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Tidewater Inc – ‘10-KT’ for 12/31/17 – ‘EX-101.LAB’

On:  Thursday, 3/15/18, at 2:41pm ET   ·   For:  12/31/17   ·   Accession #:  1564590-18-5788   ·   File #:  1-06311

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  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 3/15/18  Tidewater Inc                     10-KT      12/31/17  177:43M                                    ActiveDisclosure/FA

Annual-Transition Report   —   Form 10-K   —   Rule 13a-10 / 15d-10
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-KT       Annual-Transition Report                            HTML   2.93M 
 2: EX-10.11    Material Contract                                   HTML     49K 
 3: EX-10.31    Material Contract                                   HTML    288K 
 4: EX-10.32    Material Contract                                   HTML    168K 
 5: EX-10.34    Material Contract                                   HTML     75K 
 6: EX-10.35    Material Contract                                   HTML     82K 
 7: EX-10.36    Material Contract                                   HTML     65K 
 8: EX-21       Subsidiaries List                                   HTML     72K 
 9: EX-23       Consent of Experts or Counsel                       HTML     47K 
10: EX-31.1     Certification -- §302 - SOA'02                      HTML     55K 
11: EX-31.2     Certification -- §302 - SOA'02                      HTML     55K 
12: EX-32.1     Certification -- §906 - SOA'02                      HTML     52K 
19: R1          Document and Entity Information                     HTML     77K 
20: R2          Consolidated Balance Sheets                         HTML    151K 
21: R3          Consolidated Balance Sheets (Parenthetical)         HTML     60K 
22: R4          Consolidated Statements of Earnings (Loss)          HTML    141K 
23: R5          Consolidated Statements of Comprehensive Loss       HTML     70K 
24: R6          Consolidated Statements of Comprehensive Loss       HTML     62K 
                (Parenthetical)                                                  
25: R7          Consolidated Statements of Equity                   HTML     80K 
26: R8          Consolidated Statements of Cash Flows               HTML    170K 
27: R9          Nature of Operations and Summary of Significant     HTML    243K 
                Accounting Policies                                              
28: R10         Chapter 11 Proceedings and Emergence                HTML     63K 
29: R11         Fresh-Start Accounting                              HTML    582K 
30: R12         Reorganization Items                                HTML     84K 
31: R13         Investment in Unconsolidated Companies              HTML     81K 
32: R14         Income Taxes                                        HTML    469K 
33: R15         Indebtedness                                        HTML    398K 
34: R16         Employee Retirement Plans                           HTML   1.45M 
35: R17         Other Current Assets, Other Assets, Accrued         HTML    215K 
                Expenses, Other Current Liabilities and Other                    
                Liabilities and Deferred Credits                                 
36: R18         Stock-Based Compensation and Incentive Plans        HTML    745K 
37: R19         Stockholders' Equity                                HTML    288K 
38: R20         Earnings Per Share                                  HTML    122K 
39: R21         Sale/Leaseback Arrangements                         HTML     54K 
40: R22         Commitments and Contingencies                       HTML     93K 
41: R23         Fair Value Measurements and Disclosures             HTML    104K 
42: R24         Gain on Disposition of Assets, Net                  HTML     86K 
43: R25         Segment Information, Geographical Data and Major    HTML    625K 
                Customers                                                        
44: R26         Quarterly Financial Data                            HTML    264K 
45: R27         Asset Impairments                                   HTML    102K 
46: R28         Transition Period Comparative Data                  HTML    121K 
47: R29         Subsequent Events                                   HTML     58K 
48: R30         Valuation and Qualifying Accounts                   HTML    119K 
49: R31         Nature of Operations and Summary of Significant     HTML    310K 
                Accounting Policies (Policies)                                   
50: R32         Nature of Operations and Summary of Significant     HTML    182K 
                Accounting Policies (Tables)                                     
51: R33         Fresh-Start Accounting (Tables)                     HTML    578K 
52: R34         Reorganization Items (Tables)                       HTML     83K 
53: R35         Investment in Unconsolidated Companies (Tables)     HTML     79K 
54: R36         Income Taxes (Tables)                               HTML    464K 
55: R37         Indebtedness (Tables)                               HTML    383K 
56: R38         Employee Retirement Plans (Tables)                  HTML   1.46M 
57: R39         Other Current Assets, Other Assets, Accrued         HTML    220K 
                Expenses, Other Current Liabilities and Other                    
                Liabilities and Deferred Credits (Tables)                        
58: R40         Stock-Based Compensation and Incentive Plans        HTML    749K 
                (Tables)                                                         
59: R41         Stockholders' Equity (Tables)                       HTML    295K 
60: R42         Earnings Per Share (Tables)                         HTML    122K 
61: R43         Fair Value Measurements and Disclosures (Tables)    HTML     96K 
62: R44         Gain on Disposition of Assets, Net (Tables)         HTML     81K 
63: R45         Segment Information, Geographical Data and Major    HTML    627K 
                Customers (Tables)                                               
64: R46         Quarterly Financial Data (Tables)                   HTML    263K 
65: R47         Asset Impairments (Tables)                          HTML     93K 
66: R48         Transition Period Comparative Data (Tables)         HTML    120K 
67: R49         Nature of Operations and Summary of Significant     HTML     71K 
                Accounting Policies - Additional Information                     
                (Detail)                                                         
68: R50         Summaries of Net Properties and Equipment (Detail)  HTML     84K 
69: R51         Summaries of Net Properties and Equipment           HTML     52K 
                (Parenthetical) (Detail)                                         
70: R52         Schedule of Accrued Property and Liability Losses   HTML     53K 
                (Detail)                                                         
71: R53         Chapter 11 Proceedings and Emergence - Additional   HTML    101K 
                Information (Detail)                                             
72: R54         Fresh-Start Accounting - Additional Information     HTML     64K 
                (Detail)                                                         
73: R55         Reconciliation of Enterprise Value to Estimated     HTML     63K 
                Fair Value of Successor's Common Stock (Detail)                  
74: R56         Reconciliation of Enterprise Value to its           HTML     60K 
                Reorganization Value (Detail)                                    
75: R57         Summary of Consolidated Balance Sheet (Detail)      HTML    270K 
76: R58         Summary of Consolidated Balance Sheet               HTML    247K 
                (Parenthetical) (Detail)                                         
77: R59         Summary of Components Included in Reorganization    HTML     61K 
                Items (Detail)                                                   
78: R60         Investment in Unconsolidated Companies -            HTML     63K 
                Additional Information (Detail)                                  
79: R61         Investment in Unconsolidated Companies (Detail)     HTML     62K 
80: R62         Schedule of Earning Before Income Taxes Derived     HTML     58K 
                from United States and Non-U.S Operation (Detail)                
81: R63         Schedule of Income Tax Expense (Benefit) (Detail)   HTML     86K 
82: R64         Income Taxes - Additional Information (Detail)      HTML    101K 
83: R65         Schedule of Tax Rate Applicable to Pre-Tax          HTML     87K 
                Earning, U.S. Federal Statutory Rate (Detail)                    
84: R66         Schedule of Effective Tax Rate Applicable to        HTML     53K 
                Pre-Tax Earnings (Detail)                                        
85: R67         Schedule of Deferred Tax Assets and Deferred Tax    HTML     93K 
                Liabilities (Detail)                                             
86: R68         Schedule of Tax Credit Carry-Forwards (Detail)      HTML     50K 
87: R69         Schedule of Uncertain Tax Positions and Income Tax  HTML     54K 
                Payable (Detail)                                                 
88: R70         Schedule of Unrecognized Tax Benefits Which Would   HTML     52K 
                Lower Effective Tax Rate if Realized (Detail)                    
89: R71         Schedule of Reconciliation of Unrecognized Tax      HTML     63K 
                Benefits (Detail)                                                
90: R72         Summary Debt Outstanding Based On Stated            HTML    129K 
                Maturities (Detail)                                              
91: R73         Summary Debt Outstanding Based On Stated            HTML    106K 
                Maturities (Parenthetical) (Detail)                              
92: R74         Indebtedness - Additional Information (Detail)      HTML     89K 
93: R75         Indebtedness - Senior Debt Notes - Additional       HTML    138K 
                Information (Detail)                                             
94: R76         Schedule of Aggregate Amount of Senior Unsecured    HTML     79K 
                Notes Outstanding (Detail)                                       
95: R77         Summary of Norwegian Kroner (NOK) Denominated       HTML     65K 
                Borrowings Outstanding (Detail)                                  
96: R78         Summary of Norwegian Kroner (NOK) Denominated       HTML     57K 
                Borrowings Outstanding (Parenthetical) (Detail)                  
97: R79         Indebtedness - Bank Loan Agreement - Additional     HTML     73K 
                Information (Detail)                                             
98: R80         Debt Costs (Detail)                                 HTML     57K 
99: R81         Employee Retirement Plans - Additional Information  HTML    164K 
                (Detail)                                                         
100: R82         Schedule of Carrying Value of Trust Assets and      HTML     55K  
                Obligations Under Supplemental Plan (Detail)                     
101: R83         Schedule of Unrealized (Loss) Gains in Carrying     HTML     53K  
                Value of Trust Assets (Detail)                                   
102: R84         Summary of Minimum And Maximum Rate of Return of    HTML     62K  
                Plan Assets (Detail)                                             
103: R85         Schedule of Minimum and Maximum Market Value of     HTML     63K  
                Plan Assets (Detail)                                             
104: R86         Schedule of Asset Allocation (Detail)               HTML     76K  
105: R87         Schedule of Fair Value Assets and Liabilities       HTML    187K  
                Measured on Recurring Basis (Detail)                             
106: R88         Change in Plan Assets and Obligations (Detail)      HTML    152K  
107: R89         Schedule of Projected and Accumulated Benefit       HTML     54K  
                Obligation (Detail)                                              
108: R90         Schedule of Accumulated Benefit Obligation in       HTML     57K  
                Excess of Plan Assets (Detail)                                   
109: R91         Schedule of Net Periodic Benefit Cost (Detail)      HTML     73K  
110: R92         Schedule of Net Periodic Benefit Cost for           HTML     64K  
                Postretirement Health Care and Life Insurance Plan               
                (Detail)                                                         
111: R93         Schedule of Other Changes in Plan Assets and        HTML     79K  
                Benefit Obligation Recognized (Detail)                           
112: R94         Schedule of Amounts Recognized in Accumulated       HTML     59K  
                Other Comprehensive Income (Detail)                              
113: R95         Schedule of Expected Amounts of Net Periodic        HTML     53K  
                Benefit Costs (Detail)                                           
114: R96         Schedule of Assumptions, Net Benefit Obligation     HTML     59K  
                (Detail)                                                         
115: R97         Schedule of Assumptions, Net Periodic Benefit       HTML     62K  
                Costs (Detail)                                                   
116: R98         Schedule of Expected Benefit Payments (Detail)      HTML     67K  
117: R99         Assumed Health Care Cost Trend Rates (Detail)       HTML     58K  
118: R100        One-Percentage Rate Change in Assumed Health Care   HTML     57K  
                Cost Trend Rates and Its Effects on Accumulated                  
                Postretirement Benefit Obligation (Detail)                       
119: R101        Number of Tidewater Common Stock Shares, Series A   HTML     61K  
                Warrants and Series B Warrants Held by Plan                      
                (Detail)                                                         
120: R102        Amounts Charged to Expense Related to Defined       HTML     55K  
                Contribution Plans (Detail)                                      
121: R103        Amounts Changed to Expense Related to Continue      HTML     53K  
                Plans (Detail)                                                   
122: R104        Schedule of Other Current Assets (Detail)           HTML     64K  
123: R105        Schedule of Other Current Assets (Parenthetical)    HTML     55K  
                (Detail)                                                         
124: R106        Schedule of Other Assets (Detail)                   HTML     68K  
125: R107        Schedule of Accrued Expenses (Detail)               HTML     69K  
126: R108        Schedule of Accrued Expenses (Parenthetical)        HTML     65K  
                (Detail)                                                         
127: R109        Schedule of Other Current Liabilities (Detail)      HTML     63K  
128: R110        Schedule of Other Liabilities and Deferred Credits  HTML     63K  
                (Detail)                                                         
129: R111        Schedule of Common Stock Shares Reserved for        HTML     55K  
                Issuance and Shares Available for Grant (Detail)                 
130: R112        Stock-Based Compensation and Incentive Plans -      HTML    143K  
                Additional Information (Detail)                                  
131: R113        Fair Value and Assumptions Used For Stock Options   HTML     60K  
                Issued (Detail)                                                  
132: R114        Summary of Stock Option Activity (Detail)           HTML     62K  
133: R115        Additional Information Regarding Stock Options      HTML     58K  
                (Detail)                                                         
134: R116        Schedule of Stock Option Compensation Expense       HTML     56K  
                (Detail)                                                         
135: R117        Summary of Restricted Stock Activity (Detail)       HTML     83K  
136: R118        Schedule of Restricted Stock Unit Compensation      HTML     58K  
                Expense And Grant Date Fair Value (Detail)                       
137: R119        Summary of Phantom Stock Activity (Detail)          HTML    105K  
138: R120        Summary of Phantom Stock Activity (Parenthetical)   HTML     58K  
                (Detail)                                                         
139: R121        Schedule of Phantom Stock Compensation Expense And  HTML     58K  
                Grant Date Fair Value (Detail)                                   
140: R122        Summary of Cash-Based Performance Plan Unit         HTML     64K  
                Activity (Detail)                                                
141: R123        Schedule of Restricted Stock Compensation Expense   HTML     52K  
                and Grant Date Fair Value (Detail)                               
142: R124        Summary of Deferred Stock Unit Activity (Detail)    HTML     60K  
143: R125        Schedule of Deferred Stock Unit Compensation        HTML     52K  
                Expense (Detail)                                                 
144: R126        Schedule of Deferred Cash Award Expense (Detail)    HTML     53K  
145: R127        Schedule of Authorized And Issued Common Stock And  HTML     62K  
                Preferred Stock (Detail)                                         
146: R128        Stockholders' Equity - Additional Information       HTML     60K  
                (Detail)                                                         
147: R129        Changes in Accumulated Other Comprehensive Income   HTML     90K  
                (Loss) by Component, Net of Tax (Detail)                         
148: R130        Reclassifications from Accumulated Other            HTML     84K  
                Comprehensive Income (Loss) to Consolidated                      
                Statement of Income (Detail)                                     
149: R131        Components of Basic and Diluted Earnings Per Share  HTML     88K  
                (Detail)                                                         
150: R132        Components of Basic and Diluted Earnings Per Share  HTML     53K  
                (Parenthetical) (Detail)                                         
151: R133        Sale/ Leaseback Arrangements - Additional           HTML     72K  
                Information (Detail)                                             
152: R134        Commitments and Contingencies - Additional          HTML     81K  
                Information (Detail)                                             
153: R135        Commitments and Contingencies (Sonatide Joint       HTML    103K  
                Venture) - Additional Information (Detail)                       
154: R136        Commitments and Contingencies (Brazilian Customs)   HTML     60K  
                - Additional Information (Detail)                                
155: R137        Commitment and Contingencies (Repairs to U.S.       HTML     49K  
                Flagged Vessels Operating Abroad) - Additional                   
                Information (Detail)                                             
156: R138        Commitment and Contingencies (Arbitral Award for    HTML     62K  
                the Taking of the Company's Venezuelan Operations)               
                - Additional Information (Detail)                                
157: R139        Fair Value Measurements and Disclosures -           HTML     60K  
                Additional Information (Detail)                                  
158: R140        Schedule of Fair Value Other Financial Instruments  HTML     61K  
                Measured (Detail)                                                
159: R141        Schedule of Gain on Disposition of Assets (Detail)  HTML     58K  
160: R142        Gain on Disposition of Assets, Net - Additional     HTML     75K  
                Information (Detail)                                             
161: R143        Segment Information, Geographical Data and Major    HTML     49K  
                Customers - Additional Information (Detail)                      
162: R144        Segment Information, Geographical Data and Major    HTML    251K  
                Customers (Detail)                                               
163: R145        Segment Information, Geographical Data and Major    HTML     66K  
                Customers (Parenthetical) (Detail)                               
164: R146        Schedule of Segment Reporting Information, Revenue  HTML    117K  
                by Vessel Class (Detail)                                         
165: R147        Disclosure of Accounted Total Revenues Percentage   HTML     64K  
                (Detail)                                                         
166: R148        Selected Financial Information (Detail)             HTML     81K  
167: R149        Selected Financial Information (Parenthetical)      HTML     67K  
                (Detail)                                                         
168: R150        Asset Impairments - Additional Information          HTML     79K  
                (Detail)                                                         
169: R151        Summary of Vessels and ROVs Impaired, Amount of     HTML     65K  
                Impairment Incurred and Combined Fair Value of                   
                Assets after Impairment Charges (Detail)                         
170: R152        Summary of Vessels and ROVs Impaired, Amount of     HTML     63K  
                Impairment Incurred and Combined Fair Value of                   
                Assets after Impairment Charges (Parenthetical)                  
                (Detail)                                                         
171: R153        Schedule of Financial Information (Detail)          HTML    102K  
172: R154        Subsequent Events - Additional Information          HTML     95K  
                (Detail)                                                         
173: R155        Valuation and Qualifying Accounts (Detail)          HTML     60K  
174: R156        Valuation and Qualifying Accounts (Parenthetical)   HTML     52K  
                (Detail)                                                         
176: XML         IDEA XML File -- Filing Summary                      XML    335K  
175: EXCEL       IDEA Workbook of Financial Reports                  XLSX    236K  
13: EX-101.INS  XBRL Instance -- tdw-20171231                        XML  13.86M 
15: EX-101.CAL  XBRL Calculations -- tdw-20171231_cal                XML    478K 
16: EX-101.DEF  XBRL Definitions -- tdw-20171231_def                 XML   2.43M 
17: EX-101.LAB  XBRL Labels -- tdw-20171231_lab                      XML   3.01M 
18: EX-101.PRE  XBRL Presentations -- tdw-20171231_pre               XML   2.92M 
14: EX-101.SCH  XBRL Schema -- tdw-20171231                          XSD    555K 
177: ZIP         XBRL Zipped Folder -- 0001564590-18-005788-xbrl      Zip    581K

‘EX-101.LAB’   —   XBRL Labels — tdw-20171231_lab

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
<?xml version="1.0" standalone="yes" encoding="windows-1252"?>
<!-- DFS ActiveDisclosure(SM) XBRL Linkbase Document - http://www.dfsco.com/financial-services/ -->
<!-- Creation Date : 2018-03-15T11:10:43.3520224+00:00 -->
<!-- Version : 2.9.6605.1333 -->
<!-- Package ID : 33dc8f50ad7d4cd6984de53a679f5a19 -->
<!-- Copyright (c) 2018 Donnelley Financial, LLC. All Rights Reserved. -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple"/>
<roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple"/>
<roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple"/>
<roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple"/>
<roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple"/>
<roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple"/>
<roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple"/>
<labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey"/>
<label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity Central Index Key </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PreconfirmationDueFromAffiliateCurrent" xlink:type="locator" xlink:label="tdw_PreconfirmationDueFromAffiliateCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationDueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Preconfirmation due from affiliate current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreconfirmationDueFromAffiliateCurrent" xlink:to="tdw_PreconfirmationDueFromAffiliateCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PreconfirmationMarineOperatingSuppliesCurrent" xlink:type="locator" xlink:label="tdw_PreconfirmationMarineOperatingSuppliesCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationMarineOperatingSuppliesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Preconfirmation marine operating supplies current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreconfirmationMarineOperatingSuppliesCurrent" xlink:to="tdw_PreconfirmationMarineOperatingSuppliesCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PreconfirmationDueToAffiliateCurrent" xlink:type="locator" xlink:label="tdw_PreconfirmationDueToAffiliateCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationDueToAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Preconfirmation due to affiliate current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreconfirmationDueToAffiliateCurrent" xlink:to="tdw_PreconfirmationDueToAffiliateCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PreconfirmationAccruedPropertyAndLiabilityLossesCurrent" xlink:type="locator" xlink:label="tdw_PreconfirmationAccruedPropertyAndLiabilityLossesCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationAccruedPropertyAndLiabilityLossesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Preconfirmation accrued property and liability losses current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreconfirmationAccruedPropertyAndLiabilityLossesCurrent" xlink:to="tdw_PreconfirmationAccruedPropertyAndLiabilityLossesCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PreconfirmationAccruedPropertyAndLiabilityLosses" xlink:type="locator" xlink:label="tdw_PreconfirmationAccruedPropertyAndLiabilityLosses"/>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Preconfirmation accrued property and liability losses. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreconfirmationAccruedPropertyAndLiabilityLosses" xlink:to="tdw_PreconfirmationAccruedPropertyAndLiabilityLosses_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PreconfirmationReorganizationAdjustmentCommonStock" xlink:type="locator" xlink:label="tdw_PreconfirmationReorganizationAdjustmentCommonStock"/>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationReorganizationAdjustmentCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Preconfirmation reorganization adjustment common stock. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreconfirmationReorganizationAdjustmentCommonStock" xlink:to="tdw_PreconfirmationReorganizationAdjustmentCommonStock_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PreconfirmationReorganizationAdjustmentAdditionalPaidInCapital" xlink:type="locator" xlink:label="tdw_PreconfirmationReorganizationAdjustmentAdditionalPaidInCapital"/>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationReorganizationAdjustmentAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Preconfirmation reorganization adjustment additional paid-in capital. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreconfirmationReorganizationAdjustmentAdditionalPaidInCapital" xlink:to="tdw_PreconfirmationReorganizationAdjustmentAdditionalPaidInCapital_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationReorganizationAdjustmentCommonStock" xlink:type="locator" xlink:label="tdw_PostconfirmationReorganizationAdjustmentCommonStock"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationReorganizationAdjustmentCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation reorganization adjustment common stock. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationReorganizationAdjustmentCommonStock" xlink:to="tdw_PostconfirmationReorganizationAdjustmentCommonStock_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationReorganizationAdjustmentAdditionalPaidInCapital" xlink:type="locator" xlink:label="tdw_PostconfirmationReorganizationAdjustmentAdditionalPaidInCapital"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationReorganizationAdjustmentAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation reorganization adjustment additional paid-in capital. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationReorganizationAdjustmentAdditionalPaidInCapital" xlink:to="tdw_PostconfirmationReorganizationAdjustmentAdditionalPaidInCapital_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PreconfirmationMinorityInterest" xlink:type="locator" xlink:label="tdw_PreconfirmationMinorityInterest"/>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationMinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Preconfirmation minority interest. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreconfirmationMinorityInterest" xlink:to="tdw_PreconfirmationMinorityInterest_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PreconfirmationCommitmentsAndContingencies" xlink:type="locator" xlink:label="tdw_PreconfirmationCommitmentsAndContingencies"/>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationCommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Preconfirmation commitments and contingencies. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreconfirmationCommitmentsAndContingencies" xlink:to="tdw_PreconfirmationCommitmentsAndContingencies_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="tdw_PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Preconfirmation stockholders equity including portion attributable to noncontrolling interest. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="tdw_PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_IncomeTaxReconciliationUncertainTaxPosition" xlink:type="locator" xlink:label="tdw_IncomeTaxReconciliationUncertainTaxPosition"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationUncertainTaxPosition_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Income tax reconciliatio uncertain tax position. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncomeTaxReconciliationUncertainTaxPosition" xlink:to="tdw_IncomeTaxReconciliationUncertainTaxPosition_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_IncomeTaxReconciliationReorganization" xlink:type="locator" xlink:label="tdw_IncomeTaxReconciliationReorganization"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationReorganization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Income tax reconciliation reorganization. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncomeTaxReconciliationReorganization" xlink:to="tdw_IncomeTaxReconciliationReorganization_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_IncomeTaxReconciliationTransitionTax" xlink:type="locator" xlink:label="tdw_IncomeTaxReconciliationTransitionTax"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationTransitionTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Income tax reconciliation transition tax. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncomeTaxReconciliationTransitionTax" xlink:to="tdw_IncomeTaxReconciliationTransitionTax_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_IncomeTaxReconciliationDeductionsAmortizationOfDeferralsAssociatedWithIntercompanySalesToForeignTaxJurisdictions" xlink:type="locator" xlink:label="tdw_IncomeTaxReconciliationDeductionsAmortizationOfDeferralsAssociatedWithIntercompanySalesToForeignTaxJurisdictions"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationDeductionsAmortizationOfDeferralsAssociatedWithIntercompanySalesToForeignTaxJurisdictions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Income tax reconciliation deductions amortization of deferrals associated with intercompany sales to foreign tax jurisdictions. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncomeTaxReconciliationDeductionsAmortizationOfDeferralsAssociatedWithIntercompanySalesToForeignTaxJurisdictions" xlink:to="tdw_IncomeTaxReconciliationDeductionsAmortizationOfDeferralsAssociatedWithIntercompanySalesToForeignTaxJurisdictions_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_IncomeTaxReconciliationIncreaseDecreaseInForeignTaxes" xlink:type="locator" xlink:label="tdw_IncomeTaxReconciliationIncreaseDecreaseInForeignTaxes"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationIncreaseDecreaseInForeignTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Income tax reconciliation increase decrease in foreign taxes. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncomeTaxReconciliationIncreaseDecreaseInForeignTaxes" xlink:to="tdw_IncomeTaxReconciliationIncreaseDecreaseInForeignTaxes_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_IncomeTaxReconciliationRemeasurementOfDeferredTaxes" xlink:type="locator" xlink:label="tdw_IncomeTaxReconciliationRemeasurementOfDeferredTaxes"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationRemeasurementOfDeferredTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Income tax reconciliation remeasurement of deferred taxes. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncomeTaxReconciliationRemeasurementOfDeferredTaxes" xlink:to="tdw_IncomeTaxReconciliationRemeasurementOfDeferredTaxes_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanAccruedIncome" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanAccruedIncome"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanAccruedIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Benefit Plan, Accrued Income </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanAccruedIncome" xlink:to="tdw_DefinedBenefitPlanAccruedIncome_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanOtherPendingTransactionsIncreaseDecrease" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanOtherPendingTransactionsIncreaseDecrease"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanOtherPendingTransactionsIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined benefit plan other pending transactions increase decrease. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanOtherPendingTransactionsIncreaseDecrease" xlink:to="tdw_DefinedBenefitPlanOtherPendingTransactionsIncreaseDecrease_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanPayrollTaxOfNetPensionCosts" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanPayrollTaxOfNetPensionCosts"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanPayrollTaxOfNetPensionCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined benefit plan payroll tax of net pension costs. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanPayrollTaxOfNetPensionCosts" xlink:to="tdw_DefinedBenefitPlanPayrollTaxOfNetPensionCosts_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansFreshStartAccountingFairValueAdjustment" xlink:type="locator" xlink:label="tdw_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansFreshStartAccountingFairValueAdjustment"/>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansFreshStartAccountingFairValueAdjustment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Other comprehensive income loss pension and other postretirement benefit plans fresh-start accounting fair value adjustment. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansFreshStartAccountingFairValueAdjustment" xlink:to="tdw_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansFreshStartAccountingFairValueAdjustment_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_CorporateExpenses" xlink:type="locator" xlink:label="tdw_CorporateExpenses"/>
<label xml:lang="en-US" xlink:label="tdw_CorporateExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Corporate expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CorporateExpenses" xlink:to="tdw_CorporateExpenses_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DocumentAndEntityInformationAbstract" xlink:type="locator" xlink:label="tdw_DocumentAndEntityInformationAbstract"/>
<label xml:lang="en-US" xlink:label="tdw_DocumentAndEntityInformationAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Document And Entity Information [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DocumentAndEntityInformationAbstract" xlink:to="tdw_DocumentAndEntityInformationAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DocumentAndEntityInformationAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Document And Entity Information [Abstract] </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType"/>
<label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Document Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl"/>
<label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Document Type </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag"/>
<label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amendment Flag </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl"/>
<label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Amendment Flag </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate"/>
<label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Document Period End Date </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl"/>
<label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Document Period End Date </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:type="locator" xlink:label="dei_DocumentFiscalYearFocus"/>
<label xml:lang="en-US" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Document Fiscal Year Focus </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalYearFocus" xlink:to="dei_DocumentFiscalYearFocus_lbl"/>
<label xml:lang="en-US" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Document Fiscal Year Focus </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:type="locator" xlink:label="dei_DocumentFiscalPeriodFocus"/>
<label xml:lang="en-US" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Document Fiscal Period Focus </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalPeriodFocus" xlink:to="dei_DocumentFiscalPeriodFocus_lbl"/>
<label xml:lang="en-US" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Document Fiscal Period Focus </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol"/>
<label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Trading Symbol </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl"/>
<label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Trading Symbol </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName"/>
<label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity Registrant Name </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl"/>
<label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Registrant Name </label>
<label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Central Index Key </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:type="locator" xlink:label="dei_EntityWellKnownSeasonedIssuer"/>
<label xml:lang="en-US" xlink:label="dei_EntityWellKnownSeasonedIssuer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity Well-known Seasoned Issuer </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityWellKnownSeasonedIssuer" xlink:to="dei_EntityWellKnownSeasonedIssuer_lbl"/>
<label xml:lang="en-US" xlink:label="dei_EntityWellKnownSeasonedIssuer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Well Known Seasoned Issuer </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:type="locator" xlink:label="dei_EntityCurrentReportingStatus"/>
<label xml:lang="en-US" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity Current Reporting Status </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCurrentReportingStatus" xlink:to="dei_EntityCurrentReportingStatus_lbl"/>
<label xml:lang="en-US" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Current Reporting Status </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:type="locator" xlink:label="dei_CurrentFiscalYearEndDate"/>
<label xml:lang="en-US" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current Fiscal Year End Date </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl"/>
<label xml:lang="en-US" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Current Fiscal Year End Date </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityVoluntaryFilers" xlink:type="locator" xlink:label="dei_EntityVoluntaryFilers"/>
<label xml:lang="en-US" xlink:label="dei_EntityVoluntaryFilers_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity Voluntary Filers </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityVoluntaryFilers" xlink:to="dei_EntityVoluntaryFilers_lbl"/>
<label xml:lang="en-US" xlink:label="dei_EntityVoluntaryFilers_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Voluntary Filers </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityFilerCategory" xlink:type="locator" xlink:label="dei_EntityFilerCategory"/>
<label xml:lang="en-US" xlink:label="dei_EntityFilerCategory_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity Filer Category </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFilerCategory" xlink:to="dei_EntityFilerCategory_lbl"/>
<label xml:lang="en-US" xlink:label="dei_EntityFilerCategory_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Filer Category </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:type="locator" xlink:label="dei_EntityCommonStockSharesOutstanding"/>
<label xml:lang="en-US" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity Common Stock, Shares Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCommonStockSharesOutstanding" xlink:to="dei_EntityCommonStockSharesOutstanding_lbl"/>
<label xml:lang="en-US" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Common Stock Shares Outstanding </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityPublicFloat" xlink:type="locator" xlink:label="dei_EntityPublicFloat"/>
<label xml:lang="en-US" xlink:label="dei_EntityPublicFloat_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity Public Float </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityPublicFloat" xlink:to="dei_EntityPublicFloat_lbl"/>
<label xml:lang="en-US" xlink:label="dei_EntityPublicFloat_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Public Float </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DeferredDrydockingAndSurveyCostsNoncurrent" xlink:type="locator" xlink:label="tdw_DeferredDrydockingAndSurveyCostsNoncurrent"/>
<label xml:lang="en-US" xlink:label="tdw_DeferredDrydockingAndSurveyCostsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Deferred drydocking and survey costs, noncurrent. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DeferredDrydockingAndSurveyCostsNoncurrent" xlink:to="tdw_DeferredDrydockingAndSurveyCostsNoncurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_LiabilityForClaimsAndClaimsExpenseCurrent" xlink:type="locator" xlink:label="tdw_LiabilityForClaimsAndClaimsExpenseCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_LiabilityForClaimsAndClaimsExpenseCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Liability for claims and claims expense current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_LiabilityForClaimsAndClaimsExpenseCurrent" xlink:to="tdw_LiabilityForClaimsAndClaimsExpenseCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_LiabilityForClaimsAndClaimsExpenseNoncurrent" xlink:type="locator" xlink:label="tdw_LiabilityForClaimsAndClaimsExpenseNoncurrent"/>
<label xml:lang="en-US" xlink:label="tdw_LiabilityForClaimsAndClaimsExpenseNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Liability for claims and claims expense noncurrent. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_LiabilityForClaimsAndClaimsExpenseNoncurrent" xlink:to="tdw_LiabilityForClaimsAndClaimsExpenseNoncurrent_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfFinancialPositionAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Statement Of Financial Position [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementOfFinancialPositionAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementTable" xlink:type="locator" xlink:label="us-gaap_StatementTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Statement [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Statement [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:type="locator" xlink:label="us-gaap_StatementScenarioAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementScenarioAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Scenario </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementScenarioAxis" xlink:to="us-gaap_StatementScenarioAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementScenarioAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Statement Scenario [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:type="locator" xlink:label="us-gaap_ScenarioUnspecifiedDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScenarioUnspecifiedDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Scenario, Unspecified </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScenarioUnspecifiedDomain" xlink:to="us-gaap_ScenarioUnspecifiedDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScenarioUnspecifiedDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Scenario Unspecified [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PredecessorMember" xlink:type="locator" xlink:label="us-gaap_PredecessorMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_PredecessorMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Predecessor </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PredecessorMember" xlink:to="us-gaap_PredecessorMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PredecessorMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Predecessor [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementLineItems" xlink:type="locator" xlink:label="us-gaap_StatementLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Statement [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Statement [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsAbstract" xlink:type="locator" xlink:label="us-gaap_AssetsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> ASSETS </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Assets [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:type="locator" xlink:label="us-gaap_AssetsCurrentAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current assets: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrentAbstract" xlink:to="us-gaap_AssetsCurrentAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetsCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Assets Current [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash and cash equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cash And Cash Equivalents At Carrying Value </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedCashCurrent" xlink:type="locator" xlink:label="us-gaap_RestrictedCashCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestrictedCashCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restricted cash </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashCurrent" xlink:to="us-gaap_RestrictedCashCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestrictedCashCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Restricted Cash Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:type="locator" xlink:label="us-gaap_ReceivablesNetCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReceivablesNetCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Trade and other receivables, less allowance for doubtful accounts of $1,800 and $16,165 as of December 31, 2017 and March 31, 2017, respectively </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivablesNetCurrent" xlink:to="us-gaap_ReceivablesNetCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReceivablesNetCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Receivables Net Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DueFromAffiliateCurrent" xlink:type="locator" xlink:label="us-gaap_DueFromAffiliateCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_DueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Due from affiliate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueFromAffiliateCurrent" xlink:to="us-gaap_DueFromAffiliateCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Due From Affiliate Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Supplies" xlink:type="locator" xlink:label="us-gaap_Supplies"/>
<label xml:lang="en-US" xlink:label="us-gaap_Supplies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Marine operating supplies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Supplies" xlink:to="us-gaap_Supplies_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_Supplies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Supplies </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsCurrent" xlink:to="us-gaap_OtherAssetsCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Assets Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsCurrent" xlink:type="locator" xlink:label="us-gaap_AssetsCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Assets Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:type="locator" xlink:label="us-gaap_EquityMethodInvestments"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investments in, at equity, and advances to unconsolidated companies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestments" xlink:to="us-gaap_EquityMethodInvestments_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Method Investments </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net properties and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment Net </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredDrydockingAndSurveyCostsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred drydocking and survey costs </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredDrydockingAndSurveyCostsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Drydocking And Survey Costs Noncurrent </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Assets Noncurrent </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Assets" xlink:type="locator" xlink:label="us-gaap_Assets"/>
<label xml:lang="en-US" xlink:label="us-gaap_Assets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_Assets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> LIABILITIES AND EQUITY </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities And Stockholders Equity [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:type="locator" xlink:label="us-gaap_LiabilitiesCurrentAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current liabilities: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities Current [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsPayableCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accounts payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccountsPayableCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccountsPayableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accounts Payable Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_AccruedLiabilitiesCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedLiabilitiesCurrent" xlink:to="us-gaap_AccruedLiabilitiesCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accrued Liabilities Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DueToAffiliateCurrent" xlink:type="locator" xlink:label="us-gaap_DueToAffiliateCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_DueToAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Due to affiliate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueToAffiliateCurrent" xlink:to="us-gaap_DueToAffiliateCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DueToAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Due To Affiliate Current </label>
<label xml:lang="en-US" xlink:label="tdw_LiabilityForClaimsAndClaimsExpenseCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued property and liability losses </label>
<label xml:lang="en-US" xlink:label="tdw_LiabilityForClaimsAndClaimsExpenseCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Liability For Claims And Claims Expense Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:type="locator" xlink:label="us-gaap_LongTermDebtCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current portion of long-term debt </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtCurrent" xlink:to="us-gaap_LongTermDebtCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Long Term Debt Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesCurrent" xlink:to="us-gaap_OtherLiabilitiesCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Liabilities Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_LiabilitiesCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrent" xlink:to="us-gaap_LiabilitiesCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:type="locator" xlink:label="us-gaap_LongTermDebtNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Long-term debt </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtNoncurrent" xlink:to="us-gaap_LongTermDebtNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Long Term Debt Noncurrent </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred income taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:to="us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Liabilities Noncurrent </label>
<label xml:lang="en-US" xlink:label="tdw_LiabilityForClaimsAndClaimsExpenseNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued property and liability losses </label>
<label xml:lang="en-US" xlink:label="tdw_LiabilityForClaimsAndClaimsExpenseNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Liability For Claims And Claims Expense Noncurrent </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other liabilities and deferred credits </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherLiabilitiesNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Liabilities Noncurrent </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:type="locator" xlink:label="us-gaap_CommitmentsAndContingencies"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Commitments and Contingencies (Note (14)) </label>
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<label xml:lang="en-US" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Commitments And Contingencies </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityAbstract" xlink:to="us-gaap_StockholdersEquityAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stockholders Equity [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockValue" xlink:type="locator" xlink:label="us-gaap_CommonStockValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock, value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock Value </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:type="locator" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock"/>
<label xml:lang="en-US" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional paid-in capital </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalCommonStock" xlink:to="us-gaap_AdditionalPaidInCapitalCommonStock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Additional Paid In Capital Common Stock </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:type="locator" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retained (deficit) earnings </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Retained Earnings Accumulated Deficit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accumulated other comprehensive loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accumulated Other Comprehensive Income Loss Net Of Tax </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquity" xlink:type="locator" xlink:label="us-gaap_StockholdersEquity"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total stockholders’ equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stockholders Equity </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinorityInterest" xlink:type="locator" xlink:label="us-gaap_MinorityInterest"/>
<label xml:lang="en-US" xlink:label="us-gaap_MinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Noncontrolling interests </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterest" xlink:to="us-gaap_MinorityInterest_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_MinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Minority Interest </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stockholders Equity Including Portion Attributable To Noncontrolling Interest </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total liabilities and equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities And Stockholders Equity </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:type="locator" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Allowance for doubtful accounts </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Allowance For Doubtful Accounts Receivable Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:type="locator" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Common stock, par value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock Par Or Stated Value Per Share </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:type="locator" xlink:label="us-gaap_CommonStockSharesAuthorized"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Common stock, shares authorized </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock Shares Authorized </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:type="locator" xlink:label="us-gaap_CommonStockSharesIssued"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Common stock, shares issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock Shares Issued </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:type="locator" xlink:label="us-gaap_CommonStockSharesOutstanding"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock, shares outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock Shares Outstanding </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeStatementAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Statement [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RevenuesAbstract" xlink:type="locator" xlink:label="us-gaap_RevenuesAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_RevenuesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Revenues: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenuesAbstract" xlink:to="us-gaap_RevenuesAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RevenuesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Revenues [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SalesRevenueServicesNet" xlink:type="locator" xlink:label="us-gaap_SalesRevenueServicesNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_SalesRevenueServicesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Vessel revenues </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SalesRevenueServicesNet" xlink:to="us-gaap_SalesRevenueServicesNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SalesRevenueServicesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sales Revenue Services Net </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherSalesRevenueNet" xlink:type="locator" xlink:label="us-gaap_OtherSalesRevenueNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherSalesRevenueNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other operating revenues </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherSalesRevenueNet" xlink:to="us-gaap_OtherSalesRevenueNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherSalesRevenueNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Sales Revenue Net </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues"/>
<label xml:lang="en-US" xlink:label="us-gaap_Revenues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total revenues </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_Revenues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Revenues </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostsAndExpensesAbstract" xlink:type="locator" xlink:label="us-gaap_CostsAndExpensesAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_CostsAndExpensesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Costs and expenses: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="us-gaap_CostsAndExpensesAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CostsAndExpensesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Costs And Expenses [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DirectOperatingCosts" xlink:type="locator" xlink:label="us-gaap_DirectOperatingCosts"/>
<label xml:lang="en-US" xlink:label="us-gaap_DirectOperatingCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Vessel operating costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DirectOperatingCosts" xlink:to="us-gaap_DirectOperatingCosts_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DirectOperatingCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Direct Operating Costs </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherCostOfOperatingRevenue" xlink:type="locator" xlink:label="us-gaap_OtherCostOfOperatingRevenue"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherCostOfOperatingRevenue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Costs of other operating revenues </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherCostOfOperatingRevenue" xlink:to="us-gaap_OtherCostOfOperatingRevenue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherCostOfOperatingRevenue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Cost Of Operating Revenue </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:type="locator" xlink:label="us-gaap_GeneralAndAdministrativeExpense"/>
<label xml:lang="en-US" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> General and administrative </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralAndAdministrativeExpense" xlink:to="us-gaap_GeneralAndAdministrativeExpense_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> General And Administrative Expense </label>
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<label xml:lang="en-US" xlink:label="us-gaap_OtherCostAndExpenseOperating_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Vessel operating leases </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherCostAndExpenseOperating" xlink:to="us-gaap_OtherCostAndExpenseOperating_lbl"/>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:type="locator" xlink:label="us-gaap_DepreciationAndAmortization"/>
<label xml:lang="en-US" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Depreciation and amortization </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationAndAmortization" xlink:to="us-gaap_DepreciationAndAmortization_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Depreciation And Amortization </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GainLossOnDispositionOfAssets" xlink:type="locator" xlink:label="us-gaap_GainLossOnDispositionOfAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Gain on asset dispositions, net </label>
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<label xml:lang="en-US" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Gain Loss On Disposition Of Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetImpairmentCharges" xlink:type="locator" xlink:label="us-gaap_AssetImpairmentCharges"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Asset impairments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetImpairmentCharges" xlink:to="us-gaap_AssetImpairmentCharges_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Asset Impairment Charges </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostsAndExpenses" xlink:type="locator" xlink:label="us-gaap_CostsAndExpenses"/>
<label xml:lang="en-US" xlink:label="us-gaap_CostsAndExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total costs and expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostsAndExpenses" xlink:to="us-gaap_CostsAndExpenses_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CostsAndExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Costs And Expenses </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:type="locator" xlink:label="us-gaap_OperatingIncomeLoss"/>
<label xml:lang="en-US" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Operating loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Operating Income Loss </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:type="locator" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other income (expenses): </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpenseAbstract" xlink:to="us-gaap_NonoperatingIncomeExpenseAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NonoperatingIncomeExpenseAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Nonoperating Income Expense [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:type="locator" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Foreign exchange loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:to="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Foreign Currency Transaction Gain Loss Before Tax </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity in net earnings of unconsolidated companies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromEquityMethodInvestments" xlink:to="us-gaap_IncomeLossFromEquityMethodInvestments_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Loss From Equity Method Investments </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InvestmentIncomeNonoperating" xlink:type="locator" xlink:label="us-gaap_InvestmentIncomeNonoperating"/>
<label xml:lang="en-US" xlink:label="us-gaap_InvestmentIncomeNonoperating_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Interest income and other, net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentIncomeNonoperating" xlink:to="us-gaap_InvestmentIncomeNonoperating_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_InvestmentIncomeNonoperating_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Investment Income Nonoperating </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReorganizationItems" xlink:type="locator" xlink:label="us-gaap_ReorganizationItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReorganizationItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Reorganization items </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReorganizationItems" xlink:to="us-gaap_ReorganizationItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReorganizationItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reorganization Items </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestAndDebtExpense" xlink:type="locator" xlink:label="us-gaap_InterestAndDebtExpense"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestAndDebtExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Interest and other debt costs, net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestAndDebtExpense" xlink:to="us-gaap_InterestAndDebtExpense_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestAndDebtExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Interest And Debt Expense </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:type="locator" xlink:label="us-gaap_NonoperatingIncomeExpense"/>
<label xml:lang="en-US" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total other income (expenses) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonoperatingIncomeExpense" xlink:to="us-gaap_NonoperatingIncomeExpense_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NonoperatingIncomeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Nonoperating Income Expense </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Loss before income taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income tax (benefit) expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Expense Benefit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProfitLoss" xlink:type="locator" xlink:label="us-gaap_ProfitLoss"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProfitLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfitLoss" xlink:to="us-gaap_ProfitLoss_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProfitLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Profit Loss </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Less: Net income attributable to noncontrolling interests </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:to="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Net Income Loss Attributable To Noncontrolling Interest </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetIncomeLoss" xlink:type="locator" xlink:label="us-gaap_NetIncomeLoss"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net loss attributable to Tidewater Inc. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Net Income Loss </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareBasic"/>
<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Basic loss per common share </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasic" xlink:to="us-gaap_EarningsPerShareBasic_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Earnings Per Share Basic </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareDiluted"/>
<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Diluted loss per common share </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDiluted" xlink:to="us-gaap_EarningsPerShareDiluted_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Earnings Per Share Diluted </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:type="locator" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
<label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted average common shares outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Weighted Average Number Of Shares Outstanding Basic </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:type="locator" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment"/>
<label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Dilutive effect of stock options and restricted stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:to="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Weighted Average Number Diluted Shares Outstanding Adjustment </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:type="locator" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
<label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Adjusted weighted average common shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Weighted Average Number Of Diluted Shares Outstanding </label>
<loc xlink:href="tdw-20171231.xsd#tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:type="locator" xlink:label="tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease"/>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Net changes to accumulated comprehensive income during the period related to Supplemental Executive Retirement defined benefit plans, after tax. </label>
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<loc xlink:href="tdw-20171231.xsd#tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:type="locator" xlink:label="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease"/>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Net changes to accumulated comprehensive income during the period related to defined benefit pension plans, after tax. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease" xlink:to="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Statement Of Income And Comprehensive Income [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:to="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProfitLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net loss </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other comprehensive income (loss): </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unrealized gains (losses) on available for sale securities, net of tax of $0, 0 and $61, respectively </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change in loss on derivative contract, net of tax of $0, $0 and $823, respectively </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax </label>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change in supplemental executive retirement plan pension liability, net of tax of $0, $0 and ($927), respectively </label>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Supplemental Executive Retirement Plan Minimum Liability Adjustment Net Of Tax Period Increase Decrease </label>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change in pension plan minimum liability, net of tax of $0, $0 and $215, respectively </label>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentNetOfTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Pension Plan Minimum Liability Adjustment Net Of Tax Period Increase Decrease </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Change in other benefit plan minimum liability, net of tax of $0, $0 and ($2,046), respectively </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax"/>
<label xml:lang="en-US" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total comprehensive loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_ComprehensiveIncomeNetOfTax_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Comprehensive Income Net Of Tax </label>
<loc xlink:href="tdw-20171231.xsd#tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease" xlink:type="locator" xlink:label="tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease"/>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Other Comprehensive Income Supplemental Executive Retirement Plan Minimum Liability Adjustment Tax Period Increase Decrease </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease" xlink:to="tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease" xlink:type="locator" xlink:label="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease"/>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Other Comprehensive Income Pension Plan Minimum Liability Adjustment Tax Period Increase Decrease </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease" xlink:to="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unrealized gains (losses) on available-for-sale securities, tax </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax" xlink:to="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change in loss on derivative contract, tax </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax </label>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change in supplemental executive retirement plan pension liability, tax </label>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomeSupplementalExecutiveRetirementPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Supplemental Executive Retirement Plan Minimum Liability Adjustment Tax Period Increase Decrease </label>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change in Pension Plan minimum liability, tax </label>
<label xml:lang="en-US" xlink:label="tdw_OtherComprehensiveIncomePensionPlanMinimumLiabilityAdjustmentTaxPeriodIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Pension Plan Minimum Liability Adjustment Tax Period Increase Decrease </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change in Other Benefit Plan minimum liability, tax </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax </label>
<loc xlink:href="tdw-20171231.xsd#tdw_StockIssuedDuringPeriodValueAmortizationCancellationOfRestrictedStock" xlink:type="locator" xlink:label="tdw_StockIssuedDuringPeriodValueAmortizationCancellationOfRestrictedStock"/>
<label xml:lang="en-US" xlink:label="tdw_StockIssuedDuringPeriodValueAmortizationCancellationOfRestrictedStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Stock issued during period value amortization cancellation of restricted stock. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_StockIssuedDuringPeriodValueAmortizationCancellationOfRestrictedStock" xlink:to="tdw_StockIssuedDuringPeriodValueAmortizationCancellationOfRestrictedStock_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_RestrictedStockExpenseCancelledAwards" xlink:type="locator" xlink:label="tdw_RestrictedStockExpenseCancelledAwards"/>
<label xml:lang="en-US" xlink:label="tdw_RestrictedStockExpenseCancelledAwards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Restricted stock expense cancelled awards. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RestrictedStockExpenseCancelledAwards" xlink:to="tdw_RestrictedStockExpenseCancelledAwards_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_StockAndWarrantsIssuedDuringPeriodValueNewIssues" xlink:type="locator" xlink:label="tdw_StockAndWarrantsIssuedDuringPeriodValueNewIssues"/>
<label xml:lang="en-US" xlink:label="tdw_StockAndWarrantsIssuedDuringPeriodValueNewIssues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Stock and warrants issued during period, value, new issues. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_StockAndWarrantsIssuedDuringPeriodValueNewIssues" xlink:to="tdw_StockAndWarrantsIssuedDuringPeriodValueNewIssues_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Statement Of Stockholders Equity [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="us-gaap_StatementOfStockholdersEquityAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementEquityComponentsAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity Components </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_StatementEquityComponentsAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Statement Equity Components [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityComponentDomain" xlink:type="locator" xlink:label="us-gaap_EquityComponentDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity Component </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_EquityComponentDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Component [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockMember" xlink:type="locator" xlink:label="us-gaap_CommonStockMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockMember" xlink:to="us-gaap_CommonStockMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:type="locator" xlink:label="us-gaap_AdditionalPaidInCapitalMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional paid- in capital </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalMember" xlink:to="us-gaap_AdditionalPaidInCapitalMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Additional Paid In Capital [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:type="locator" xlink:label="us-gaap_RetainedEarningsMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retained earnings (deficit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsMember" xlink:to="us-gaap_RetainedEarningsMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Retained Earnings [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accumulated other comprehensive loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accumulated Other Comprehensive Income [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:type="locator" xlink:label="us-gaap_NoncontrollingInterestMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Non controlling interest </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncontrollingInterestMember" xlink:to="us-gaap_NoncontrollingInterestMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Noncontrolling Interest [Member] </label>
<label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Balance </label>
<label xml:lang="en-US" xlink:label="tdw_StockAndWarrantsIssuedDuringPeriodValueNewIssues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Issuance of Successor common stock and warrants </label>
<label xml:lang="en-US" xlink:label="tdw_StockAndWarrantsIssuedDuringPeriodValueNewIssues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stock And Warrants Issued During Period Value New Issues </label>
<label xml:lang="en-US" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Total comprehensive loss </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions" xlink:type="locator" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions"/>
<label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Stock option activity/expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndExerciseOfStockOptions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Adjustments To Additional Paid In Capital Sharebased Compensation And Exercise Of Stock Options </label>
<label xml:lang="en-US" xlink:label="tdw_RestrictedStockExpenseCancelledAwards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cancellation/forfeiture of restricted stock units </label>
<label xml:lang="en-US" xlink:label="tdw_RestrictedStockExpenseCancelledAwards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Restricted Stock Expense Cancelled Awards </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Issuance of common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Issued During Period Value New Issues </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition" xlink:type="locator" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition"/>
<label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amortization of restricted stock units </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationRestrictedStockUnitsRequisiteServicePeriodRecognition_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Adjustments To Additional Paid In Capital Share Based Compensation Restricted Stock Units Requisite Service Period Recognition </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:type="locator" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders"/>
<label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Cash paid to noncontrolling interests </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders" xlink:to="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Minority Interest Decrease From Distributions To Noncontrolling Interest Holders </label>
<label xml:lang="en-US" xlink:label="tdw_StockIssuedDuringPeriodValueAmortizationCancellationOfRestrictedStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Amortization/cancellation of restricted stock units </label>
<label xml:lang="en-US" xlink:label="tdw_StockIssuedDuringPeriodValueAmortizationCancellationOfRestrictedStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Issued During Period Value Amortization Cancellation Of Restricted Stock </label>
<label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Balance </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:type="locator" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cancellation of Predecessor equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:to="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Repurchased And Retired During Period Value </label>
<label xml:lang="en-US" xlink:label="us-gaap_MinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Balance </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ReorganizationOfNonCashItems" xlink:type="locator" xlink:label="tdw_ReorganizationOfNonCashItems"/>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationOfNonCashItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reorganization of non cash items. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReorganizationOfNonCashItems" xlink:to="tdw_ReorganizationOfNonCashItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AmortizationOfDeferredDrydockingAndSurveyCosts" xlink:type="locator" xlink:label="tdw_AmortizationOfDeferredDrydockingAndSurveyCosts"/>
<label xml:lang="en-US" xlink:label="tdw_AmortizationOfDeferredDrydockingAndSurveyCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Amortization of deferred drydocking and survey costs. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AmortizationOfDeferredDrydockingAndSurveyCosts" xlink:to="tdw_AmortizationOfDeferredDrydockingAndSurveyCosts_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ExcessTaxExpenseBenefitFromShareBasedCompensationOperatingActivities" xlink:type="locator" xlink:label="tdw_ExcessTaxExpenseBenefitFromShareBasedCompensationOperatingActivities"/>
<label xml:lang="en-US" xlink:label="tdw_ExcessTaxExpenseBenefitFromShareBasedCompensationOperatingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Excess tax expense benefit from share based compensation operating activities. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ExcessTaxExpenseBenefitFromShareBasedCompensationOperatingActivities" xlink:to="tdw_ExcessTaxExpenseBenefitFromShareBasedCompensationOperatingActivities_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_IncreaseDecreaseInAccruedPropertyAndLiabilityLosses" xlink:type="locator" xlink:label="tdw_IncreaseDecreaseInAccruedPropertyAndLiabilityLosses"/>
<label xml:lang="en-US" xlink:label="tdw_IncreaseDecreaseInAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Increase decrease in accrued property and liability losses. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncreaseDecreaseInAccruedPropertyAndLiabilityLosses" xlink:to="tdw_IncreaseDecreaseInAccruedPropertyAndLiabilityLosses_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PaymentsRelatedToNovatedVesselConstructionContract" xlink:type="locator" xlink:label="tdw_PaymentsRelatedToNovatedVesselConstructionContract"/>
<label xml:lang="en-US" xlink:label="tdw_PaymentsRelatedToNovatedVesselConstructionContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Payments related to novated vessel construction contract. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PaymentsRelatedToNovatedVesselConstructionContract" xlink:to="tdw_PaymentsRelatedToNovatedVesselConstructionContract_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ProceedsFromRefundsFromCancelledVesselConstructionContracts" xlink:type="locator" xlink:label="tdw_ProceedsFromRefundsFromCancelledVesselConstructionContracts"/>
<label xml:lang="en-US" xlink:label="tdw_ProceedsFromRefundsFromCancelledVesselConstructionContracts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Proceeds From Refunds From Cancelled Vessel Construction Contracts </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ProceedsFromRefundsFromCancelledVesselConstructionContracts" xlink:to="tdw_ProceedsFromRefundsFromCancelledVesselConstructionContracts_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_CashPaidDuringPeriodForAbstract" xlink:type="locator" xlink:label="tdw_CashPaidDuringPeriodForAbstract"/>
<label xml:lang="en-US" xlink:label="tdw_CashPaidDuringPeriodForAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Cash Paid During Period For [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CashPaidDuringPeriodForAbstract" xlink:to="tdw_CashPaidDuringPeriodForAbstract_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_NoncashInvestingActivitiesAbstract" xlink:type="locator" xlink:label="tdw_NoncashInvestingActivitiesAbstract"/>
<label xml:lang="en-US" xlink:label="tdw_NoncashInvestingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Noncash Investing Activities [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NoncashInvestingActivitiesAbstract" xlink:to="tdw_NoncashInvestingActivitiesAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfCashFlowsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Statement Of Cash Flows [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Operating activities: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided By Used In Operating Activities Continuing Operations [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Adjustments to reconcile net loss to net cash provided by operating activities: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] </label>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationOfNonCashItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reorganization items (non-cash) </label>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationOfNonCashItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reorganization Of Non Cash Items </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:type="locator" xlink:label="us-gaap_DepreciationDepletionAndAmortization"/>
<label xml:lang="en-US" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Depreciation and amortization </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepreciationDepletionAndAmortization" xlink:to="us-gaap_DepreciationDepletionAndAmortization_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Depreciation Depletion And Amortization </label>
<label xml:lang="en-US" xlink:label="tdw_AmortizationOfDeferredDrydockingAndSurveyCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amortization of deferred drydocking and survey costs </label>
<label xml:lang="en-US" xlink:label="tdw_AmortizationOfDeferredDrydockingAndSurveyCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Amortization Of Deferred Drydocking And Survey Costs </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:type="locator" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium"/>
<label xml:lang="en-US" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amortization of debt premiums and discounts </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfDebtDiscountPremium" xlink:to="us-gaap_AmortizationOfDebtDiscountPremium_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Amortization Of Debt Discount Premium </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Provision for deferred income taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Income Tax Expense Benefit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Changes in investments in, at equity, and advances to unconsolidated companies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions" xlink:to="us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Loss From Equity Method Investments Net Of Dividends Or Distributions </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensation"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Compensation expense – stock based </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation </label>
<label xml:lang="en-US" xlink:label="tdw_ExcessTaxExpenseBenefitFromShareBasedCompensationOperatingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Excess tax (benefit) liability on stock options exercised </label>
<label xml:lang="en-US" xlink:label="tdw_ExcessTaxExpenseBenefitFromShareBasedCompensationOperatingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Excess Tax Expense Benefit From Share Based Compensation Operating Activities </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Changes in operating assets and liabilities, net: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Operating Capital [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Trade and other receivables </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables" xlink:to="us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccountsAndOtherReceivables_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Accounts And Other Receivables </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInDueToAffiliates" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInDueToAffiliates"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInDueToAffiliates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Changes in due to/from affiliate, net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDueToAffiliates" xlink:to="us-gaap_IncreaseDecreaseInDueToAffiliates_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInDueToAffiliates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Due To Affiliates </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInInventories"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Marine operating supplies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInInventories" xlink:to="us-gaap_IncreaseDecreaseInInventories_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInInventories_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Inventories </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Other current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Prepaid Deferred Expense And Other Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableTrade" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableTrade"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableTrade_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accounts payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayableTrade" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayableTrade_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableTrade_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Accounts Payable Trade </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Accrued Liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_IncreaseDecreaseInAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued property and liability losses </label>
<label xml:lang="en-US" xlink:label="tdw_IncreaseDecreaseInAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Accrued Property And Liability Losses </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherCurrentLiabilities" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOtherCurrentLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherCurrentLiabilities" xlink:to="us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Other Current Liabilities </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other liabilities and deferred credits </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Other Operating Liabilities </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Other, net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Other Operating Capital Net </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net cash provided by (used in) operating activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided By Used In Operating Activities Continuing Operations </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash flows from investing activities: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided By Used In Investing Activities Continuing Operations [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromSaleOfProductiveAssets" xlink:type="locator" xlink:label="us-gaap_ProceedsFromSaleOfProductiveAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromSaleOfProductiveAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Proceeds from sales of assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfProductiveAssets" xlink:to="us-gaap_ProceedsFromSaleOfProductiveAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromSaleOfProductiveAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds From Sale Of Productive Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
<label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Additions to properties and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Payments To Acquire Property Plant And Equipment </label>
<label xml:lang="en-US" xlink:label="tdw_PaymentsRelatedToNovatedVesselConstructionContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Payments related to novated vessel construction contract </label>
<label xml:lang="en-US" xlink:label="tdw_PaymentsRelatedToNovatedVesselConstructionContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Payments Related To Novated Vessel Construction Contract </label>
<label xml:lang="en-US" xlink:label="tdw_ProceedsFromRefundsFromCancelledVesselConstructionContracts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Refunds from cancelled vessel construction contracts </label>
<label xml:lang="en-US" xlink:label="tdw_ProceedsFromRefundsFromCancelledVesselConstructionContracts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds From Refunds From Cancelled Vessel Construction Contracts </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net cash provided by investing activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided By Used In Investing Activities Continuing Operations </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash flows from financing activities: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided By Used In Financing Activities Continuing Operations [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:type="locator" xlink:label="us-gaap_RepaymentsOfLongTermDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Principal payments on long-term debt </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfLongTermDebt" xlink:to="us-gaap_RepaymentsOfLongTermDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Repayments Of Long Term Debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RepaymentsOfUnsecuredDebt" xlink:type="locator" xlink:label="us-gaap_RepaymentsOfUnsecuredDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_RepaymentsOfUnsecuredDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Cash payments to General Unsecured Creditors </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RepaymentsOfUnsecuredDebt" xlink:to="us-gaap_RepaymentsOfUnsecuredDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RepaymentsOfUnsecuredDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Repayments Of Unsecured Debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:type="locator" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash received for issuance of common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds From Issuance Of Common Stock </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:type="locator" xlink:label="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:to="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds From Payments For Other Financing Activities </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net cash used in financing activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Net Cash Provided By Used In Financing Activities Continuing Operations </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:type="locator" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net change in cash, cash equivalents and restricted cash </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:type="locator" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Cash, cash equivalents and restricted cash at beginning of period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents </label>
<label xml:lang="en-US" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Cash, cash equivalents and restricted cash at end of period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:type="locator" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Supplemental disclosure of cash flow information: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Supplemental Cash Flow Information [Abstract] </label>
<label xml:lang="en-US" xlink:label="tdw_CashPaidDuringPeriodForAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash paid during the year for: </label>
<label xml:lang="en-US" xlink:label="tdw_CashPaidDuringPeriodForAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cash Paid During Period For [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestPaidNet" xlink:type="locator" xlink:label="us-gaap_InterestPaidNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Interest, net of amounts capitalized </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPaidNet" xlink:to="us-gaap_InterestPaidNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Interest Paid Net </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxesPaid" xlink:type="locator" xlink:label="us-gaap_IncomeTaxesPaid"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxesPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxesPaid" xlink:to="us-gaap_IncomeTaxesPaid_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxesPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Taxes Paid </label>
<label xml:lang="en-US" xlink:label="tdw_NoncashInvestingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Supplemental disclosure of noncash investing activities: </label>
<label xml:lang="en-US" xlink:label="tdw_NoncashInvestingActivitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Noncash Investing Activities [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueOfAssetsAcquired" xlink:type="locator" xlink:label="us-gaap_FairValueOfAssetsAcquired"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueOfAssetsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additions to properties and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueOfAssetsAcquired" xlink:to="us-gaap_FairValueOfAssetsAcquired_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueOfAssetsAcquired_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Of Assets Acquired </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:type="locator" xlink:label="us-gaap_AccountingPoliciesAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accounting Policies [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_AccountingPoliciesAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock" xlink:type="locator" xlink:label="us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock" xlink:to="us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Business Description And Accounting Policies [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReorganizationsAbstract" xlink:type="locator" xlink:label="us-gaap_ReorganizationsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReorganizationsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reorganizations [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReorganizationsAbstract" xlink:to="us-gaap_ReorganizationsAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReorganizationUnderChapter11OfUSBankruptcyCodeDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_ReorganizationUnderChapter11OfUSBankruptcyCodeDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReorganizationUnderChapter11OfUSBankruptcyCodeDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> CHAPTER 11 PROCEEDINGS AND EMERGENCE </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReorganizationUnderChapter11OfUSBankruptcyCodeDisclosureTextBlock" xlink:to="us-gaap_ReorganizationUnderChapter11OfUSBankruptcyCodeDisclosureTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReorganizationUnderChapter11OfUSBankruptcyCodeDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reorganization Under Chapter11 Of U S Bankruptcy Code Disclosure [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAccountingDisclosureTextBlock" xlink:type="locator" xlink:label="tdw_FreshStartAccountingDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start accounting disclosure text block. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAccountingDisclosureTextBlock" xlink:to="tdw_FreshStartAccountingDisclosureTextBlock_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartBalanceSheetAbstract" xlink:type="locator" xlink:label="us-gaap_FreshStartBalanceSheetAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartBalanceSheetAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Balance Sheet [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartBalanceSheetAbstract" xlink:to="us-gaap_FreshStartBalanceSheetAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> FRESH-START ACCOUNTING </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Accounting Disclosure [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ReorganizationItemsDisclosureTextBlock" xlink:type="locator" xlink:label="tdw_ReorganizationItemsDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationItemsDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reorganization items. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReorganizationItemsDisclosureTextBlock" xlink:to="tdw_ReorganizationItemsDisclosureTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationItemsDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> REORGANIZATION ITEMS </label>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationItemsDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reorganization Items Disclosure [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract" xlink:type="locator" xlink:label="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Method Investments And Joint Ventures [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract" xlink:to="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityMethodInvestmentsDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> INVESTMENT IN UNCONSOLIDATED COMPANIES </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentsDisclosureTextBlock" xlink:to="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Method Investments Disclosure [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Disclosure [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxDisclosureAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> INCOME TAXES </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxDisclosureTextBlock" xlink:to="us-gaap_IncomeTaxDisclosureTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Disclosure [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DebtDisclosureAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Disclosure [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtDisclosureAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_DebtDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> INDEBTEDNESS </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureTextBlock" xlink:to="us-gaap_DebtDisclosureTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Disclosure [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Compensation And Retirement Disclosure [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_CompensationAndRetirementDisclosureAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> EMPLOYEE RETIREMENT PLANS </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:to="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Pension And Other Postretirement Benefits Disclosure [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_OtherCurrentAssetsOtherAssetsOtherCurrentLiabilitiesAccruedExpensesAndOtherLiabilitiesAndDeferredCreditsTextBlock" xlink:type="locator" xlink:label="tdw_OtherCurrentAssetsOtherAssetsOtherCurrentLiabilitiesAccruedExpensesAndOtherLiabilitiesAndDeferredCreditsTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_OtherCurrentAssetsOtherAssetsOtherCurrentLiabilitiesAccruedExpensesAndOtherLiabilitiesAndDeferredCreditsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Other current assets, other assets, other current liabilities, accrued expenses and other liabilities and deferred credits. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OtherCurrentAssetsOtherAssetsOtherCurrentLiabilitiesAccruedExpensesAndOtherLiabilitiesAndDeferredCreditsTextBlock" xlink:to="tdw_OtherCurrentAssetsOtherAssetsOtherCurrentLiabilitiesAccruedExpensesAndOtherLiabilitiesAndDeferredCreditsTextBlock_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_OtherCurrentAssetsOtherAssetsAccruedExpensesOtherCurrentLiabilitiesAndOtherNonCurrentLiabilitiesAndDeferredCreditsAbstract" xlink:type="locator" xlink:label="tdw_OtherCurrentAssetsOtherAssetsAccruedExpensesOtherCurrentLiabilitiesAndOtherNonCurrentLiabilitiesAndDeferredCreditsAbstract"/>
<label xml:lang="en-US" xlink:label="tdw_OtherCurrentAssetsOtherAssetsAccruedExpensesOtherCurrentLiabilitiesAndOtherNonCurrentLiabilitiesAndDeferredCreditsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Other current assets, other assets accrued expenses other current liabilities and other non current liabilities and deferred credits. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OtherCurrentAssetsOtherAssetsAccruedExpensesOtherCurrentLiabilitiesAndOtherNonCurrentLiabilitiesAndDeferredCreditsAbstract" xlink:to="tdw_OtherCurrentAssetsOtherAssetsAccruedExpensesOtherCurrentLiabilitiesAndOtherNonCurrentLiabilitiesAndDeferredCreditsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_OtherCurrentAssetsOtherAssetsAccruedExpensesOtherCurrentLiabilitiesAndOtherNonCurrentLiabilitiesAndDeferredCreditsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Current Assets Other Assets Accrued Expenses Other Current Liabilities And Other Non Current Liabilities And Deferred Credits [Abstract] </label>
<label xml:lang="en-US" xlink:label="tdw_OtherCurrentAssetsOtherAssetsOtherCurrentLiabilitiesAccruedExpensesAndOtherLiabilitiesAndDeferredCreditsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> OTHER CURRENT ASSETS, OTHER ASSETS, ACCRUED EXPENSES, OTHER CURRENT LIABILITIES, AND OTHER LIABILITIES AND DEFERRED CREDITS </label>
<label xml:lang="en-US" xlink:label="tdw_OtherCurrentAssetsOtherAssetsOtherCurrentLiabilitiesAccruedExpensesAndOtherLiabilitiesAndDeferredCreditsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Current Assets Other Assets Other Current Liabilities Accrued Expenses And Other Liabilities And Deferred Credits [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:type="locator" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:type="locator" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> STOCK-BASED COMPENSATION AND INCENTIVE PLANS </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:to="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Disclosure Of Compensation Related Costs Share Based Payments [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityAbstract" xlink:type="locator" xlink:label="us-gaap_EquityAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityAbstract" xlink:to="us-gaap_EquityAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> STOCKHOLDERS' EQUITY </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:to="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stockholders Equity Note Disclosure [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Earnings Per Share [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> EARNINGS PER SHARE </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareTextBlock" xlink:to="us-gaap_EarningsPerShareTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Earnings Per Share [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LeasesAbstract" xlink:type="locator" xlink:label="us-gaap_LeasesAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_LeasesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Leases [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeasesAbstract" xlink:to="us-gaap_LeasesAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SaleLeasebackTransactionDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_SaleLeasebackTransactionDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleLeasebackTransactionDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> SALE/LEASEBACK ARRANGEMENTS </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleLeasebackTransactionDisclosureTextBlock" xlink:to="us-gaap_SaleLeasebackTransactionDisclosureTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleLeasebackTransactionDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sale Leaseback Transaction Disclosure [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Commitments And Contingencies Disclosure [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> COMMITMENTS AND CONTINGENCIES </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Commitments And Contingencies Disclosure [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:type="locator" xlink:label="us-gaap_FairValueDisclosuresAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Disclosures [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueDisclosuresAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementInputsDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementInputsDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementInputsDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> FAIR VALUE MEASUREMENTS AND DISCLOSURES </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementInputsDisclosureTextBlock" xlink:to="us-gaap_FairValueMeasurementInputsDisclosureTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementInputsDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Measurement Inputs Disclosure [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_GainLossOnDispositionOfAssetsTextBlock" xlink:type="locator" xlink:label="tdw_GainLossOnDispositionOfAssetsTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_GainLossOnDispositionOfAssetsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Gain (Loss) on Disposition of Assets [Text Block] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_GainLossOnDispositionOfAssetsTextBlock" xlink:to="tdw_GainLossOnDispositionOfAssetsTextBlock_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GainLossOnDispositionOfAssetsAbstract" xlink:type="locator" xlink:label="us-gaap_GainLossOnDispositionOfAssetsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_GainLossOnDispositionOfAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Gain Loss On Disposition Of Assets [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnDispositionOfAssetsAbstract" xlink:to="us-gaap_GainLossOnDispositionOfAssetsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_GainLossOnDispositionOfAssetsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> GAIN ON DISPOSITION OF ASSETS, NET </label>
<label xml:lang="en-US" xlink:label="tdw_GainLossOnDispositionOfAssetsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Gain Loss On Disposition Of Assets [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SegmentReportingInformationBySegmentTextBlock" xlink:type="locator" xlink:label="tdw_SegmentReportingInformationBySegmentTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_SegmentReportingInformationBySegmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Disclosure about the profit or loss and total assets for each reportable segment, reviewed by the chief operating decision maker or regularly provided to the chief operating decision maker. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SegmentReportingInformationBySegmentTextBlock" xlink:to="tdw_SegmentReportingInformationBySegmentTextBlock_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:type="locator" xlink:label="us-gaap_SegmentReportingAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Segment Reporting [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingAbstract" xlink:to="us-gaap_SegmentReportingAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SegmentReportingInformationBySegmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> SEGMENT INFORMATION, GEOGRAPHICAL DATA AND MAJOR CUSTOMERS </label>
<label xml:lang="en-US" xlink:label="tdw_SegmentReportingInformationBySegmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Segment Reporting Information By Segment [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_QuarterlyFinancialInformationDisclosureAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_QuarterlyFinancialInformationDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Quarterly Financial Information Disclosure [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:to="us-gaap_QuarterlyFinancialInformationDisclosureAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_QuarterlyFinancialInformationTextBlock" xlink:type="locator" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> QUARTERLY FINANCIAL DATA </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_QuarterlyFinancialInformationTextBlock" xlink:to="us-gaap_QuarterlyFinancialInformationTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Quarterly Financial Information [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetImpairmentChargesAbstract" xlink:type="locator" xlink:label="us-gaap_AssetImpairmentChargesAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetImpairmentChargesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Asset Impairment Charges [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetImpairmentChargesAbstract" xlink:to="us-gaap_AssetImpairmentChargesAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetImpairmentChargesTextBlock" xlink:type="locator" xlink:label="us-gaap_AssetImpairmentChargesTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetImpairmentChargesTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> ASSET IMPAIRMENTS </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetImpairmentChargesTextBlock" xlink:to="us-gaap_AssetImpairmentChargesTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetImpairmentChargesTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Asset Impairment Charges [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TransitionPeriodComparableDataTextBlock" xlink:type="locator" xlink:label="tdw_TransitionPeriodComparableDataTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_TransitionPeriodComparableDataTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Transition period comparable data. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TransitionPeriodComparableDataTextBlock" xlink:to="tdw_TransitionPeriodComparableDataTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_TransitionPeriodComparableDataTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> TRANSITION PERIOD COMPARATIVE DATA </label>
<label xml:lang="en-US" xlink:label="tdw_TransitionPeriodComparableDataTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Transition Period Comparable Data [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:type="locator" xlink:label="us-gaap_SubsequentEventsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Events [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsAbstract" xlink:to="us-gaap_SubsequentEventsAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:type="locator" xlink:label="us-gaap_SubsequentEventsTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> SUBSEQUENT EVENTS </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsTextBlock" xlink:to="us-gaap_SubsequentEventsTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Events [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAndQualifyingAccountsAbstract" xlink:type="locator" xlink:label="us-gaap_ValuationAndQualifyingAccountsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAndQualifyingAccountsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Valuation And Qualifying Accounts [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAndQualifyingAccountsAbstract" xlink:to="us-gaap_ValuationAndQualifyingAccountsAbstract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Valuation and Qualifying Accounts </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock" xlink:to="us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Valuation And Qualifying Accounts Disclosure [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NatureOfOperationsPolicyTextBlock" xlink:type="locator" xlink:label="tdw_NatureOfOperationsPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_NatureOfOperationsPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Nature of Operations </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NatureOfOperationsPolicyTextBlock" xlink:to="tdw_NatureOfOperationsPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NatureOfOperationsPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Nature of Operations </label>
<label xml:lang="en-US" xlink:label="tdw_NatureOfOperationsPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Nature Of Operations Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_ConsolidationPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Principles of Consolidation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConsolidationPolicyTextBlock" xlink:to="us-gaap_ConsolidationPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Consolidation Policy [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ChangeToFiscalYearEndPolicyTextBlock" xlink:type="locator" xlink:label="tdw_ChangeToFiscalYearEndPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ChangeToFiscalYearEndPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Change to fiscal year end. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ChangeToFiscalYearEndPolicyTextBlock" xlink:to="tdw_ChangeToFiscalYearEndPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ChangeToFiscalYearEndPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change to Fiscal Year End </label>
<label xml:lang="en-US" xlink:label="tdw_ChangeToFiscalYearEndPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Change To Fiscal Year End Policy [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAccountingPolicyTextBlock" xlink:type="locator" xlink:label="tdw_FreshStartAccountingPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start accounting. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAccountingPolicyTextBlock" xlink:to="tdw_FreshStartAccountingPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh Start Accounting </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Accounting Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UseOfEstimates" xlink:type="locator" xlink:label="us-gaap_UseOfEstimates"/>
<label xml:lang="en-US" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Use of Estimates in Preparation of Financial Statements </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UseOfEstimates" xlink:to="us-gaap_UseOfEstimates_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Use Of Estimates </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash Equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:to="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cash And Cash Equivalents Policy [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_RestrictedCashPolicyTextBlock" xlink:type="locator" xlink:label="tdw_RestrictedCashPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_RestrictedCashPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Restricted cash. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RestrictedCashPolicyTextBlock" xlink:to="tdw_RestrictedCashPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_RestrictedCashPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restricted Cash </label>
<label xml:lang="en-US" xlink:label="tdw_RestrictedCashPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Restricted Cash Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InventorySuppliesPolicy" xlink:type="locator" xlink:label="us-gaap_InventorySuppliesPolicy"/>
<label xml:lang="en-US" xlink:label="us-gaap_InventorySuppliesPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Marine Operating Supplies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventorySuppliesPolicy" xlink:to="us-gaap_InventorySuppliesPolicy_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_InventorySuppliesPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Inventory Supplies Policy </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Properties and Equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Impairment of Long-Lived Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:to="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Impairment Or Disposal Of Long Lived Assets Policy [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AccruedPropertyAndLiabilityLossesPolicyTextBlock" xlink:type="locator" xlink:label="tdw_AccruedPropertyAndLiabilityLossesPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_AccruedPropertyAndLiabilityLossesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Accrued Property and Liability Losses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AccruedPropertyAndLiabilityLossesPolicyTextBlock" xlink:to="tdw_AccruedPropertyAndLiabilityLossesPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AccruedPropertyAndLiabilityLossesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued Property and Liability Losses </label>
<label xml:lang="en-US" xlink:label="tdw_AccruedPropertyAndLiabilityLossesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accrued Property And Liability Losses Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementPlansPolicy" xlink:type="locator" xlink:label="us-gaap_PensionAndOtherPostretirementPlansPolicy"/>
<label xml:lang="en-US" xlink:label="us-gaap_PensionAndOtherPostretirementPlansPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Pension and Other Postretirement Benefits </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PensionAndOtherPostretirementPlansPolicy" xlink:to="us-gaap_PensionAndOtherPostretirementPlansPolicy_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PensionAndOtherPostretirementPlansPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Pension And Other Postretirement Plans Policy </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_IncomeTaxPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income Taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxPolicyTextBlock" xlink:to="us-gaap_IncomeTaxPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Revenue Recognition </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRecognitionPolicyTextBlock" xlink:to="us-gaap_RevenueRecognitionPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RevenueRecognitionPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Revenue Recognition Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostOfSalesPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_CostOfSalesPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_CostOfSalesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Operating Costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostOfSalesPolicyTextBlock" xlink:to="us-gaap_CostOfSalesPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CostOfSalesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cost Of Sales Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Foreign Currency Translation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:to="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Foreign Currency Transactions And Translations Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Earnings Per Share </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerSharePolicyTextBlock" xlink:to="us-gaap_EarningsPerSharePolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Earnings Per Share Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConcentrationRiskCreditRisk" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskCreditRisk"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskCreditRisk_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Concentrations of Credit Risk </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskCreditRisk" xlink:to="us-gaap_ConcentrationRiskCreditRisk_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskCreditRisk_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Concentration Risk Credit Risk </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Stock-Based Compensation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:to="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Option And Incentive Plans Policy </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ComprehensiveIncomePolicyPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomePolicyPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Comprehensive Income </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComprehensiveIncomePolicyPolicyTextBlock" xlink:to="us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Comprehensive Income Policy Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativesPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_DerivativesPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_DerivativesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Derivative Instruments and Hedging Activities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativesPolicyTextBlock" xlink:to="us-gaap_DerivativesPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DerivativesPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Derivatives Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:type="locator" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value Measurements </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:to="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Of Financial Instruments Policy </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventsPolicyPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_SubsequentEventsPolicyPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventsPolicyPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Subsequent Events </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsPolicyPolicyTextBlock" xlink:to="us-gaap_SubsequentEventsPolicyPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventsPolicyPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Events Policy Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accounting Pronouncements </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:to="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> New Accounting Pronouncements Policy Policy [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Summaries of Net Properties and Equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current and Long-Term Liabilities Related to Accrued Property and Liability Losses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock" xlink:to="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAccruedLiabilitiesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Accrued Liabilities Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ReconciliationOfEnterpriseValueToEstimatedFairValueTableTextBlock" xlink:type="locator" xlink:label="tdw_ReconciliationOfEnterpriseValueToEstimatedFairValueTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfEnterpriseValueToEstimatedFairValueTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reconciliation of enterprise value to estimated fair value. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReconciliationOfEnterpriseValueToEstimatedFairValueTableTextBlock" xlink:to="tdw_ReconciliationOfEnterpriseValueToEstimatedFairValueTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfEnterpriseValueToEstimatedFairValueTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reconciliation of Enterprise Value to Estimated Fair Value of Successor's Common Stock </label>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfEnterpriseValueToEstimatedFairValueTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reconciliation Of Enterprise Value To Estimated Fair Value Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ReconciliationOfEnterpriseValueToEstimatedReorganizationValueTableTextBlock" xlink:type="locator" xlink:label="tdw_ReconciliationOfEnterpriseValueToEstimatedReorganizationValueTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfEnterpriseValueToEstimatedReorganizationValueTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reconciliation of enterprise value to estimated reorganization value. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReconciliationOfEnterpriseValueToEstimatedReorganizationValueTableTextBlock" xlink:to="tdw_ReconciliationOfEnterpriseValueToEstimatedReorganizationValueTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfEnterpriseValueToEstimatedReorganizationValueTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reconciliation of Enterprise Value to its Reorganization Value </label>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfEnterpriseValueToEstimatedReorganizationValueTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reconciliation Of Enterprise Value To Estimated Reorganization Value Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfFreshStartAdjustmentsTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfFreshStartAdjustmentsTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfFreshStartAdjustmentsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Summary of Consolidated Balance Sheet </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFreshStartAdjustmentsTextBlock" xlink:to="us-gaap_ScheduleOfFreshStartAdjustmentsTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfFreshStartAdjustmentsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Fresh Start Adjustments [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ComponentsOfReorganizationItemsTableTextBlock" xlink:type="locator" xlink:label="tdw_ComponentsOfReorganizationItemsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ComponentsOfReorganizationItemsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Components of reorganization items. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ComponentsOfReorganizationItemsTableTextBlock" xlink:to="tdw_ComponentsOfReorganizationItemsTableTextBlock_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReorganizationItemsAbstract" xlink:type="locator" xlink:label="us-gaap_ReorganizationItemsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReorganizationItemsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reorganization Items [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReorganizationItemsAbstract" xlink:to="us-gaap_ReorganizationItemsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ComponentsOfReorganizationItemsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Summary of Components Included in Reorganization Items </label>
<label xml:lang="en-US" xlink:label="tdw_ComponentsOfReorganizationItemsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Components Of Reorganization Items Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityMethodInvestmentsTextBlock" xlink:type="locator" xlink:label="us-gaap_EquityMethodInvestmentsTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Investments in at Equity and Advances to Unconsolidated Companies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentsTextBlock" xlink:to="us-gaap_EquityMethodInvestmentsTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Method Investments [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Earnings Before Income Taxes Derived from United States and Non-U.S. Operations </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock" xlink:to="us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Income Before Income Tax Domestic And Foreign Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income Tax Expense (Benefit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:to="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Components Of Income Tax Expense Benefit Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfIncomeTaxExpenseBenefitReconciliationTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfIncomeTaxExpenseBenefitReconciliationTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfIncomeTaxExpenseBenefitReconciliationTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Income Tax Expense Benefit Reconciliation [Table Text Block] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfIncomeTaxExpenseBenefitReconciliationTableTextBlock" xlink:to="tdw_ScheduleOfIncomeTaxExpenseBenefitReconciliationTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfIncomeTaxExpenseBenefitReconciliationTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Tax Rate Applicable to Pre-Tax Earnings </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfIncomeTaxExpenseBenefitReconciliationTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Income Tax Expense Benefit Reconciliation Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Effective Tax Rate Applicable to Pre-Tax Earnings </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:to="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Effective Income Tax Rate Reconciliation Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Significant Portions of Deferred Tax Assets and Deferred Tax Liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:to="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Deferred Tax Assets And Liabilities Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SummaryOfTaxCreditCarryforwardsTextBlock" xlink:type="locator" xlink:label="us-gaap_SummaryOfTaxCreditCarryforwardsTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_SummaryOfTaxCreditCarryforwardsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Tax Credit Carry-Forwards </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SummaryOfTaxCreditCarryforwardsTextBlock" xlink:to="us-gaap_SummaryOfTaxCreditCarryforwardsTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SummaryOfTaxCreditCarryforwardsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Summary Of Tax Credit Carryforwards [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfUncertainTaxPositionsAndIncomeTaxPayableTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfUncertainTaxPositionsAndIncomeTaxPayableTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUncertainTaxPositionsAndIncomeTaxPayableTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Uncertain Tax Positions and Income Tax Payable. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfUncertainTaxPositionsAndIncomeTaxPayableTableTextBlock" xlink:to="tdw_ScheduleOfUncertainTaxPositionsAndIncomeTaxPayableTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUncertainTaxPositionsAndIncomeTaxPayableTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Uncertain Tax Positions and Income Tax Payable </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUncertainTaxPositionsAndIncomeTaxPayableTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Uncertain Tax Positions And Income Tax Payable Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SummaryOfPositionsForWhichSignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleTextBlock" xlink:type="locator" xlink:label="us-gaap_SummaryOfPositionsForWhichSignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_SummaryOfPositionsForWhichSignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Unrecognized Tax Benefits Which Would Lower Effective Tax Rate if Realized </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SummaryOfPositionsForWhichSignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleTextBlock" xlink:to="us-gaap_SummaryOfPositionsForWhichSignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SummaryOfPositionsForWhichSignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Summary Of Positions For Which Significant Change In Unrecognized Tax Benefits Is Reasonably Possible [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SummaryOfIncomeTaxContingenciesTextBlock" xlink:type="locator" xlink:label="us-gaap_SummaryOfIncomeTaxContingenciesTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_SummaryOfIncomeTaxContingenciesTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Reconciliation of Unrecognized Tax Benefits </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SummaryOfIncomeTaxContingenciesTextBlock" xlink:to="us-gaap_SummaryOfIncomeTaxContingenciesTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SummaryOfIncomeTaxContingenciesTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Summary Of Income Tax Contingencies [Text Block] </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis"/>
<label xml:lang="en-US" xlink:label="dei_LegalEntityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Legal Entity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis_lbl"/>
<label xml:lang="en-US" xlink:label="dei_LegalEntityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Legal Entity [Axis] </label>
<loc xlink:href="http://xbrl.sec.gov/dei/2014/dei-2014-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain"/>
<label xml:lang="en-US" xlink:label="dei_EntityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityDomain" xlink:to="dei_EntityDomain_lbl"/>
<label xml:lang="en-US" xlink:label="dei_EntityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Entity [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TromsOffshoreSupplyAsMember" xlink:type="locator" xlink:label="tdw_TromsOffshoreSupplyAsMember"/>
<label xml:lang="en-US" xlink:label="tdw_TromsOffshoreSupplyAsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Troms Offshore Supply AS [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TromsOffshoreSupplyAsMember" xlink:to="tdw_TromsOffshoreSupplyAsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_TromsOffshoreSupplyAsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Troms Offshore Supply AS </label>
<label xml:lang="en-US" xlink:label="tdw_TromsOffshoreSupplyAsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Troms Offshore Supply As [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt Instrument </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentNameDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt Instrument, Name </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="us-gaap_DebtInstrumentNameDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Name [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SeniorNotesTwentyThirteenMember" xlink:type="locator" xlink:label="tdw_SeniorNotesTwentyThirteenMember"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesTwentyThirteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Senior Notes Twenty Thirteen [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SeniorNotesTwentyThirteenMember" xlink:to="tdw_SeniorNotesTwentyThirteenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesTwentyThirteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> September 2013 Senior Notes </label>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesTwentyThirteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Senior Notes Twenty Thirteen [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SeniorNotesTwentyElevenMember" xlink:type="locator" xlink:label="tdw_SeniorNotesTwentyElevenMember"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesTwentyElevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Senior Notes 2011 [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SeniorNotesTwentyElevenMember" xlink:to="tdw_SeniorNotesTwentyElevenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesTwentyElevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> August 2011 Senior Notes </label>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesTwentyElevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Senior Notes Twenty Eleven [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SeniorNotesTwentyTenMember" xlink:type="locator" xlink:label="tdw_SeniorNotesTwentyTenMember"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesTwentyTenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Senior Notes 2010 [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SeniorNotesTwentyTenMember" xlink:to="tdw_SeniorNotesTwentyTenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesTwentyTenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> September 2010 Senior Notes </label>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesTwentyTenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Senior Notes Twenty Ten [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Summary of Debt Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:to="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Debt Instruments [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDebtTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Aggregate Amount of Senior Unsecured Notes Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDebtTableTextBlock" xlink:to="us-gaap_ScheduleOfDebtTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Debt Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_InterestAndDebtCostsIncurredNetOfInterestCapitalizedTableTextBlock" xlink:type="locator" xlink:label="tdw_InterestAndDebtCostsIncurredNetOfInterestCapitalizedTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_InterestAndDebtCostsIncurredNetOfInterestCapitalizedTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Interest And Debt Costs Incurred Net Of Interest Capitalized. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_InterestAndDebtCostsIncurredNetOfInterestCapitalizedTableTextBlock" xlink:to="tdw_InterestAndDebtCostsIncurredNetOfInterestCapitalizedTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_InterestAndDebtCostsIncurredNetOfInterestCapitalizedTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt Costs </label>
<label xml:lang="en-US" xlink:label="tdw_InterestAndDebtCostsIncurredNetOfInterestCapitalizedTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Interest And Debt Costs Incurred Net Of Interest Capitalized Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfCarryingValueOfTrustAssetsAndObligationsUnderSupplementalPlanTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfCarryingValueOfTrustAssetsAndObligationsUnderSupplementalPlanTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCarryingValueOfTrustAssetsAndObligationsUnderSupplementalPlanTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of carrying value of trust assets and obligations under supplemental plan. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfCarryingValueOfTrustAssetsAndObligationsUnderSupplementalPlanTableTextBlock" xlink:to="tdw_ScheduleOfCarryingValueOfTrustAssetsAndObligationsUnderSupplementalPlanTableTextBlock_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanNameAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanNameAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanNameAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retirement Plan Name </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetirementPlanNameAxis" xlink:to="us-gaap_RetirementPlanNameAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanNameAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Retirement Plan Name [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanNameDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanNameDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retirement Plan Name </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetirementPlanNameDomain" xlink:to="us-gaap_RetirementPlanNameDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Retirement Plan Name [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_Plan401kMember" xlink:type="locator" xlink:label="tdw_Plan401kMember"/>
<label xml:lang="en-US" xlink:label="tdw_Plan401kMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Plan 401 k [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_Plan401kMember" xlink:to="tdw_Plan401kMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_Plan401kMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Plan 401 k </label>
<label xml:lang="en-US" xlink:label="tdw_Plan401kMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Plan401k [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_MultinationalRetirementPlanMember" xlink:type="locator" xlink:label="tdw_MultinationalRetirementPlanMember"/>
<label xml:lang="en-US" xlink:label="tdw_MultinationalRetirementPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Multinational Retirement Plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_MultinationalRetirementPlanMember" xlink:to="tdw_MultinationalRetirementPlanMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_MultinationalRetirementPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Multinational Retirement Plan [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCarryingValueOfTrustAssetsAndObligationsUnderSupplementalPlanTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Carrying Value of Trust Assets and Obligations Under Supplemental Plan </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCarryingValueOfTrustAssetsAndObligationsUnderSupplementalPlanTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Carrying Value Of Trust Assets And Obligations Under Supplemental Plan Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfUnrealizedLossGainsInCarryingValueOfTrustAssetsTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfUnrealizedLossGainsInCarryingValueOfTrustAssetsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUnrealizedLossGainsInCarryingValueOfTrustAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of unrealized (loss) gains in carrying value of trust assets. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfUnrealizedLossGainsInCarryingValueOfTrustAssetsTableTextBlock" xlink:to="tdw_ScheduleOfUnrealizedLossGainsInCarryingValueOfTrustAssetsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUnrealizedLossGainsInCarryingValueOfTrustAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Unrealized (Loss) Gains in Carrying Value of Trust Assets </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUnrealizedLossGainsInCarryingValueOfTrustAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Unrealized Loss Gains In Carrying Value Of Trust Assets Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ExpectedLongTermRateOfReturnOnPlanAssetsTextBlock" xlink:type="locator" xlink:label="tdw_ExpectedLongTermRateOfReturnOnPlanAssetsTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ExpectedLongTermRateOfReturnOnPlanAssetsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Expected Long Term Rate of Return on Plan Assets [Table Text Block] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ExpectedLongTermRateOfReturnOnPlanAssetsTextBlock" xlink:to="tdw_ExpectedLongTermRateOfReturnOnPlanAssetsTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ExpectedLongTermRateOfReturnOnPlanAssetsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Minimum and Maximum Rate of Return Plan Assets </label>
<label xml:lang="en-US" xlink:label="tdw_ExpectedLongTermRateOfReturnOnPlanAssetsTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Expected Long Term Rate Of Return On Plan Assets [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfMinimumAndMaximumMarketValueOfPlanAssetsTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfMinimumAndMaximumMarketValueOfPlanAssetsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfMinimumAndMaximumMarketValueOfPlanAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule Of Minimum And Maximum Market Value Of Plan Assets [Table Text Block] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfMinimumAndMaximumMarketValueOfPlanAssetsTableTextBlock" xlink:to="tdw_ScheduleOfMinimumAndMaximumMarketValueOfPlanAssetsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfMinimumAndMaximumMarketValueOfPlanAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Minimum and Maximum Market Value of Plan Assets </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfMinimumAndMaximumMarketValueOfPlanAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Minimum And Maximum Market Value Of Plan Assets Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Asset Allocations </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock" xlink:to="us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Allocation Of Plan Assets Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfFairValuePlanAssetsMeasuredOnRecurringBasisTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfFairValuePlanAssetsMeasuredOnRecurringBasisTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfFairValuePlanAssetsMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Fair Value, Plan Assets Measured on Recurring Basis </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfFairValuePlanAssetsMeasuredOnRecurringBasisTableTextBlock" xlink:to="tdw_ScheduleOfFairValuePlanAssetsMeasuredOnRecurringBasisTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfFairValuePlanAssetsMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value Hierarchy of Plan Assets </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfFairValuePlanAssetsMeasuredOnRecurringBasisTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Fair Value Plan Assets Measured On Recurring Basis Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfNetFundedStatusTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfNetFundedStatusTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfNetFundedStatusTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change in Plan Assets and Obligations </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfNetFundedStatusTableTextBlock" xlink:to="us-gaap_ScheduleOfNetFundedStatusTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfNetFundedStatusTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Net Funded Status Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAccumulatedAndProjectedBenefitObligationsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAccumulatedAndProjectedBenefitObligationsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAccumulatedAndProjectedBenefitObligationsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Projected and Accumulated Benefit Obligation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccumulatedAndProjectedBenefitObligationsTableTextBlock" xlink:to="us-gaap_ScheduleOfAccumulatedAndProjectedBenefitObligationsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAccumulatedAndProjectedBenefitObligationsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Accumulated And Projected Benefit Obligations Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Accumulated Benefit Obligation in Excess of Plan Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock" xlink:to="us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Accumulated Benefit Obligations In Excess Of Fair Value Of Plan Assets Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfNetBenefitCostsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfNetBenefitCostsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Net Periodic Benefit Cost </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfNetBenefitCostsTableTextBlock" xlink:to="us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfNetBenefitCostsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Net Benefit Costs Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Net Periodic Benefit Cost for Postretirement Health Care and Life Insurance Plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock" xlink:to="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfCostsOfRetirementPlansTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Costs Of Retirement Plans Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Other Changes in Plan Assets and Benefit Obligations Recognized in OCI </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock" xlink:to="us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Amounts Recognized In Other Comprehensive Income Loss Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (Loss) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Defined Benefit Plan Amounts Recognized In Other Comprehensive Income Loss Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Expected Amounts Net Periodic Benefit Costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock" xlink:to="us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Amounts In Accumulated Other Comprehensive Income Loss To Be Recognized Over Next Fiscal Year Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAssumptionsUsedTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Assumptions </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock" xlink:to="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Assumptions Used Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Expected Benefit Payments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock" xlink:to="us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Expected Benefit Payments Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfHealthCareCostTrendRatesTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfHealthCareCostTrendRatesTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfHealthCareCostTrendRatesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Assumed Health Care Cost Trends Rates </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfHealthCareCostTrendRatesTableTextBlock" xlink:to="us-gaap_ScheduleOfHealthCareCostTrendRatesTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfHealthCareCostTrendRatesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Health Care Cost Trend Rates Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> One-Percentage Rate Change in Assumed Health Care Cost Trend Rates and Its Effects on Accumulated Postretirement Benefit Obligation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesTableTextBlock" xlink:to="us-gaap_ScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEffectOfOnePercentagePointChangeInAssumedHealthCareCostTrendRatesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Effect Of One Percentage Point Change In Assumed Health Care Cost Trend Rates Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfNumberOfCommonStockSharesHeldTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfNumberOfCommonStockSharesHeldTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfNumberOfCommonStockSharesHeldTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of number of common stock shares held. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfNumberOfCommonStockSharesHeldTableTextBlock" xlink:to="tdw_ScheduleOfNumberOfCommonStockSharesHeldTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfNumberOfCommonStockSharesHeldTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Tidewater Common Stock Shares, Series A Warrants and Series B Warrants Held </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfNumberOfCommonStockSharesHeldTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Number Of Common Stock Shares Held Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ExpensesRelatedToDefinedContributionsPlanTextBlock" xlink:type="locator" xlink:label="tdw_ExpensesRelatedToDefinedContributionsPlanTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ExpensesRelatedToDefinedContributionsPlanTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Expenses related to defined contributions plan [text block] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ExpensesRelatedToDefinedContributionsPlanTextBlock" xlink:to="tdw_ExpensesRelatedToDefinedContributionsPlanTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ExpensesRelatedToDefinedContributionsPlanTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amounts Charged to Expense Related to Contribution Plans </label>
<label xml:lang="en-US" xlink:label="tdw_ExpensesRelatedToDefinedContributionsPlanTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Expenses Related To Defined Contributions Plan [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Other Current Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock" xlink:to="us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Other Current Assets Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfOtherAssetsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfOtherAssetsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfOtherAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Other Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfOtherAssetsTableTextBlock" xlink:to="us-gaap_ScheduleOfOtherAssetsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfOtherAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Other Assets Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfAccruedExpensesTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfAccruedExpensesTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfAccruedExpensesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of accrued expenses. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfAccruedExpensesTableTextBlock" xlink:to="tdw_ScheduleOfAccruedExpensesTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfAccruedExpensesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Accrued Expenses </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfAccruedExpensesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Accrued Expenses Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherCurrentLiabilitiesTableTextBlock" xlink:type="locator" xlink:label="us-gaap_OtherCurrentLiabilitiesTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherCurrentLiabilitiesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Other Current Liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherCurrentLiabilitiesTableTextBlock" xlink:to="us-gaap_OtherCurrentLiabilitiesTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherCurrentLiabilitiesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Current Liabilities Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfOtherLiabilitiesAndDeferredCreditsTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfOtherLiabilitiesAndDeferredCreditsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfOtherLiabilitiesAndDeferredCreditsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of other liabilities and deferred credits. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfOtherLiabilitiesAndDeferredCreditsTableTextBlock" xlink:to="tdw_ScheduleOfOtherLiabilitiesAndDeferredCreditsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfOtherLiabilitiesAndDeferredCreditsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Other Liabilities and Deferred Credits </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfOtherLiabilitiesAndDeferredCreditsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Other Liabilities And Deferred Credits Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfCommonStockSharesReservedForIssuanceAndSharesAvailableForGrantTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfCommonStockSharesReservedForIssuanceAndSharesAvailableForGrantTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCommonStockSharesReservedForIssuanceAndSharesAvailableForGrantTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule Of Common Stock Shares Reserved For Issuance And Shares Available For Grant [Table Text Block] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfCommonStockSharesReservedForIssuanceAndSharesAvailableForGrantTableTextBlock" xlink:to="tdw_ScheduleOfCommonStockSharesReservedForIssuanceAndSharesAvailableForGrantTableTextBlock_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AwardTypeAxis" xlink:type="locator" xlink:label="us-gaap_AwardTypeAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_AwardTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Award Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_AwardTypeAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AwardTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Award Type [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity Award </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:type="locator" xlink:label="us-gaap_RestrictedStockUnitsRSUMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestrictedStockUnitsRSUMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restricted Stock Units (RSUs) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockUnitsRSUMember" xlink:to="us-gaap_RestrictedStockUnitsRSUMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestrictedStockUnitsRSUMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Restricted Stock Units R S U [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PhantomStockPlanMember" xlink:type="locator" xlink:label="tdw_PhantomStockPlanMember"/>
<label xml:lang="en-US" xlink:label="tdw_PhantomStockPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Phantom Stock Plan [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PhantomStockPlanMember" xlink:to="tdw_PhantomStockPlanMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PhantomStockPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Phantom Stock Plan </label>
<label xml:lang="en-US" xlink:label="tdw_PhantomStockPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Phantom Stock Plan [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PerformanceBasedUnitMember" xlink:type="locator" xlink:label="tdw_PerformanceBasedUnitMember"/>
<label xml:lang="en-US" xlink:label="tdw_PerformanceBasedUnitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Performance Based Unit [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PerformanceBasedUnitMember" xlink:to="tdw_PerformanceBasedUnitMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PerformanceBasedUnitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Cash-based Performance Plan </label>
<label xml:lang="en-US" xlink:label="tdw_PerformanceBasedUnitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Performance Based Unit [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsByTypeOfDeferredCompensationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Arrangement With Individual Share Based Payments By Type Of Deferred Compensation [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain" xlink:type="locator" xlink:label="us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity-Based Arrangements, Individual Contracts, Type of Deferred Compensation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain" xlink:to="us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityBasedArrangementsIndividualContractsTypeOfDeferredCompensationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Based Arrangements Individual Contracts Type Of Deferred Compensation [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCompensationShareBasedPaymentsMember" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationShareBasedPaymentsMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationShareBasedPaymentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred Stock Unit </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationShareBasedPaymentsMember" xlink:to="us-gaap_DeferredCompensationShareBasedPaymentsMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationShareBasedPaymentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Share Based Payments [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCommonStockSharesReservedForIssuanceAndSharesAvailableForGrantTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Common Stock Shares Reserved for Issuance and Shares Available for Grant </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCommonStockSharesReservedForIssuanceAndSharesAvailableForGrantTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Common Stock Shares Reserved For Issuance And Shares Available For Grant Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value and Assumptions Used for Stock Options Issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Stock Option Activity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValueTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValueTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValueTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional Information Regarding Stock Options </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValueTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValueTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGrantDateIntrinsicValueTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Grant Date Intrinsic Value Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_CompensationAndBenefitPlansExpenseRecognizedInEarningsTableTextBlock" xlink:type="locator" xlink:label="tdw_CompensationAndBenefitPlansExpenseRecognizedInEarningsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_CompensationAndBenefitPlansExpenseRecognizedInEarningsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Compensation and Benefit Plans Expense Recognized in Earnings [Table Text Block] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CompensationAndBenefitPlansExpenseRecognizedInEarningsTableTextBlock" xlink:to="tdw_CompensationAndBenefitPlansExpenseRecognizedInEarningsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_CompensationAndBenefitPlansExpenseRecognizedInEarningsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Effect on Basic and Diluted Earnings Per Share, and Stock Option Compensation Expense </label>
<label xml:lang="en-US" xlink:label="tdw_CompensationAndBenefitPlansExpenseRecognizedInEarningsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Compensation And Benefit Plans Expense Recognized In Earnings Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Summary Of Restricted Stock Unit Activity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Sharebased Compensation Restricted Stock And Restricted Stock Units Activity Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AllocatedShareBasedCompensationExpenseRecognizedPeriodCostsTableTextBlock" xlink:type="locator" xlink:label="tdw_AllocatedShareBasedCompensationExpenseRecognizedPeriodCostsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_AllocatedShareBasedCompensationExpenseRecognizedPeriodCostsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Allocated share based compensation expense recognized period costs. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AllocatedShareBasedCompensationExpenseRecognizedPeriodCostsTableTextBlock" xlink:to="tdw_AllocatedShareBasedCompensationExpenseRecognizedPeriodCostsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AllocatedShareBasedCompensationExpenseRecognizedPeriodCostsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Restricted Stock Compensation Expense and Grant Date Fair Value </label>
<label xml:lang="en-US" xlink:label="tdw_AllocatedShareBasedCompensationExpenseRecognizedPeriodCostsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Allocated Share Based Compensation Expense Recognized Period Costs Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Summary of Phantom Stock Activity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Nonvested Restricted Stock Units Activity Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationPerformanceSharesAwardUnvestedActivityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationPerformanceSharesAwardUnvestedActivityTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationPerformanceSharesAwardUnvestedActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Summary of Cash-Based Performance Plan Unit Activity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationPerformanceSharesAwardUnvestedActivityTableTextBlock" xlink:to="us-gaap_ShareBasedCompensationPerformanceSharesAwardUnvestedActivityTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationPerformanceSharesAwardUnvestedActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Performance Shares Award Unvested Activity Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationNonemployeeDirectorStockAwardPlanActivityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationNonemployeeDirectorStockAwardPlanActivityTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedCompensationNonemployeeDirectorStockAwardPlanActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Summary of Deferred Stock Unit Activity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationNonemployeeDirectorStockAwardPlanActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedCompensationNonemployeeDirectorStockAwardPlanActivityTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedCompensationNonemployeeDirectorStockAwardPlanActivityTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Share Based Compensation Nonemployee Director Stock Award Plan Activity Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Deferred Cash Award Expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTextBlock" xlink:to="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Deferred Compensation Arrangement With Individual Excluding Share Based Payments And Postretirement Benefits By Title Of Individual And By Type Of Deferred Compensation [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfStockByClassTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfStockByClassTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfStockByClassTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Authorized and Issued Common Stock and Preferred Stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfStockByClassTextBlock" xlink:to="us-gaap_ScheduleOfStockByClassTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfStockByClassTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Stock By Class [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Changes in Accumulated Other Comprehensive Income (Loss) by Component, Net of Tax </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:to="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Accumulated Other Comprehensive Income Loss Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reclassifications from Accumulated Other Comprehensive Income (Loss) to Consolidated Statement of Income </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock" xlink:to="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reclassification Out Of Accumulated Other Comprehensive Income Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Components of Basic and Diluted Earnings Per Share </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:to="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfFairValueOtherFinancialInstrumentsMeasuredTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfFairValueOtherFinancialInstrumentsMeasuredTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfFairValueOtherFinancialInstrumentsMeasuredTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of fair value other financial instruments measured. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfFairValueOtherFinancialInstrumentsMeasuredTableTextBlock" xlink:to="tdw_ScheduleOfFairValueOtherFinancialInstrumentsMeasuredTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfFairValueOtherFinancialInstrumentsMeasuredTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Fair Value Other Financial Instruments Measured </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfFairValueOtherFinancialInstrumentsMeasuredTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Fair Value Other Financial Instruments Measured Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfGainLossOnDispositionOfAssetsTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfGainLossOnDispositionOfAssetsTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfGainLossOnDispositionOfAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of gain loss on disposition of assets. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfGainLossOnDispositionOfAssetsTableTextBlock" xlink:to="tdw_ScheduleOfGainLossOnDispositionOfAssetsTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfGainLossOnDispositionOfAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Gain on Disposition of Assets </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfGainLossOnDispositionOfAssetsTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Gain Loss On Disposition Of Assets Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Segment Information, Geographical Data and Major Customers </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Segment Reporting Information By Segment [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfSegmentReportingInformationRevenueByVesselClassTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfSegmentReportingInformationRevenueByVesselClassTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfSegmentReportingInformationRevenueByVesselClassTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of segment reporting information, revenue by vessel class. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfSegmentReportingInformationRevenueByVesselClassTableTextBlock" xlink:to="tdw_ScheduleOfSegmentReportingInformationRevenueByVesselClassTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfSegmentReportingInformationRevenueByVesselClassTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Segment Reporting Information, Revenue by Vessel Class </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfSegmentReportingInformationRevenueByVesselClassTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Segment Reporting Information Revenue By Vessel Class Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_EntityWideMajorCustomerAmountTableTextBlock" xlink:type="locator" xlink:label="tdw_EntityWideMajorCustomerAmountTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_EntityWideMajorCustomerAmountTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Entity wide major customer amount. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_EntityWideMajorCustomerAmountTableTextBlock" xlink:to="tdw_EntityWideMajorCustomerAmountTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_EntityWideMajorCustomerAmountTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity Wide Major Customer Amount </label>
<label xml:lang="en-US" xlink:label="tdw_EntityWideMajorCustomerAmountTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Wide Major Customer Amount Table [Text Block] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Quarterly Financial Information </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:to="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Quarterly Financial Information Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AssetImpairmentChargesTableTextBlock" xlink:type="locator" xlink:label="tdw_AssetImpairmentChargesTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_AssetImpairmentChargesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Asset Impairment Charges Table [Text Block] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AssetImpairmentChargesTableTextBlock" xlink:to="tdw_AssetImpairmentChargesTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AssetImpairmentChargesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Summary of Vessels and ROVs Impaired, Amount of Impairment Incurred and Combined Fair Value of Assets after Impairment Charges </label>
<label xml:lang="en-US" xlink:label="tdw_AssetImpairmentChargesTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Asset Impairment Charges Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfTransitionPeriodComparableDataTableTextBlock" xlink:type="locator" xlink:label="tdw_ScheduleOfTransitionPeriodComparableDataTableTextBlock"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfTransitionPeriodComparableDataTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of transition period comparable data. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfTransitionPeriodComparableDataTableTextBlock" xlink:to="tdw_ScheduleOfTransitionPeriodComparableDataTableTextBlock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfTransitionPeriodComparableDataTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Transition Period Comparable Data </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfTransitionPeriodComparableDataTableTextBlock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Transition Period Comparable Data Table [Text Block] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_HighlyLiquidInvestmentsMaturityPeriod" xlink:type="locator" xlink:label="tdw_HighlyLiquidInvestmentsMaturityPeriod"/>
<label xml:lang="en-US" xlink:label="tdw_HighlyLiquidInvestmentsMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Highly Liquid Investments Maturity Period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_HighlyLiquidInvestmentsMaturityPeriod" xlink:to="tdw_HighlyLiquidInvestmentsMaturityPeriod_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Property Plant And Equipment [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Property Plant And Equipment [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeAxis" xlink:type="locator" xlink:label="us-gaap_RangeAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_RangeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Range </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RangeAxis" xlink:to="us-gaap_RangeAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RangeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Range [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RangeMember" xlink:type="locator" xlink:label="us-gaap_RangeMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_RangeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Range </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RangeMember" xlink:to="us-gaap_RangeMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RangeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Range [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MinimumMember" xlink:type="locator" xlink:label="us-gaap_MinimumMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_MinimumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Minimum </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinimumMember" xlink:to="us-gaap_MinimumMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_MinimumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Minimum [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MaximumMember" xlink:type="locator" xlink:label="us-gaap_MaximumMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_MaximumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Maximum </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MaximumMember" xlink:to="us-gaap_MaximumMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_MaximumMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Maximum [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Property, Plant and Equipment, Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment By Type [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Property, Plant and Equipment, Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment Type [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_MarineEquipmentMember" xlink:type="locator" xlink:label="tdw_MarineEquipmentMember"/>
<label xml:lang="en-US" xlink:label="tdw_MarineEquipmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Marine Equipment [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_MarineEquipmentMember" xlink:to="tdw_MarineEquipmentMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_MarineEquipmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Marine Equipment </label>
<label xml:lang="en-US" xlink:label="tdw_MarineEquipmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Marine Equipment [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember" xlink:type="locator" xlink:label="us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other Property Plant and Equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember" xlink:to="us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Capitalized Property Plant And Equipment [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScenarioThreeMember" xlink:type="locator" xlink:label="tdw_ScenarioThreeMember"/>
<label xml:lang="en-US" xlink:label="tdw_ScenarioThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Scenario 3 [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScenarioThreeMember" xlink:to="tdw_ScenarioThreeMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScenarioThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> From Date of Construction </label>
<label xml:lang="en-US" xlink:label="tdw_ScenarioThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Scenario Three [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_StackedVesselsMember" xlink:type="locator" xlink:label="tdw_StackedVesselsMember"/>
<label xml:lang="en-US" xlink:label="tdw_StackedVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Stacked Vessels [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_StackedVesselsMember" xlink:to="tdw_StackedVesselsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_StackedVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Stacked Vessels </label>
<label xml:lang="en-US" xlink:label="tdw_StackedVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stacked Vessels [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Property, Plant and Equipment [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_PropertyPlantAndEquipmentLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_HighlyLiquidInvestmentsMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Highly liquid investments, maturities </label>
<label xml:lang="en-US" xlink:label="tdw_HighlyLiquidInvestmentsMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Highly Liquid Investments Maturity Period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of salvage values </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage" xlink:to="us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentSalvageValuePercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment Salvage Value Percentage </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Estimated useful lives, years </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:to="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment Useful Life </label>
<loc xlink:href="tdw-20171231.xsd#tdw_IncreaseOfAmortizationPeriod" xlink:type="locator" xlink:label="tdw_IncreaseOfAmortizationPeriod"/>
<label xml:lang="en-US" xlink:label="tdw_IncreaseOfAmortizationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Increase of amortization period. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncreaseOfAmortizationPeriod" xlink:to="tdw_IncreaseOfAmortizationPeriod_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_InspectionInterval" xlink:type="locator" xlink:label="tdw_InspectionInterval"/>
<label xml:lang="en-US" xlink:label="tdw_InspectionInterval_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Inspection Interval. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_InspectionInterval" xlink:to="tdw_InspectionInterval_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_IncreaseOfAmortizationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Extended useful life, months </label>
<label xml:lang="en-US" xlink:label="tdw_IncreaseOfAmortizationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Of Amortization Period </label>
<label xml:lang="en-US" xlink:label="tdw_InspectionInterval_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Inspection interval </label>
<label xml:lang="en-US" xlink:label="tdw_InspectionInterval_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Inspection Interval </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentAbstract" xlink:to="us-gaap_PropertyPlantAndEquipmentAbstract_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_VesselsInActiveServiceMember" xlink:type="locator" xlink:label="tdw_VesselsInActiveServiceMember"/>
<label xml:lang="en-US" xlink:label="tdw_VesselsInActiveServiceMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Vessels in Active Service [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_VesselsInActiveServiceMember" xlink:to="tdw_VesselsInActiveServiceMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_VesselsInActiveServiceMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Owned Vessels in Active Service </label>
<label xml:lang="en-US" xlink:label="tdw_VesselsInActiveServiceMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Vessels In Active Service [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_MarineEquipmentAndOtherAssetsUnderConstructionMember" xlink:type="locator" xlink:label="tdw_MarineEquipmentAndOtherAssetsUnderConstructionMember"/>
<label xml:lang="en-US" xlink:label="tdw_MarineEquipmentAndOtherAssetsUnderConstructionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Marine Equipment and Other Assets Under Construction [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_MarineEquipmentAndOtherAssetsUnderConstructionMember" xlink:to="tdw_MarineEquipmentAndOtherAssetsUnderConstructionMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_MarineEquipmentAndOtherAssetsUnderConstructionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Marine Equipment and Other Assets Under Construction </label>
<label xml:lang="en-US" xlink:label="tdw_MarineEquipmentAndOtherAssetsUnderConstructionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Marine Equipment And Other Assets Under Construction [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MachineryAndEquipmentGross" xlink:type="locator" xlink:label="us-gaap_MachineryAndEquipmentGross"/>
<label xml:lang="en-US" xlink:label="us-gaap_MachineryAndEquipmentGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Vessels and related equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MachineryAndEquipmentGross" xlink:to="us-gaap_MachineryAndEquipmentGross_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_MachineryAndEquipmentGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Machinery And Equipment Gross </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentOther" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentOther"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other properties and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentOther" xlink:to="us-gaap_PropertyPlantAndEquipmentOther_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment Other </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentGross"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Properties and equipment, gross </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentGross" xlink:to="us-gaap_PropertyPlantAndEquipmentGross_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment Gross </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Less accumulated depreciation and amortization </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accumulated Depreciation Depletion And Amortization Property Plant And Equipment </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfVessel" xlink:type="locator" xlink:label="tdw_NumberOfVessel"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVessel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of vessels. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfVessel" xlink:to="tdw_NumberOfVessel_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVessel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number Of Vessels </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVessel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Vessel </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfVehicles" xlink:type="locator" xlink:label="tdw_NumberOfVehicles"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVehicles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of Vehicles </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfVehicles" xlink:to="tdw_NumberOfVehicles_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfVehiclesSold" xlink:type="locator" xlink:label="tdw_NumberOfVehiclesSold"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVehiclesSold_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of vehicles sold. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfVehiclesSold" xlink:to="tdw_NumberOfVehiclesSold_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVehicles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of remotely operated vehicles </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVehicles_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Vehicles </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVehiclesSold_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of remotely operated vehicles sold </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVehiclesSold_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Vehicles Sold </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PropertyPlantAndEquipmentAverageAge" xlink:type="locator" xlink:label="tdw_PropertyPlantAndEquipmentAverageAge"/>
<label xml:lang="en-US" xlink:label="tdw_PropertyPlantAndEquipmentAverageAge_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Property plant and equipment average age. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PropertyPlantAndEquipmentAverageAge" xlink:to="tdw_PropertyPlantAndEquipmentAverageAge_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PropertyPlantAndEquipmentAverageAge_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Property plant and equipment average age </label>
<label xml:lang="en-US" xlink:label="tdw_PropertyPlantAndEquipmentAverageAge_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment Average Age </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PayablesAndAccrualsAbstract" xlink:type="locator" xlink:label="us-gaap_PayablesAndAccrualsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PayablesAndAccrualsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Payables And Accruals [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PayablesAndAccrualsAbstract" xlink:to="us-gaap_PayablesAndAccrualsAbstract_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfAccruedLiabilitiesLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfAccruedLiabilitiesLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfAccruedLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Accrued Liabilities [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfAccruedLiabilitiesLineItems" xlink:to="tdw_ScheduleOfAccruedLiabilitiesLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfAccruedLiabilitiesTable" xlink:type="locator" xlink:label="tdw_ScheduleOfAccruedLiabilitiesTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfAccruedLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Accrued Liabilities [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfAccruedLiabilitiesTable" xlink:to="tdw_ScheduleOfAccruedLiabilitiesTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfAccruedLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Accrued Liabilities [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfAccruedLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Accrued Liabilities [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:type="locator" xlink:label="us-gaap_BalanceSheetLocationAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Balance Sheet Location </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationAxis" xlink:to="us-gaap_BalanceSheetLocationAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Balance Sheet Location [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:type="locator" xlink:label="us-gaap_BalanceSheetLocationDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Balance Sheet Location </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationDomain" xlink:to="us-gaap_BalanceSheetLocationDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Balance Sheet Location [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AccruedLiabilitiesAndOtherLiabilitiesMember" xlink:type="locator" xlink:label="tdw_AccruedLiabilitiesAndOtherLiabilitiesMember"/>
<label xml:lang="en-US" xlink:label="tdw_AccruedLiabilitiesAndOtherLiabilitiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Accrued Liabilities And Other Liabilities [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AccruedLiabilitiesAndOtherLiabilitiesMember" xlink:to="tdw_AccruedLiabilitiesAndOtherLiabilitiesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AccruedLiabilitiesAndOtherLiabilitiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued property and liability losses </label>
<label xml:lang="en-US" xlink:label="tdw_AccruedLiabilitiesAndOtherLiabilitiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accrued Liabilities And Other Liabilities [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfAccruedLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Accrued Liabilities [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfAccruedLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Accrued Liabilities [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedLiabilitiesCurrentAndNoncurrent" xlink:type="locator" xlink:label="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued property and liability losses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent" xlink:to="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accrued Liabilities Current And Noncurrent </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfLeasedVessels" xlink:type="locator" xlink:label="tdw_NumberOfLeasedVessels"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfLeasedVessels_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of leased vessels. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfLeasedVessels" xlink:to="tdw_NumberOfLeasedVessels_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_BankruptcyClaimsPercentageOfCommonStockAndWarrantsToPurchaseCommonStockRepresentingCommonEquity" xlink:type="locator" xlink:label="tdw_BankruptcyClaimsPercentageOfCommonStockAndWarrantsToPurchaseCommonStockRepresentingCommonEquity"/>
<label xml:lang="en-US" xlink:label="tdw_BankruptcyClaimsPercentageOfCommonStockAndWarrantsToPurchaseCommonStockRepresentingCommonEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Bankruptcy claims percentage of common stock and warrants to purchase common stock representing common equity. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_BankruptcyClaimsPercentageOfCommonStockAndWarrantsToPurchaseCommonStockRepresentingCommonEquity" xlink:to="tdw_BankruptcyClaimsPercentageOfCommonStockAndWarrantsToPurchaseCommonStockRepresentingCommonEquity_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DebtInstrumentMaturityYear" xlink:type="locator" xlink:label="tdw_DebtInstrumentMaturityYear"/>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentMaturityYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Debt instrument maturity year. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DebtInstrumentMaturityYear" xlink:to="tdw_DebtInstrumentMaturityYear_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ReorganizationsLineItems" xlink:type="locator" xlink:label="tdw_ReorganizationsLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reorganizations. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReorganizationsLineItems" xlink:to="tdw_ReorganizationsLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ReorganizationsTable" xlink:type="locator" xlink:label="tdw_ReorganizationsTable"/>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reorganizations. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReorganizationsTable" xlink:to="tdw_ReorganizationsTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reorganizations [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reorganizations [Table] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_EightPointZeroZeroPercentNewSecuredNotesDueAugustTwoThousandTwentyTwoMember" xlink:type="locator" xlink:label="tdw_EightPointZeroZeroPercentNewSecuredNotesDueAugustTwoThousandTwentyTwoMember"/>
<label xml:lang="en-US" xlink:label="tdw_EightPointZeroZeroPercentNewSecuredNotesDueAugustTwoThousandTwentyTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Eight Point Zero Zero Percent New Secured Notes Due August Two Thousand Twenty Two </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_EightPointZeroZeroPercentNewSecuredNotesDueAugustTwoThousandTwentyTwoMember" xlink:to="tdw_EightPointZeroZeroPercentNewSecuredNotesDueAugustTwoThousandTwentyTwoMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_EightPointZeroZeroPercentNewSecuredNotesDueAugustTwoThousandTwentyTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 8.00% New Secured Notes Due August 2022 </label>
<label xml:lang="en-US" xlink:label="tdw_EightPointZeroZeroPercentNewSecuredNotesDueAugustTwoThousandTwentyTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Eight Point Zero Zero Percent New Secured Notes Due August Two Thousand Twenty Two [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementGeographicalAxis" xlink:type="locator" xlink:label="us-gaap_StatementGeographicalAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementGeographicalAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Geographical </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementGeographicalAxis" xlink:to="us-gaap_StatementGeographicalAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementGeographicalAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Statement Geographical [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:type="locator" xlink:label="us-gaap_SegmentGeographicalDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_SegmentGeographicalDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Geographical </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentGeographicalDomain" xlink:to="us-gaap_SegmentGeographicalDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SegmentGeographicalDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Segment Geographical [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NonUsMember" xlink:type="locator" xlink:label="us-gaap_NonUsMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_NonUsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Non-U.S. Citizens </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonUsMember" xlink:to="us-gaap_NonUsMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NonUsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Non Us [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_VestingAxis" xlink:type="locator" xlink:label="us-gaap_VestingAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_VestingAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Vesting </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VestingAxis" xlink:to="us-gaap_VestingAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_VestingAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Vesting [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_VestingDomain" xlink:type="locator" xlink:label="us-gaap_VestingDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_VestingDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Vesting </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VestingDomain" xlink:to="us-gaap_VestingDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_VestingDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Vesting [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationAwardTrancheOneMember" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Series A Warrants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationAwardTrancheOneMember" xlink:to="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Award Tranche One [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationAwardTrancheTwoMember" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Series B Warrants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationAwardTrancheTwoMember" xlink:to="us-gaap_ShareBasedCompensationAwardTrancheTwoMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Award Tranche Two [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfWarrantOrRightAxis" xlink:type="locator" xlink:label="us-gaap_ClassOfWarrantOrRightAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Class of Warrant or Right </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightAxis" xlink:to="us-gaap_ClassOfWarrantOrRightAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ClassOfWarrantOrRightAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Class Of Warrant Or Right [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfWarrantOrRightDomain" xlink:type="locator" xlink:label="us-gaap_ClassOfWarrantOrRightDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Class of Warrant or Right </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightDomain" xlink:to="us-gaap_ClassOfWarrantOrRightDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ClassOfWarrantOrRightDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Class Of Warrant Or Right [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NewCreditorWarrantMember" xlink:type="locator" xlink:label="tdw_NewCreditorWarrantMember"/>
<label xml:lang="en-US" xlink:label="tdw_NewCreditorWarrantMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> New creditor warrant. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NewCreditorWarrantMember" xlink:to="tdw_NewCreditorWarrantMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NewCreditorWarrantMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> New Creditor Warrant </label>
<label xml:lang="en-US" xlink:label="tdw_NewCreditorWarrantMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> New Creditor Warrant [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:type="locator" xlink:label="us-gaap_RestructuringPlanAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestructuringPlanAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restructuring Plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestructuringPlanAxis" xlink:to="us-gaap_RestructuringPlanAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestructuringPlanAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Restructuring Plan [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:type="locator" xlink:label="us-gaap_RestructuringPlanDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestructuringPlanDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restructuring Plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestructuringPlanDomain" xlink:to="us-gaap_RestructuringPlanDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestructuringPlanDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Restructuring Plan [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PlanOfReorganizationMember" xlink:type="locator" xlink:label="tdw_PlanOfReorganizationMember"/>
<label xml:lang="en-US" xlink:label="tdw_PlanOfReorganizationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Plan of reorganization. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PlanOfReorganizationMember" xlink:to="tdw_PlanOfReorganizationMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PlanOfReorganizationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Plan of Reorganization </label>
<label xml:lang="en-US" xlink:label="tdw_PlanOfReorganizationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Plan Of Reorganization [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reorganizations [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reorganizations [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfLeasedVessels_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of vessels leased </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfLeasedVessels_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Leased Vessels </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BankruptcyClaimsAmountPaidToSettleClaims" xlink:type="locator" xlink:label="us-gaap_BankruptcyClaimsAmountPaidToSettleClaims"/>
<label xml:lang="en-US" xlink:label="us-gaap_BankruptcyClaimsAmountPaidToSettleClaims_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Claims paid in cash </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BankruptcyClaimsAmountPaidToSettleClaims" xlink:to="us-gaap_BankruptcyClaimsAmountPaidToSettleClaims_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_BankruptcyClaimsAmountPaidToSettleClaims_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Bankruptcy Claims Amount Paid To Settle Claims </label>
<label xml:lang="en-US" xlink:label="tdw_BankruptcyClaimsPercentageOfCommonStockAndWarrantsToPurchaseCommonStockRepresentingCommonEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of common equity </label>
<label xml:lang="en-US" xlink:label="tdw_BankruptcyClaimsPercentageOfCommonStockAndWarrantsToPurchaseCommonStockRepresentingCommonEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Bankruptcy Claims Percentage Of Common Stock And Warrants To Purchase Common Stock Representing Common Equity </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtPercentageBearingFixedInterestRate" xlink:type="locator" xlink:label="us-gaap_LongTermDebtPercentageBearingFixedInterestRate"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtPercentageBearingFixedInterestRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument fixed interest rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtPercentageBearingFixedInterestRate" xlink:to="us-gaap_LongTermDebtPercentageBearingFixedInterestRate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtPercentageBearingFixedInterestRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Long Term Debt Percentage Bearing Fixed Interest Rate </label>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentMaturityYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument maturity year </label>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentMaturityYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Maturity Year </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentFaceAmount"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Aggregate principal amount </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Face Amount </label>
<loc xlink:href="tdw-20171231.xsd#tdw_BankruptcyClaimsPercentageOfCommonEquityIssuedToExistingStockholders" xlink:type="locator" xlink:label="tdw_BankruptcyClaimsPercentageOfCommonEquityIssuedToExistingStockholders"/>
<label xml:lang="en-US" xlink:label="tdw_BankruptcyClaimsPercentageOfCommonEquityIssuedToExistingStockholders_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Bankruptcy claims, percentage of common equity issued to existing stockholders. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_BankruptcyClaimsPercentageOfCommonEquityIssuedToExistingStockholders" xlink:to="tdw_BankruptcyClaimsPercentageOfCommonEquityIssuedToExistingStockholders_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PurchaseWarrantExercisePeriod" xlink:type="locator" xlink:label="tdw_PurchaseWarrantExercisePeriod"/>
<label xml:lang="en-US" xlink:label="tdw_PurchaseWarrantExercisePeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Purchase warrant exercise period. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PurchaseWarrantExercisePeriod" xlink:to="tdw_PurchaseWarrantExercisePeriod_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_BankruptcyClaimsPercentageOfCommonEquityIssuedToExistingStockholders_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Bankruptcy claims, percentage of common equity issued to existing stockholders </label>
<label xml:lang="en-US" xlink:label="tdw_BankruptcyClaimsPercentageOfCommonEquityIssuedToExistingStockholders_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Bankruptcy Claims Percentage Of Common Equity Issued To Existing Stockholders </label>
<label xml:lang="en-US" xlink:label="tdw_PurchaseWarrantExercisePeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Purchase warrant exercise period </label>
<label xml:lang="en-US" xlink:label="tdw_PurchaseWarrantExercisePeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Purchase Warrant Exercise Period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:type="locator" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights"/>
<label xml:lang="en-US" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Warrants issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:to="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Class Of Warrant Or Right Number Of Securities Called By Warrants Or Rights </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:type="locator" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1"/>
<label xml:lang="en-US" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Nominal exercise price of warrants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" xlink:to="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Class Of Warrant Or Right Exercise Price Of Warrants Or Rights1 </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:type="locator" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Ownership percentage of common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:to="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Method Investment Ownership Percentage </label>
<loc xlink:href="tdw-20171231.xsd#tdw_RemainderPeriodOneOfEmergenceConsiderationWithheldToBePaidMonthAndYear" xlink:type="locator" xlink:label="tdw_RemainderPeriodOneOfEmergenceConsiderationWithheldToBePaidMonthAndYear"/>
<label xml:lang="en-US" xlink:label="tdw_RemainderPeriodOneOfEmergenceConsiderationWithheldToBePaidMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Remainder period one of emergence consideration withheld to be paid month and year. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RemainderPeriodOneOfEmergenceConsiderationWithheldToBePaidMonthAndYear" xlink:to="tdw_RemainderPeriodOneOfEmergenceConsiderationWithheldToBePaidMonthAndYear_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_RemainderPeriodTwoOfEmergenceConsiderationWithheldToBePaidMonthAndYear" xlink:type="locator" xlink:label="tdw_RemainderPeriodTwoOfEmergenceConsiderationWithheldToBePaidMonthAndYear"/>
<label xml:lang="en-US" xlink:label="tdw_RemainderPeriodTwoOfEmergenceConsiderationWithheldToBePaidMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Remainder period two of emergence consideration withheld to be paid month and year. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RemainderPeriodTwoOfEmergenceConsiderationWithheldToBePaidMonthAndYear" xlink:to="tdw_RemainderPeriodTwoOfEmergenceConsiderationWithheldToBePaidMonthAndYear_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_SalesLeasebackPartiesSettlementAgreementDescription" xlink:type="locator" xlink:label="tdw_SalesLeasebackPartiesSettlementAgreementDescription"/>
<label xml:lang="en-US" xlink:label="tdw_SalesLeasebackPartiesSettlementAgreementDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Sales leaseback parties settlement agreement description. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SalesLeasebackPartiesSettlementAgreementDescription" xlink:to="tdw_SalesLeasebackPartiesSettlementAgreementDescription_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesSubjectToCompromiseCapitalLeaseObligationsAndAccruedInterest" xlink:type="locator" xlink:label="us-gaap_LiabilitiesSubjectToCompromiseCapitalLeaseObligationsAndAccruedInterest"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesSubjectToCompromiseCapitalLeaseObligationsAndAccruedInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional sale leaseback claims </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesSubjectToCompromiseCapitalLeaseObligationsAndAccruedInterest" xlink:to="us-gaap_LiabilitiesSubjectToCompromiseCapitalLeaseObligationsAndAccruedInterest_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesSubjectToCompromiseCapitalLeaseObligationsAndAccruedInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities Subject To Compromise Capital Lease Obligations And Accrued Interest </label>
<label xml:lang="en-US" xlink:label="tdw_SalesLeasebackPartiesSettlementAgreementDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Settlement agreement description </label>
<label xml:lang="en-US" xlink:label="tdw_SalesLeasebackPartiesSettlementAgreementDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sales Leaseback Parties Settlement Agreement Description </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BankruptcyClaimsAmountOfClaimsSettled" xlink:type="locator" xlink:label="us-gaap_BankruptcyClaimsAmountOfClaimsSettled"/>
<label xml:lang="en-US" xlink:label="us-gaap_BankruptcyClaimsAmountOfClaimsSettled_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Claims settled amount </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BankruptcyClaimsAmountOfClaimsSettled" xlink:to="us-gaap_BankruptcyClaimsAmountOfClaimsSettled_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_BankruptcyClaimsAmountOfClaimsSettled_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Bankruptcy Claims Amount Of Claims Settled </label>
<label xml:lang="en-US" xlink:label="tdw_RemainderPeriodOneOfEmergenceConsiderationWithheldToBePaidMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Remainder period one of emergence consideration withheld to be paid month and year </label>
<label xml:lang="en-US" xlink:label="tdw_RemainderPeriodOneOfEmergenceConsiderationWithheldToBePaidMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Remainder Period One Of Emergence Consideration Withheld To Be Paid Month And Year </label>
<label xml:lang="en-US" xlink:label="tdw_RemainderPeriodTwoOfEmergenceConsiderationWithheldToBePaidMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Remainder period two of emergence consideration withheld to be paid month and year </label>
<label xml:lang="en-US" xlink:label="tdw_RemainderPeriodTwoOfEmergenceConsiderationWithheldToBePaidMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Remainder Period Two Of Emergence Consideration Withheld To Be Paid Month And Year </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PredecessorShareholdersPercentageOfVotingSharesOfSuccessorEntity" xlink:type="locator" xlink:label="tdw_PredecessorShareholdersPercentageOfVotingSharesOfSuccessorEntity"/>
<label xml:lang="en-US" xlink:label="tdw_PredecessorShareholdersPercentageOfVotingSharesOfSuccessorEntity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Predecessor shareholders percentage of voting shares of successor entity. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PredecessorShareholdersPercentageOfVotingSharesOfSuccessorEntity" xlink:to="tdw_PredecessorShareholdersPercentageOfVotingSharesOfSuccessorEntity_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAccountingLineItems" xlink:type="locator" xlink:label="tdw_FreshStartAccountingLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start accounting. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAccountingLineItems" xlink:to="tdw_FreshStartAccountingLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAccountingTable" xlink:type="locator" xlink:label="tdw_FreshStartAccountingTable"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start accounting. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAccountingTable" xlink:to="tdw_FreshStartAccountingTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh Start Accounting [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Accounting [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh Start Accounting [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Accounting [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentDescription" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentDescription"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh start adjustment, description </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentDescription" xlink:to="us-gaap_FreshStartAdjustmentDescription_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Description </label>
<label xml:lang="en-US" xlink:label="tdw_PredecessorShareholdersPercentageOfVotingSharesOfSuccessorEntity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Predecessor shareholders percentage of voting shares of successor entity </label>
<label xml:lang="en-US" xlink:label="tdw_PredecessorShareholdersPercentageOfVotingSharesOfSuccessorEntity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Predecessor Shareholders Percentage Of Voting Shares Of Successor Entity </label>
<loc xlink:href="tdw-20171231.xsd#tdw_EnterpriseValueForDerivingEquityValue" xlink:type="locator" xlink:label="tdw_EnterpriseValueForDerivingEquityValue"/>
<label xml:lang="en-US" xlink:label="tdw_EnterpriseValueForDerivingEquityValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Enterprise value for deriving equity value. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_EnterpriseValueForDerivingEquityValue" xlink:to="tdw_EnterpriseValueForDerivingEquityValue_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReorganizationValue" xlink:type="locator" xlink:label="us-gaap_ReorganizationValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReorganizationValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Enterprise value of successor entity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReorganizationValue" xlink:to="us-gaap_ReorganizationValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReorganizationValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reorganization Value </label>
<label xml:lang="en-US" xlink:label="tdw_EnterpriseValueForDerivingEquityValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Enterprise value for deriving equity value </label>
<label xml:lang="en-US" xlink:label="tdw_EnterpriseValueForDerivingEquityValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Enterprise Value For Deriving Equity Value </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PercentageOfWeightedAverageCostOfCapital" xlink:type="locator" xlink:label="tdw_PercentageOfWeightedAverageCostOfCapital"/>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfWeightedAverageCostOfCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Percentage of weighted average cost of capital. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PercentageOfWeightedAverageCostOfCapital" xlink:to="tdw_PercentageOfWeightedAverageCostOfCapital_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfWeightedAverageCostOfCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of weighted average cost of capital </label>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfWeightedAverageCostOfCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Percentage Of Weighted Average Cost Of Capital </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationFairValueOfNewCreditorAndWarrants" xlink:type="locator" xlink:label="tdw_PostconfirmationFairValueOfNewCreditorAndWarrants"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationFairValueOfNewCreditorAndWarrants_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation Fair Value Of New Creditor And warrants. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationFairValueOfNewCreditorAndWarrants" xlink:to="tdw_PostconfirmationFairValueOfNewCreditorAndWarrants_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationFairValueOfNoncontrollingInterests" xlink:type="locator" xlink:label="tdw_PostconfirmationFairValueOfNoncontrollingInterests"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationFairValueOfNoncontrollingInterests_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation Fair Value Of Noncontrolling Interests. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationFairValueOfNoncontrollingInterests" xlink:to="tdw_PostconfirmationFairValueOfNoncontrollingInterests_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReorganizationValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Enterprise Value </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationCashAndCashEquivalents" xlink:type="locator" xlink:label="us-gaap_PostconfirmationCashAndCashEquivalents"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCashAndCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Add: Cash and cash equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationCashAndCashEquivalents" xlink:to="us-gaap_PostconfirmationCashAndCashEquivalents_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCashAndCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Cash And Cash Equivalents </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationAccountsPayable" xlink:type="locator" xlink:label="us-gaap_PostconfirmationAccountsPayable"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAccountsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Less: Amounts due to General Unsecured Creditors </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationAccountsPayable" xlink:to="us-gaap_PostconfirmationAccountsPayable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAccountsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Accounts Payable </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationLongTermDebt" xlink:type="locator" xlink:label="us-gaap_PostconfirmationLongTermDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Less: Fair value of debt </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationLongTermDebt" xlink:to="us-gaap_PostconfirmationLongTermDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Long Term Debt </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationFairValueOfNewCreditorAndWarrants_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Less: Fair value of New Creditor, Series A and B warrants </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationFairValueOfNewCreditorAndWarrants_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Fair Value Of New Creditor And Warrants </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationFairValueOfNoncontrollingInterests_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Less: Fair value of noncontrolling interests </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationFairValueOfNoncontrollingInterests_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Fair Value Of Noncontrolling Interests </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationCommonStock" xlink:type="locator" xlink:label="us-gaap_PostconfirmationCommonStock"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Fair Value of Successor common stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationCommonStock" xlink:to="us-gaap_PostconfirmationCommonStock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Common Stock </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationCurrentLiabilities" xlink:type="locator" xlink:label="us-gaap_PostconfirmationCurrentLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Add: Other working capital liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationCurrentLiabilities" xlink:to="us-gaap_PostconfirmationCurrentLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Current Liabilities </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationAssets" xlink:type="locator" xlink:label="us-gaap_PostconfirmationAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total value of Successor assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationAssets" xlink:to="us-gaap_PostconfirmationAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Assets </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationCommitmentsAndContingencies" xlink:type="locator" xlink:label="tdw_PostconfirmationCommitmentsAndContingencies"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationCommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation commitments and contingencies. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationCommitmentsAndContingencies" xlink:to="tdw_PostconfirmationCommitmentsAndContingencies_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="tdw_PostconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation stockholders equity including portion attributable to noncontrolling interest. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="tdw_PostconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationMinorityInterest" xlink:type="locator" xlink:label="tdw_PostconfirmationMinorityInterest"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationMinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation minority interest. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationMinorityInterest" xlink:to="tdw_PostconfirmationMinorityInterest_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationAccruedPropertyAndLiabilityLosses" xlink:type="locator" xlink:label="tdw_PostconfirmationAccruedPropertyAndLiabilityLosses"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation accrued property and liability losses. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationAccruedPropertyAndLiabilityLosses" xlink:to="tdw_PostconfirmationAccruedPropertyAndLiabilityLosses_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationDueToAffiliateCurrent" xlink:type="locator" xlink:label="tdw_PostconfirmationDueToAffiliateCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationDueToAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation due to affiliate current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationDueToAffiliateCurrent" xlink:to="tdw_PostconfirmationDueToAffiliateCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationAccruedPropertyAndLiabilityLossesCurrent" xlink:type="locator" xlink:label="tdw_PostconfirmationAccruedPropertyAndLiabilityLossesCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationAccruedPropertyAndLiabilityLossesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation accrued property and liability losses current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationAccruedPropertyAndLiabilityLossesCurrent" xlink:to="tdw_PostconfirmationAccruedPropertyAndLiabilityLossesCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationDueFromAffiliateCurrent" xlink:type="locator" xlink:label="tdw_PostconfirmationDueFromAffiliateCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationDueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation due from affiliate current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationDueFromAffiliateCurrent" xlink:to="tdw_PostconfirmationDueFromAffiliateCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PostconfirmationMarineOperatingSuppliesCurrent" xlink:type="locator" xlink:label="tdw_PostconfirmationMarineOperatingSuppliesCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationMarineOperatingSuppliesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postconfirmation marine operating supplies current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostconfirmationMarineOperatingSuppliesCurrent" xlink:to="tdw_PostconfirmationMarineOperatingSuppliesCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustment increase decrease stockholders equity including portion attributable to noncontrolling interest. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:to="tdw_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentIncreaseDecreaseMinorityInterest" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseMinorityInterest"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseMinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustment increase decrease minority interest. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentIncreaseDecreaseMinorityInterest" xlink:to="tdw_FreshStartAdjustmentIncreaseDecreaseMinorityInterest_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLosses" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLosses"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustment increase decrease accrued property and liability losses. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLosses" xlink:to="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLosses_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentIncreaseDecreaseDueToAffiliateCurrent" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseDueToAffiliateCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseDueToAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustment increase decrease due to affiliate current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentIncreaseDecreaseDueToAffiliateCurrent" xlink:to="tdw_FreshStartAdjustmentIncreaseDecreaseDueToAffiliateCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLossesCurrent" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLossesCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLossesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustment increase decrease accrued property and liability losses current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLossesCurrent" xlink:to="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLossesCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentIncreaseDecreaseDueFromAffiliateCurrent" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseDueFromAffiliateCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseDueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustment increase decrease due from affiliate current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentIncreaseDecreaseDueFromAffiliateCurrent" xlink:to="tdw_FreshStartAdjustmentIncreaseDecreaseDueFromAffiliateCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentIncreaseDecreaseMarineOperatingSuppliesCurrent" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseMarineOperatingSuppliesCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseMarineOperatingSuppliesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustment increase decrease marine operating supplies current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentIncreaseDecreaseMarineOperatingSuppliesCurrent" xlink:to="tdw_FreshStartAdjustmentIncreaseDecreaseMarineOperatingSuppliesCurrent_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentsTable" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentsTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh Start Adjustments [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentsTable" xlink:to="us-gaap_FreshStartAdjustmentsTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustments [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioAdjustmentMember" xlink:type="locator" xlink:label="us-gaap_ScenarioAdjustmentMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScenarioAdjustmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reorganization Adjustments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScenarioAdjustmentMember" xlink:to="us-gaap_ScenarioAdjustmentMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScenarioAdjustmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Scenario Adjustment [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SuccessorMember" xlink:type="locator" xlink:label="us-gaap_SuccessorMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_SuccessorMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Successor </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SuccessorMember" xlink:to="us-gaap_SuccessorMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SuccessorMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Successor [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentLineItems" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh Start Adjustment [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentLineItems" xlink:to="us-gaap_FreshStartAdjustmentLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationAssetsAbstract" xlink:type="locator" xlink:label="us-gaap_PreconfirmationAssetsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> ASSETS </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationAssetsAbstract" xlink:to="us-gaap_PreconfirmationAssetsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Assets [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationCurrentAssetsAbstract" xlink:type="locator" xlink:label="us-gaap_PreconfirmationCurrentAssetsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCurrentAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationCurrentAssetsAbstract" xlink:to="us-gaap_PreconfirmationCurrentAssetsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCurrentAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Current Assets [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationCashAndCashEquivalents" xlink:type="locator" xlink:label="us-gaap_PreconfirmationCashAndCashEquivalents"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCashAndCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash and cash equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationCashAndCashEquivalents" xlink:to="us-gaap_PreconfirmationCashAndCashEquivalents_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCashAndCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Cash And Cash Equivalents </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationReceivablesNet" xlink:type="locator" xlink:label="us-gaap_PreconfirmationReceivablesNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationReceivablesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Trade and other receivables, net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationReceivablesNet" xlink:to="us-gaap_PreconfirmationReceivablesNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationReceivablesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Receivables Net </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationDueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Due from affiliate </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationDueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Due From Affiliate Current </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationMarineOperatingSuppliesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Marine operating supplies </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationMarineOperatingSuppliesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Marine Operating Supplies Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationPrepaidAndOtherCurrentAssets" xlink:type="locator" xlink:label="us-gaap_PreconfirmationPrepaidAndOtherCurrentAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationPrepaidAndOtherCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationPrepaidAndOtherCurrentAssets" xlink:to="us-gaap_PreconfirmationPrepaidAndOtherCurrentAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationPrepaidAndOtherCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Prepaid And Other Current Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationCurrentAssets" xlink:type="locator" xlink:label="us-gaap_PreconfirmationCurrentAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationCurrentAssets" xlink:to="us-gaap_PreconfirmationCurrentAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Current Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationInvestments" xlink:type="locator" xlink:label="us-gaap_PreconfirmationInvestments"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investments in, at equity, and advances to unconsolidated companies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationInvestments" xlink:to="us-gaap_PreconfirmationInvestments_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Investments </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationPropertyAndEquipmentNet" xlink:type="locator" xlink:label="us-gaap_PreconfirmationPropertyAndEquipmentNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationPropertyAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net properties and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationPropertyAndEquipmentNet" xlink:to="us-gaap_PreconfirmationPropertyAndEquipmentNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationPropertyAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Property And Equipment Net </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationOtherAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_PreconfirmationOtherAssetsNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationOtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationOtherAssetsNoncurrent" xlink:to="us-gaap_PreconfirmationOtherAssetsNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationOtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Other Assets Noncurrent </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationAssets" xlink:type="locator" xlink:label="us-gaap_PreconfirmationAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationAssets" xlink:to="us-gaap_PreconfirmationAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationLiabilitiesAndStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_PreconfirmationLiabilitiesAndStockholdersEquityAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> LIABILITIES AND EQUITY </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationLiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_PreconfirmationLiabilitiesAndStockholdersEquityAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Liabilities And Stockholders Equity [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationLiabilitiesAbstract" xlink:type="locator" xlink:label="us-gaap_PreconfirmationLiabilitiesAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationLiabilitiesAbstract" xlink:to="us-gaap_PreconfirmationLiabilitiesAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Liabilities [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationAccountsPayable" xlink:type="locator" xlink:label="us-gaap_PreconfirmationAccountsPayable"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAccountsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accounts payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationAccountsPayable" xlink:to="us-gaap_PreconfirmationAccountsPayable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAccountsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Accounts Payable </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationAccruedLiabilities" xlink:type="locator" xlink:label="us-gaap_PreconfirmationAccruedLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationAccruedLiabilities" xlink:to="us-gaap_PreconfirmationAccruedLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Accrued Liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationDueToAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Due to affiliate </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationDueToAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Due To Affiliate Current </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationAccruedPropertyAndLiabilityLossesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued property and liability losses </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationAccruedPropertyAndLiabilityLossesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Accrued Property And Liability Losses Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationCurrentMaturitiesOfLongTermDebt" xlink:type="locator" xlink:label="us-gaap_PreconfirmationCurrentMaturitiesOfLongTermDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCurrentMaturitiesOfLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current portion of long-term debt </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationCurrentMaturitiesOfLongTermDebt" xlink:to="us-gaap_PreconfirmationCurrentMaturitiesOfLongTermDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCurrentMaturitiesOfLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Current Maturities Of Long Term Debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationOtherCurrentLiabilities" xlink:type="locator" xlink:label="us-gaap_PreconfirmationOtherCurrentLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationOtherCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationOtherCurrentLiabilities" xlink:to="us-gaap_PreconfirmationOtherCurrentLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationOtherCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Other Current Liabilities </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationCurrentLiabilities" xlink:type="locator" xlink:label="us-gaap_PreconfirmationCurrentLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationCurrentLiabilities" xlink:to="us-gaap_PreconfirmationCurrentLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Current Liabilities </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationLongTermDebt" xlink:type="locator" xlink:label="us-gaap_PreconfirmationLongTermDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Long-term debt </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationLongTermDebt" xlink:to="us-gaap_PreconfirmationLongTermDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Long Term Debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationDeferredIncomeTaxLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_PreconfirmationDeferredIncomeTaxLiabilitiesNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationDeferredIncomeTaxLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred income taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationDeferredIncomeTaxLiabilitiesNoncurrent" xlink:to="us-gaap_PreconfirmationDeferredIncomeTaxLiabilitiesNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationDeferredIncomeTaxLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Deferred Income Tax Liabilities Noncurrent </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued property and liability losses </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Accrued Property And Liability Losses </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationOtherNoncurrentObligations" xlink:type="locator" xlink:label="us-gaap_PreconfirmationOtherNoncurrentObligations"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationOtherNoncurrentObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other liabilities and deferred credits </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationOtherNoncurrentObligations" xlink:to="us-gaap_PreconfirmationOtherNoncurrentObligations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationOtherNoncurrentObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Other Noncurrent Obligations </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationLiabilitiesSubjectToCompromise" xlink:type="locator" xlink:label="us-gaap_PreconfirmationLiabilitiesSubjectToCompromise"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLiabilitiesSubjectToCompromise_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Liabilities subject to compromise </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationLiabilitiesSubjectToCompromise" xlink:to="us-gaap_PreconfirmationLiabilitiesSubjectToCompromise_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLiabilitiesSubjectToCompromise_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Liabilities Subject To Compromise </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationLiabilities" xlink:type="locator" xlink:label="us-gaap_PreconfirmationLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationLiabilities" xlink:to="us-gaap_PreconfirmationLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationCommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Commitments and Contingencies </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationCommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Commitments And Contingencies </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_PreconfirmationStockholdersEquityAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationStockholdersEquityAbstract" xlink:to="us-gaap_PreconfirmationStockholdersEquityAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Stockholders Equity [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationCommonStock" xlink:type="locator" xlink:label="us-gaap_PreconfirmationCommonStock"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock (Predecessor) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationCommonStock" xlink:to="us-gaap_PreconfirmationCommonStock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Common Stock </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationAdditionalPaidInCapital" xlink:type="locator" xlink:label="us-gaap_PreconfirmationAdditionalPaidInCapital"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional paid-in capital (Predecessor) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationAdditionalPaidInCapital" xlink:to="us-gaap_PreconfirmationAdditionalPaidInCapital_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Additional Paid In Capital </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationRetainedEarningsDeficit" xlink:type="locator" xlink:label="us-gaap_PreconfirmationRetainedEarningsDeficit"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationRetainedEarningsDeficit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retained earnings </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationRetainedEarningsDeficit" xlink:to="us-gaap_PreconfirmationRetainedEarningsDeficit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationRetainedEarningsDeficit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Retained Earnings Deficit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationAccumulatedOtherComprehensiveIncomeLoss" xlink:type="locator" xlink:label="us-gaap_PreconfirmationAccumulatedOtherComprehensiveIncomeLoss"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAccumulatedOtherComprehensiveIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accumulated other comprehensive loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationAccumulatedOtherComprehensiveIncomeLoss" xlink:to="us-gaap_PreconfirmationAccumulatedOtherComprehensiveIncomeLoss_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationAccumulatedOtherComprehensiveIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Accumulated Other Comprehensive Income Loss </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_PreconfirmationStockholdersEquity"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total stockholders' equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationStockholdersEquity" xlink:to="us-gaap_PreconfirmationStockholdersEquity_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Stockholders Equity </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationMinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Noncontrolling interests </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationMinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Minority Interest </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total equity </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Stockholders Equity Including Portion Attributable To Noncontrolling Interest </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreconfirmationLiabilitiesAndStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_PreconfirmationLiabilitiesAndStockholdersEquity"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLiabilitiesAndStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total liabilities and equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreconfirmationLiabilitiesAndStockholdersEquity" xlink:to="us-gaap_PreconfirmationLiabilitiesAndStockholdersEquity_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationLiabilitiesAndStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Liabilities And Stockholders Equity </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationReorganizationAdjustmentCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock (Predecessor) </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationReorganizationAdjustmentCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Reorganization Adjustment Common Stock </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationReorganizationAdjustmentAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional paid-in capital (Predecessor) </label>
<label xml:lang="en-US" xlink:label="tdw_PreconfirmationReorganizationAdjustmentAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preconfirmation Reorganization Adjustment Additional Paid In Capital </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationReorganizationAdjustmentCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock (Successor) </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationReorganizationAdjustmentCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Reorganization Adjustment Common Stock </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationReorganizationAdjustmentAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional paid-in capital (Successor) </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationReorganizationAdjustmentAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Reorganization Adjustment Additional Paid In Capital </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentIncreaseDecreaseCommitmentsAndContingencies" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseCommitmentsAndContingencies"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseCommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustment increase decrease commitments and contingencies. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentIncreaseDecreaseCommitmentsAndContingencies" xlink:to="tdw_FreshStartAdjustmentIncreaseDecreaseCommitmentsAndContingencies_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseAssetsAbstract" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAssetsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> ASSETS </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseAssetsAbstract" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseAssetsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Assets [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssetsAbstract" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssetsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssetsAbstract" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssetsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Current Assets [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseCashAndCashEquivalents" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCashAndCashEquivalents"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCashAndCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash and cash equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseCashAndCashEquivalents" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseCashAndCashEquivalents_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCashAndCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Cash And Cash Equivalents </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseReceivablesNet" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseReceivablesNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseReceivablesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Trade and other receivables, net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseReceivablesNet" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseReceivablesNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseReceivablesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Receivables Net </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseDueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Due from affiliate </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseDueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Due From Affiliate Current </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseMarineOperatingSuppliesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Marine operating supplies </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseMarineOperatingSuppliesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Marine Operating Supplies Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreasePrepaidAndOtherCurrentAssets" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreasePrepaidAndOtherCurrentAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreasePrepaidAndOtherCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreasePrepaidAndOtherCurrentAssets" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreasePrepaidAndOtherCurrentAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreasePrepaidAndOtherCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Prepaid And Other Current Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssets" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssets" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Current Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseInvestments" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseInvestments"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investments in, at equity, and advances to unconsolidated companies </label>
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<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Investments </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNet" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net properties and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNet" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Property And Equipment Net </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherAssetsNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherAssetsNoncurrent" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherAssetsNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Other Assets Noncurrent </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseAssets" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseAssets" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquityAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> LIABILITIES AND EQUITY </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquityAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Liabilities And Stockholders Equity [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilitiesAbstract" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilitiesAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilitiesAbstract" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilitiesAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Current Liabilities [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseAccountsPayable" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccountsPayable"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccountsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accounts payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccountsPayable" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccountsPayable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccountsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Accounts Payable </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseAccruedLiabilities" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccruedLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccruedLiabilities" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccruedLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Accrued Liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseDueToAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Due to affiliate </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseDueToAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Due To Affiliate Current </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLossesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued property and liability losses </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLossesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Accrued Property And Liability Losses Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentMaturitiesOfLongTermDebt" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentMaturitiesOfLongTermDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentMaturitiesOfLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current portion of long-term debt </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentMaturitiesOfLongTermDebt" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentMaturitiesOfLongTermDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentMaturitiesOfLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Current Maturities Of Long Term Debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherCurrentLiabilities" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherCurrentLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherCurrentLiabilities" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherCurrentLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Other Current Liabilities </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilities" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilities" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Current Liabilities </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseLongTermDebt" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLongTermDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Long-term debt </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseLongTermDebt" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseLongTermDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Long Term Debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred income taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesNoncurrent" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Deferred Income Tax Liabilities Noncurrent </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued property and liability losses </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Accrued Property And Liability Losses </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligations" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligations"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other liabilities and deferred credits </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligations" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Other Noncurrent Obligations </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesSubjectToCompromise" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesSubjectToCompromise"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesSubjectToCompromise_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Liabilities subject to compromise </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesSubjectToCompromise" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesSubjectToCompromise_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesSubjectToCompromise_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Liabilities Subject To Compromise </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilities" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilities" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseCommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Commitments and Contingencies </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseCommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Commitments And Contingencies </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityAbstract" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Stockholders Equity [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseCommonStock" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCommonStock"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock (Successor) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseCommonStock" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseCommonStock_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Common Stock </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseAdditionalPaidInCapital" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAdditionalPaidInCapital"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional paid-in capital (Successor) </label>
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<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Additional Paid In Capital </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retained earnings </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Retained Earnings Deficit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseAccumulatedOtherComprehensiveIncomeLoss" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccumulatedOtherComprehensiveIncomeLoss"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccumulatedOtherComprehensiveIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accumulated other comprehensive loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccumulatedOtherComprehensiveIncomeLoss" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccumulatedOtherComprehensiveIncomeLoss_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseAccumulatedOtherComprehensiveIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Accumulated Other Comprehensive Income Loss </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquity"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total stockholders' equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquity" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquity_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Stockholders Equity </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseMinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Noncontrolling interests </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseMinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Minority Interest </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total equity </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Stockholders Equity Including Portion Attributable To Noncontrolling Interest </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total liabilities and equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Liabilities And Stockholders Equity </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationAssetsAbstract" xlink:type="locator" xlink:label="us-gaap_PostconfirmationAssetsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> ASSETS </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationAssetsAbstract" xlink:to="us-gaap_PostconfirmationAssetsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Assets [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationCurrentAssetsAbstract" xlink:type="locator" xlink:label="us-gaap_PostconfirmationCurrentAssetsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCurrentAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationCurrentAssetsAbstract" xlink:to="us-gaap_PostconfirmationCurrentAssetsAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCurrentAssetsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Current Assets [Abstract] </label>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCashAndCashEquivalents_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Cash and cash equivalents </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationReceivablesNet" xlink:type="locator" xlink:label="us-gaap_PostconfirmationReceivablesNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationReceivablesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Trade and other receivables, net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationReceivablesNet" xlink:to="us-gaap_PostconfirmationReceivablesNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationReceivablesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Receivables Net </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationDueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Due from affiliate </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationDueFromAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Due From Affiliate Current </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationMarineOperatingSuppliesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Marine operating supplies </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationMarineOperatingSuppliesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Marine Operating Supplies Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationPrepaidAndOtherCurrentAssets" xlink:type="locator" xlink:label="us-gaap_PostconfirmationPrepaidAndOtherCurrentAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationPrepaidAndOtherCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationPrepaidAndOtherCurrentAssets" xlink:to="us-gaap_PostconfirmationPrepaidAndOtherCurrentAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationPrepaidAndOtherCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Prepaid And Other Current Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationCurrentAssets" xlink:type="locator" xlink:label="us-gaap_PostconfirmationCurrentAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total current assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationCurrentAssets" xlink:to="us-gaap_PostconfirmationCurrentAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCurrentAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Current Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationInvestments" xlink:type="locator" xlink:label="us-gaap_PostconfirmationInvestments"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investments in, at equity, and advances to unconsolidated companies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationInvestments" xlink:to="us-gaap_PostconfirmationInvestments_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Investments </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationPropertyAndEquipmentNet" xlink:type="locator" xlink:label="us-gaap_PostconfirmationPropertyAndEquipmentNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationPropertyAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net properties and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationPropertyAndEquipmentNet" xlink:to="us-gaap_PostconfirmationPropertyAndEquipmentNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationPropertyAndEquipmentNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Property And Equipment Net </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationOtherAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_PostconfirmationOtherAssetsNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationOtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationOtherAssetsNoncurrent" xlink:to="us-gaap_PostconfirmationOtherAssetsNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationOtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Other Assets Noncurrent </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationLiabilitiesAndStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_PostconfirmationLiabilitiesAndStockholdersEquityAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationLiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> LIABILITIES AND EQUITY </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationLiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_PostconfirmationLiabilitiesAndStockholdersEquityAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationLiabilitiesAndStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Liabilities And Stockholders Equity [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationCurrentLiabilitiesAbstract" xlink:type="locator" xlink:label="us-gaap_PostconfirmationCurrentLiabilitiesAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCurrentLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationCurrentLiabilitiesAbstract" xlink:to="us-gaap_PostconfirmationCurrentLiabilitiesAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCurrentLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Current Liabilities [Abstract] </label>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAccountsPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accounts payable </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationAccruedLiabilities" xlink:type="locator" xlink:label="us-gaap_PostconfirmationAccruedLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationAccruedLiabilities" xlink:to="us-gaap_PostconfirmationAccruedLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAccruedLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Accrued Liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationDueToAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Due to affiliate </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationDueToAffiliateCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Due To Affiliate Current </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationAccruedPropertyAndLiabilityLossesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued property and liability losses </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationAccruedPropertyAndLiabilityLossesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Accrued Property And Liability Losses Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationCurrentMaturitiesOfLongTermDebt" xlink:type="locator" xlink:label="us-gaap_PostconfirmationCurrentMaturitiesOfLongTermDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCurrentMaturitiesOfLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current portion of long-term debt </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationCurrentMaturitiesOfLongTermDebt" xlink:to="us-gaap_PostconfirmationCurrentMaturitiesOfLongTermDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCurrentMaturitiesOfLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Current Maturities Of Long Term Debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationOtherCurrentLiabilities" xlink:type="locator" xlink:label="us-gaap_PostconfirmationOtherCurrentLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationOtherCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Other current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationOtherCurrentLiabilities" xlink:to="us-gaap_PostconfirmationOtherCurrentLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationOtherCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Other Current Liabilities </label>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total current liabilities </label>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Long-term debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationDeferredIncomeTaxLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_PostconfirmationDeferredIncomeTaxLiabilitiesNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationDeferredIncomeTaxLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred income taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationDeferredIncomeTaxLiabilitiesNoncurrent" xlink:to="us-gaap_PostconfirmationDeferredIncomeTaxLiabilitiesNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationDeferredIncomeTaxLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Deferred Income Tax Liabilities Noncurrent </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued property and liability losses </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationAccruedPropertyAndLiabilityLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Accrued Property And Liability Losses </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationOtherNoncurrentObligations" xlink:type="locator" xlink:label="us-gaap_PostconfirmationOtherNoncurrentObligations"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationOtherNoncurrentObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other liabilities and deferred credits </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationOtherNoncurrentObligations" xlink:to="us-gaap_PostconfirmationOtherNoncurrentObligations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationOtherNoncurrentObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Other Noncurrent Obligations </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationLiabilitiesSubjectToCompromise" xlink:type="locator" xlink:label="us-gaap_PostconfirmationLiabilitiesSubjectToCompromise"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationLiabilitiesSubjectToCompromise_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Liabilities subject to compromise </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationLiabilitiesSubjectToCompromise" xlink:to="us-gaap_PostconfirmationLiabilitiesSubjectToCompromise_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationLiabilitiesSubjectToCompromise_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Liabilities Subject To Compromise </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationLiabilities" xlink:type="locator" xlink:label="us-gaap_PostconfirmationLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationLiabilities" xlink:to="us-gaap_PostconfirmationLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationCommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Commitments and Contingencies </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationCommitmentsAndContingencies_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Commitments And Contingencies </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_PostconfirmationStockholdersEquityAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity: </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationStockholdersEquityAbstract" xlink:to="us-gaap_PostconfirmationStockholdersEquityAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationStockholdersEquityAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Stockholders Equity [Abstract] </label>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Common stock (Successor) </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationAdditionalPaidInCapital" xlink:type="locator" xlink:label="us-gaap_PostconfirmationAdditionalPaidInCapital"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional paid-in capital (Successor) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationAdditionalPaidInCapital" xlink:to="us-gaap_PostconfirmationAdditionalPaidInCapital_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAdditionalPaidInCapital_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Additional Paid In Capital </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationRetainedEarningsDeficit" xlink:type="locator" xlink:label="us-gaap_PostconfirmationRetainedEarningsDeficit"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationRetainedEarningsDeficit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retained earnings </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationRetainedEarningsDeficit" xlink:to="us-gaap_PostconfirmationRetainedEarningsDeficit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationRetainedEarningsDeficit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Retained Earnings Deficit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationAccumulatedOtherComprehensiveIncomeLoss" xlink:type="locator" xlink:label="us-gaap_PostconfirmationAccumulatedOtherComprehensiveIncomeLoss"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAccumulatedOtherComprehensiveIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accumulated other comprehensive loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationAccumulatedOtherComprehensiveIncomeLoss" xlink:to="us-gaap_PostconfirmationAccumulatedOtherComprehensiveIncomeLoss_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationAccumulatedOtherComprehensiveIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Accumulated Other Comprehensive Income Loss </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_PostconfirmationStockholdersEquity"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total stockholders' equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationStockholdersEquity" xlink:to="us-gaap_PostconfirmationStockholdersEquity_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Stockholders Equity </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationMinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Noncontrolling interests </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationMinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Minority Interest </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total equity </label>
<label xml:lang="en-US" xlink:label="tdw_PostconfirmationStockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Stockholders Equity Including Portion Attributable To Noncontrolling Interest </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationLiabilitiesAndStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_PostconfirmationLiabilitiesAndStockholdersEquity"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationLiabilitiesAndStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total liabilities and equity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationLiabilitiesAndStockholdersEquity" xlink:to="us-gaap_PostconfirmationLiabilitiesAndStockholdersEquity_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationLiabilitiesAndStockholdersEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Liabilities And Stockholders Equity </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FundingOfGeneralUnsecuredClaimsDistributionAccount" xlink:type="locator" xlink:label="tdw_FundingOfGeneralUnsecuredClaimsDistributionAccount"/>
<label xml:lang="en-US" xlink:label="tdw_FundingOfGeneralUnsecuredClaimsDistributionAccount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Funding of the general unsecured claims distribution account. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FundingOfGeneralUnsecuredClaimsDistributionAccount" xlink:to="tdw_FundingOfGeneralUnsecuredClaimsDistributionAccount_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AdditionalPaidInCapitalAttributableToFairValue" xlink:type="locator" xlink:label="tdw_AdditionalPaidInCapitalAttributableToFairValue"/>
<label xml:lang="en-US" xlink:label="tdw_AdditionalPaidInCapitalAttributableToFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Additional paid in capital attributable to fair value. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AdditionalPaidInCapitalAttributableToFairValue" xlink:to="tdw_AdditionalPaidInCapitalAttributableToFairValue_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AdditionalPaidInCapitalAttributableToWarrants" xlink:type="locator" xlink:label="tdw_AdditionalPaidInCapitalAttributableToWarrants"/>
<label xml:lang="en-US" xlink:label="tdw_AdditionalPaidInCapitalAttributableToWarrants_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Additional paid in capital attributable to warrants. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AdditionalPaidInCapitalAttributableToWarrants" xlink:to="tdw_AdditionalPaidInCapitalAttributableToWarrants_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_LiabilitiesSubjectToCompromiseAccruedInterestPayable" xlink:type="locator" xlink:label="tdw_LiabilitiesSubjectToCompromiseAccruedInterestPayable"/>
<label xml:lang="en-US" xlink:label="tdw_LiabilitiesSubjectToCompromiseAccruedInterestPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Liabilities subject to compromise accrued interest payable. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_LiabilitiesSubjectToCompromiseAccruedInterestPayable" xlink:to="tdw_LiabilitiesSubjectToCompromiseAccruedInterestPayable_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_NotesIssuableInExchangeFaceAmount" xlink:type="locator" xlink:label="tdw_NotesIssuableInExchangeFaceAmount"/>
<label xml:lang="en-US" xlink:label="tdw_NotesIssuableInExchangeFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Notes Issuable In Exchange, Face Amount </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NotesIssuableInExchangeFaceAmount" xlink:to="tdw_NotesIssuableInExchangeFaceAmount_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:type="locator" xlink:label="us-gaap_RestatementAdjustmentMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestatementAdjustmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restatement Adjustment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestatementAdjustmentMember" xlink:to="us-gaap_RestatementAdjustmentMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestatementAdjustmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Restatement Adjustment [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_CreditFacilityAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Credit Facility </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Credit Facility [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:type="locator" xlink:label="us-gaap_CreditFacilityDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Credit Facility </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_CreditFacilityDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Credit Facility [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:type="locator" xlink:label="us-gaap_RevolvingCreditFacilityMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Revolving Credit Facility </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevolvingCreditFacilityMember" xlink:to="us-gaap_RevolvingCreditFacilityMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Revolving Credit Facility [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Long-term Debt, Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Longterm Debt Type [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Long-term Debt, Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LongtermDebtTypeDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Longterm Debt Type [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TermLoanFacilityMember" xlink:type="locator" xlink:label="tdw_TermLoanFacilityMember"/>
<label xml:lang="en-US" xlink:label="tdw_TermLoanFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Term Loan Facility [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TermLoanFacilityMember" xlink:to="tdw_TermLoanFacilityMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_TermLoanFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Term Loan Facility </label>
<label xml:lang="en-US" xlink:label="tdw_TermLoanFacilityMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Term Loan Facility [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SeptemberTwoThousandThirteenSeniorUnsecuredNotesMember" xlink:type="locator" xlink:label="tdw_SeptemberTwoThousandThirteenSeniorUnsecuredNotesMember"/>
<label xml:lang="en-US" xlink:label="tdw_SeptemberTwoThousandThirteenSeniorUnsecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> September Two Thousand Thirteen Senior Unsecured Notes [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SeptemberTwoThousandThirteenSeniorUnsecuredNotesMember" xlink:to="tdw_SeptemberTwoThousandThirteenSeniorUnsecuredNotesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SeptemberTwoThousandThirteenSeniorUnsecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> September 2013 Senior Unsecured Notes </label>
<label xml:lang="en-US" xlink:label="tdw_SeptemberTwoThousandThirteenSeniorUnsecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> September Two Thousand Thirteen Senior Unsecured Notes [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AugustTwoThousandElevenSeniorUnsecuredNotesMember" xlink:type="locator" xlink:label="tdw_AugustTwoThousandElevenSeniorUnsecuredNotesMember"/>
<label xml:lang="en-US" xlink:label="tdw_AugustTwoThousandElevenSeniorUnsecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> August two thousand eleven senior unsecured notes. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AugustTwoThousandElevenSeniorUnsecuredNotesMember" xlink:to="tdw_AugustTwoThousandElevenSeniorUnsecuredNotesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AugustTwoThousandElevenSeniorUnsecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> August 2011 Senior Unsecured Notes </label>
<label xml:lang="en-US" xlink:label="tdw_AugustTwoThousandElevenSeniorUnsecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> August Two Thousand Eleven Senior Unsecured Notes [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SeptemberTwentyTenSeniorUnsecuredNotesMember" xlink:type="locator" xlink:label="tdw_SeptemberTwentyTenSeniorUnsecuredNotesMember"/>
<label xml:lang="en-US" xlink:label="tdw_SeptemberTwentyTenSeniorUnsecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> September twenty ten, senior unsecured notes. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SeptemberTwentyTenSeniorUnsecuredNotesMember" xlink:to="tdw_SeptemberTwentyTenSeniorUnsecuredNotesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SeptemberTwentyTenSeniorUnsecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> September 2010 Senior Unsecured Notes </label>
<label xml:lang="en-US" xlink:label="tdw_SeptemberTwentyTenSeniorUnsecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> September Twenty Ten Senior Unsecured Notes [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SeniorNotesMember" xlink:type="locator" xlink:label="us-gaap_SeniorNotesMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_SeniorNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Senior Notes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeniorNotesMember" xlink:to="us-gaap_SeniorNotesMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SeniorNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Senior Notes [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh-Start Adjustments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis" xlink:to="us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentsTypeOfFreshStartAdjustmentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustments Type Of Fresh Start Adjustment [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TypeOfFreshStartAdjustmentDomain" xlink:type="locator" xlink:label="us-gaap_TypeOfFreshStartAdjustmentDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_TypeOfFreshStartAdjustmentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Type of Fresh-Start Adjustment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TypeOfFreshStartAdjustmentDomain" xlink:to="us-gaap_TypeOfFreshStartAdjustmentDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_TypeOfFreshStartAdjustmentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Type Of Fresh Start Adjustment [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ReorganizationAdjustmentsMember" xlink:type="locator" xlink:label="tdw_ReorganizationAdjustmentsMember"/>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationAdjustmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reorganization adjustments. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReorganizationAdjustmentsMember" xlink:to="tdw_ReorganizationAdjustmentsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationAdjustmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reorganization Adjustments </label>
<label xml:lang="en-US" xlink:label="tdw_ReorganizationAdjustmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reorganization Adjustments [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_GeneralUnsecuredCreditorsMember" xlink:type="locator" xlink:label="tdw_GeneralUnsecuredCreditorsMember"/>
<label xml:lang="en-US" xlink:label="tdw_GeneralUnsecuredCreditorsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> General unsecured creditors. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_GeneralUnsecuredCreditorsMember" xlink:to="tdw_GeneralUnsecuredCreditorsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_GeneralUnsecuredCreditorsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> General Unsecured Creditors </label>
<label xml:lang="en-US" xlink:label="tdw_GeneralUnsecuredCreditorsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> General Unsecured Creditors [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_UnresolvedSaleLeasebackClaimMember" xlink:type="locator" xlink:label="tdw_UnresolvedSaleLeasebackClaimMember"/>
<label xml:lang="en-US" xlink:label="tdw_UnresolvedSaleLeasebackClaimMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Unresolved Sale Leaseback Claim. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_UnresolvedSaleLeasebackClaimMember" xlink:to="tdw_UnresolvedSaleLeasebackClaimMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_UnresolvedSaleLeasebackClaimMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unresolved Sale Leaseback Claim </label>
<label xml:lang="en-US" xlink:label="tdw_UnresolvedSaleLeasebackClaimMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unresolved Sale Leaseback Claim [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SeriesAMember" xlink:type="locator" xlink:label="us-gaap_SeriesAMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_SeriesAMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Series A </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeriesAMember" xlink:to="us-gaap_SeriesAMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SeriesAMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Series A [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SeriesBMember" xlink:type="locator" xlink:label="us-gaap_SeriesBMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_SeriesBMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Series B </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SeriesBMember" xlink:to="us-gaap_SeriesBMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SeriesBMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Series B [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_IssuedCreditorWarrantsMember" xlink:type="locator" xlink:label="tdw_IssuedCreditorWarrantsMember"/>
<label xml:lang="en-US" xlink:label="tdw_IssuedCreditorWarrantsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Issued creditor warrants. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IssuedCreditorWarrantsMember" xlink:to="tdw_IssuedCreditorWarrantsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_IssuedCreditorWarrantsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Issued Creditor Warrants </label>
<label xml:lang="en-US" xlink:label="tdw_IssuedCreditorWarrantsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Issued Creditor Warrants [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ReservedCreditorWarrantsMember" xlink:type="locator" xlink:label="tdw_ReservedCreditorWarrantsMember"/>
<label xml:lang="en-US" xlink:label="tdw_ReservedCreditorWarrantsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reserved creditor warrants. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReservedCreditorWarrantsMember" xlink:to="tdw_ReservedCreditorWarrantsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ReservedCreditorWarrantsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reserved Creditor Warrants </label>
<label xml:lang="en-US" xlink:label="tdw_ReservedCreditorWarrantsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reserved Creditor Warrants [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAccountingAdjustmentsMember" xlink:type="locator" xlink:label="tdw_FreshStartAccountingAdjustmentsMember"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingAdjustmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh-start accounting adjustments. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAccountingAdjustmentsMember" xlink:to="tdw_FreshStartAccountingAdjustmentsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingAdjustmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh-start Accounting Adjustments </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAccountingAdjustmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Accounting Adjustments [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetUnderConstructionMember" xlink:type="locator" xlink:label="us-gaap_AssetUnderConstructionMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetUnderConstructionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reclassification of Construction in Progress to Other Non-Current Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetUnderConstructionMember" xlink:to="us-gaap_AssetUnderConstructionMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetUnderConstructionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Asset Under Construction [Member] </label>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<label xml:lang="en-US" xlink:label="country_US_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> United States </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_US" xlink:to="country_US_lbl"/>
<label xml:lang="en-US" xlink:label="country_US_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> UNITED STATES </label>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_BR" xlink:type="locator" xlink:label="country_BR"/>
<label xml:lang="en-US" xlink:label="country_BR_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Brazil </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_BR" xlink:to="country_BR_lbl"/>
<label xml:lang="en-US" xlink:label="country_BR_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> BRAZIL </label>
<label xml:lang="en-US" xlink:label="us-gaap_BankruptcyClaimsAmountOfClaimsSettled_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Payment made to holders of General Unsecured Claims upon emergence </label>
<label xml:lang="en-US" xlink:label="tdw_FundingOfGeneralUnsecuredClaimsDistributionAccount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amounts payable to holders of General Unsecured Claims at July 31, 2017 </label>
<label xml:lang="en-US" xlink:label="tdw_FundingOfGeneralUnsecuredClaimsDistributionAccount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Funding Of General Unsecured Claims Distribution Account </label>
<label xml:lang="en-US" xlink:label="us-gaap_BankruptcyClaimsAmountPaidToSettleClaims_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total payments pursuant to the Plan </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PostConfirmationCashAndCashEquivalentsUponFullPayment" xlink:type="locator" xlink:label="tdw_PostConfirmationCashAndCashEquivalentsUponFullPayment"/>
<label xml:lang="en-US" xlink:label="tdw_PostConfirmationCashAndCashEquivalentsUponFullPayment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Post confirmation cash and cash equivalents upon full payment. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostConfirmationCashAndCashEquivalentsUponFullPayment" xlink:to="tdw_PostConfirmationCashAndCashEquivalentsUponFullPayment_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PostConfirmationCashAndCashEquivalentsUponFullPayment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Postconfirmation cash upon full payment </label>
<label xml:lang="en-US" xlink:label="tdw_PostConfirmationCashAndCashEquivalentsUponFullPayment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Post Confirmation Cash And Cash Equivalents Upon Full Payment </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PrepaidExpensesRecognizedPriorToEffectiveDate" xlink:type="locator" xlink:label="tdw_PrepaidExpensesRecognizedPriorToEffectiveDate"/>
<label xml:lang="en-US" xlink:label="tdw_PrepaidExpensesRecognizedPriorToEffectiveDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Prepaid expenses recognized prior to effective date. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PrepaidExpensesRecognizedPriorToEffectiveDate" xlink:to="tdw_PrepaidExpensesRecognizedPriorToEffectiveDate_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PrepaidExpensesRecognizedPriorToEffectiveDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Prepaid expenses recognized prior to effective date </label>
<label xml:lang="en-US" xlink:label="tdw_PrepaidExpensesRecognizedPriorToEffectiveDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Prepaid Expenses Recognized Prior To Effective Date </label>
<label xml:lang="en-US" xlink:label="us-gaap_PreconfirmationCurrentMaturitiesOfLongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Reclassification from current to long-term </label>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Aggregate principal amount </label>
<loc xlink:href="tdw-20171231.xsd#tdw_GainOnSettlementOfLiabilitiesSubjectToCompromise" xlink:type="locator" xlink:label="tdw_GainOnSettlementOfLiabilitiesSubjectToCompromise"/>
<label xml:lang="en-US" xlink:label="tdw_GainOnSettlementOfLiabilitiesSubjectToCompromise_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Gain on settlement of liabilities subject to compromise. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_GainOnSettlementOfLiabilitiesSubjectToCompromise" xlink:to="tdw_GainOnSettlementOfLiabilitiesSubjectToCompromise_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCredit" xlink:type="locator" xlink:label="us-gaap_LineOfCredit"/>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Outstanding borrowing </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCredit" xlink:to="us-gaap_LineOfCredit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Line Of Credit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebt" xlink:type="locator" xlink:label="us-gaap_LongTermDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Amount outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebt" xlink:to="us-gaap_LongTermDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Long Term Debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnsecuredDebt" xlink:type="locator" xlink:label="us-gaap_UnsecuredDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnsecuredDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Aggregate debt outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnsecuredDebt" xlink:to="us-gaap_UnsecuredDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnsecuredDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unsecured Debt </label>
<label xml:lang="en-US" xlink:label="tdw_LiabilitiesSubjectToCompromiseAccruedInterestPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Accrued interest payable </label>
<label xml:lang="en-US" xlink:label="tdw_LiabilitiesSubjectToCompromiseAccruedInterestPayable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities Subject To Compromise Accrued Interest Payable </label>
<label xml:lang="en-US" xlink:label="tdw_NotesIssuableInExchangeFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Make-whole provision - Senior notes </label>
<label xml:lang="en-US" xlink:label="tdw_NotesIssuableInExchangeFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Notes Issuable In Exchange Face Amount </label>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesSubjectToCompromiseCapitalLeaseObligationsAndAccruedInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Lessor claims - sale leaseback agreements </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilitiesSubjectToCompromise" xlink:type="locator" xlink:label="us-gaap_LiabilitiesSubjectToCompromise"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesSubjectToCompromise_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel"> Total liabilities subject to compromise </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesSubjectToCompromise" xlink:to="us-gaap_LiabilitiesSubjectToCompromise_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesSubjectToCompromise_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Liabilities Subject To Compromise </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityFairValueDisclosure" xlink:type="locator" xlink:label="us-gaap_EquityFairValueDisclosure"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair value of equity and warrants issued to General Unsecured Creditors </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityFairValueDisclosure" xlink:to="us-gaap_EquityFairValueDisclosure_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityFairValueDisclosure_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Fair Value Disclosure </label>
<label xml:lang="en-US" xlink:label="tdw_GainOnSettlementOfLiabilitiesSubjectToCompromise_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Gain on settlement of Liabilities subject to compromise </label>
<label xml:lang="en-US" xlink:label="tdw_GainOnSettlementOfLiabilitiesSubjectToCompromise_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Gain On Settlement Of Liabilities Subject To Compromise </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Shares issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Issued During Period Shares New Issues </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharesIssuedPricePerShare" xlink:type="locator" xlink:label="us-gaap_SharesIssuedPricePerShare"/>
<label xml:lang="en-US" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Per share value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssuedPricePerShare" xlink:to="us-gaap_SharesIssuedPricePerShare_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Shares Issued Price Per Share </label>
<label xml:lang="en-US" xlink:label="tdw_AdditionalPaidInCapitalAttributableToWarrants_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Series A Warrants (2,432,432 Warrants at $1.88 per warrant) </label>
<label xml:lang="en-US" xlink:label="tdw_AdditionalPaidInCapitalAttributableToWarrants_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Additional Paid In Capital Attributable To Warrants </label>
<label xml:lang="en-US" xlink:label="tdw_AdditionalPaidInCapitalAttributableToFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Fair Value of Successor additional paid-in capital </label>
<label xml:lang="en-US" xlink:label="tdw_AdditionalPaidInCapitalAttributableToFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Additional Paid In Capital Attributable To Fair Value </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsDiscountRate" xlink:type="locator" xlink:label="us-gaap_FairValueInputsDiscountRate"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsDiscountRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair value discount rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsDiscountRate" xlink:to="us-gaap_FairValueInputsDiscountRate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsDiscountRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Inputs Discount Rate </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentDecreaseReceivablesUnderArbitrationProceeding" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentDecreaseReceivablesUnderArbitrationProceeding"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentDecreaseReceivablesUnderArbitrationProceeding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustment decrease receivables under arbitration proceeding. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentDecreaseReceivablesUnderArbitrationProceeding" xlink:to="tdw_FreshStartAdjustmentDecreaseReceivablesUnderArbitrationProceeding_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentDecreaseReceivablesUnderArbitrationProceeding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reduction in carrying value of vessel </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentDecreaseReceivablesUnderArbitrationProceeding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Decrease Receivables Under Arbitration Proceeding </label>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseReceivablesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Reduction in carrying value of receivable related to vessel </label>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationReceivablesNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Carrying value of receivable after fair value adjustment </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxAssetsCurrent" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxAssetsCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh-start accounting deferred tax </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxAssetsCurrent" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxAssetsCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Deferred Income Tax Assets Current </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentsWriteOffOfAccruedLosses" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfAccruedLosses"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfAccruedLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustments write-off of accrued losses. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentsWriteOffOfAccruedLosses" xlink:to="tdw_FreshStartAdjustmentsWriteOffOfAccruedLosses_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentIntangibleLiability" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentIntangibleLiability"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIntangibleLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustment intangible liability. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentIntangibleLiability" xlink:to="tdw_FreshStartAdjustmentIntangibleLiability_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentIntangibleLiabilityCurrent" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentIntangibleLiabilityCurrent"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIntangibleLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustment intangible liability current. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentIntangibleLiabilityCurrent" xlink:to="tdw_FreshStartAdjustmentIntangibleLiabilityCurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AmortizationPeriodOfIntangibleLiability" xlink:type="locator" xlink:label="tdw_AmortizationPeriodOfIntangibleLiability"/>
<label xml:lang="en-US" xlink:label="tdw_AmortizationPeriodOfIntangibleLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Amortization period of intangible liability. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AmortizationPeriodOfIntangibleLiability" xlink:to="tdw_AmortizationPeriodOfIntangibleLiability_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentsWriteOffOfDeferredRentAndUnrecognizedDeferredGain" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfDeferredRentAndUnrecognizedDeferredGain"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfDeferredRentAndUnrecognizedDeferredGain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustments write-off of deferred rent and unrecognized deferred gain. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentsWriteOffOfDeferredRentAndUnrecognizedDeferredGain" xlink:to="tdw_FreshStartAdjustmentsWriteOffOfDeferredRentAndUnrecognizedDeferredGain_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentsWriteOffOfCurrentDeferredRentAndUnrecognizedDeferredGain" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfCurrentDeferredRentAndUnrecognizedDeferredGain"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfCurrentDeferredRentAndUnrecognizedDeferredGain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh start adjustments write-off of current deferred rent and unrecognized deferred gain. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentsWriteOffOfCurrentDeferredRentAndUnrecognizedDeferredGain" xlink:to="tdw_FreshStartAdjustmentsWriteOffOfCurrentDeferredRentAndUnrecognizedDeferredGain_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfAccruedLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Write-off of accrued losses </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfAccruedLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustments Write Off Of Accrued Losses </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIntangibleLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Intangible liability </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIntangibleLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Intangible Liability </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIntangibleLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current intangible liability </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIntangibleLiabilityCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Intangible Liability Current </label>
<label xml:lang="en-US" xlink:label="tdw_AmortizationPeriodOfIntangibleLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amortization of intangible liability contract </label>
<label xml:lang="en-US" xlink:label="tdw_AmortizationPeriodOfIntangibleLiability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Amortization Period Of Intangible Liability </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfDeferredRentAndUnrecognizedDeferredGain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Write-off of deferred rent and unrecognized deferred gain </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfDeferredRentAndUnrecognizedDeferredGain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustments Write Off Of Deferred Rent And Unrecognized Deferred Gain </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfCurrentDeferredRentAndUnrecognizedDeferredGain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Write-off of current deferred rent and unrecognized deferred gain </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentsWriteOffOfCurrentDeferredRentAndUnrecognizedDeferredGain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustments Write Off Of Current Deferred Rent And Unrecognized Deferred Gain </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh-start accounting deferred tax current </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesCurrent" xlink:to="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Increase Decrease Deferred Income Tax Liabilities Current </label>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Fresh-start accounting deferred tax long-term </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SecuredDebt" xlink:type="locator" xlink:label="us-gaap_SecuredDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_SecuredDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> New secured notes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SecuredDebt" xlink:to="us-gaap_SecuredDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SecuredDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Secured Debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentUnamortizedPremium" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentUnamortizedPremium"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentUnamortizedPremium_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Premium recorded </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentUnamortizedPremium" xlink:to="us-gaap_DebtInstrumentUnamortizedPremium_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentUnamortizedPremium_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Unamortized Premium </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Aggregate discount recorded </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentUnamortizedDiscount" xlink:to="us-gaap_DebtInstrumentUnamortizedDiscount_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Unamortized Discount </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:type="locator" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost"/>
<label xml:lang="en-US" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Write-off of unamortized debt issuance costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WriteOffOfDeferredDebtIssuanceCost" xlink:to="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_WriteOffOfDeferredDebtIssuanceCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Write Off Of Deferred Debt Issuance Cost </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentIncreaseDecreaseMinorityInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Decrease in Noncontrolling interests </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DebtSaleLeasebackAndOtherReorganizationItems" xlink:type="locator" xlink:label="tdw_DebtSaleLeasebackAndOtherReorganizationItems"/>
<label xml:lang="en-US" xlink:label="tdw_DebtSaleLeasebackAndOtherReorganizationItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Debt sale leaseback and other reorganization items. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DebtSaleLeasebackAndOtherReorganizationItems" xlink:to="tdw_DebtSaleLeasebackAndOtherReorganizationItems_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtorReorganizationItemsRevaluationOfAssetsAndLiabilities" xlink:type="locator" xlink:label="us-gaap_DebtorReorganizationItemsRevaluationOfAssetsAndLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtorReorganizationItemsRevaluationOfAssetsAndLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh start adjustments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtorReorganizationItemsRevaluationOfAssetsAndLiabilities" xlink:to="us-gaap_DebtorReorganizationItemsRevaluationOfAssetsAndLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtorReorganizationItemsRevaluationOfAssetsAndLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debtor Reorganization Items Revaluation Of Assets And Liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_DebtSaleLeasebackAndOtherReorganizationItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt, sale leaseback and other reorganization items </label>
<label xml:lang="en-US" xlink:label="tdw_DebtSaleLeasebackAndOtherReorganizationItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Sale Leaseback And Other Reorganization Items </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees" xlink:type="locator" xlink:label="us-gaap_DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reorganization-related professional fees </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees" xlink:to="us-gaap_DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debtor Reorganization Items Legal And Advisory Professional Fees </label>
<label xml:lang="en-US" xlink:label="us-gaap_ReorganizationItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Loss on reorganization items </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Equity Method Investments [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEquityMethodInvestmentsTable" xlink:to="us-gaap_ScheduleOfEquityMethodInvestmentsTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Equity Method Investments [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investment, Name </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:to="us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Equity Method Investment Equity Method Investee Name [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityMethodInvesteeNameDomain" xlink:type="locator" xlink:label="us-gaap_EquityMethodInvesteeNameDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvesteeNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investment, Name </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvesteeNameDomain" xlink:to="us-gaap_EquityMethodInvesteeNameDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvesteeNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Method Investee Name [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SonatideMarineLtdAndDtdwHoldingsLtdMember" xlink:type="locator" xlink:label="tdw_SonatideMarineLtdAndDtdwHoldingsLtdMember"/>
<label xml:lang="en-US" xlink:label="tdw_SonatideMarineLtdAndDtdwHoldingsLtdMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Sonatide Marine Ltd and DTDW Holdings Ltd. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SonatideMarineLtdAndDtdwHoldingsLtdMember" xlink:to="tdw_SonatideMarineLtdAndDtdwHoldingsLtdMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SonatideMarineLtdAndDtdwHoldingsLtdMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sonatide Marine Ltd and DTDW Holdings Ltd. </label>
<label xml:lang="en-US" xlink:label="tdw_SonatideMarineLtdAndDtdwHoldingsLtdMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sonatide Marine Ltd And Dtdw Holdings Ltd [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SonatideMarineLtdMember" xlink:type="locator" xlink:label="tdw_SonatideMarineLtdMember"/>
<label xml:lang="en-US" xlink:label="tdw_SonatideMarineLtdMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Sonatide Marine Ltd [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SonatideMarineLtdMember" xlink:to="tdw_SonatideMarineLtdMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SonatideMarineLtdMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sonatide Marine, Ltd. </label>
<label xml:lang="en-US" xlink:label="tdw_SonatideMarineLtdMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sonatide Marine Ltd [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DtdwHoldingsLtdMember" xlink:type="locator" xlink:label="tdw_DtdwHoldingsLtdMember"/>
<label xml:lang="en-US" xlink:label="tdw_DtdwHoldingsLtdMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> DTDW Holdings Ltd [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DtdwHoldingsLtdMember" xlink:to="tdw_DtdwHoldingsLtdMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DtdwHoldingsLtdMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> DTDW Holdings, Ltd. </label>
<label xml:lang="en-US" xlink:label="tdw_DtdwHoldingsLtdMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Dtdw Holdings Ltd [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Equity Method Investments [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:to="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Equity Method Investments [Line Items] </label>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveTerseLabel"> Ownership percentage in unconsolidated affiliates </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets" xlink:type="locator" xlink:label="us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investments in, at equity, and advances to unconsolidated companies </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets" xlink:to="us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentUnderlyingEquityInNetAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Method Investment Underlying Equity In Net Assets </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FreshStartAdjustmentPeriod" xlink:type="locator" xlink:label="tdw_FreshStartAdjustmentPeriod"/>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fresh-start adjustment, period. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreshStartAdjustmentPeriod" xlink:to="tdw_FreshStartAdjustmentPeriod_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FreshStartAdjustmentIncreaseDecreaseInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Fresh-start adjustment equity method investment </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fresh-start adjustment, period </label>
<label xml:lang="en-US" xlink:label="tdw_FreshStartAdjustmentPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fresh Start Adjustment Period </label>
<loc xlink:href="tdw-20171231.xsd#tdw_IncomeLossFromContinuingOperationsBeforeIncomeTaxes" xlink:type="locator" xlink:label="tdw_IncomeLossFromContinuingOperationsBeforeIncomeTaxes"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeLossFromContinuingOperationsBeforeIncomeTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Sum of operating profit and nonoperating income (expense) before income taxes. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncomeLossFromContinuingOperationsBeforeIncomeTaxes" xlink:to="tdw_IncomeLossFromContinuingOperationsBeforeIncomeTaxes_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Components of Income Before Income Tax Expense (Benefit) [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitLineItems" xlink:to="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitTable" xlink:type="locator" xlink:label="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Components of Income Before Income Tax Expense (Benefit) [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitTable" xlink:to="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Components Of Income Before Income Tax Expense Benefit [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Components Of Income Before Income Tax Expense Benefit [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Components Of Income Before Income Tax Expense Benefit [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfComponentsOfIncomeBeforeIncomeTaxExpenseBenefitLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Components Of Income Before Income Tax Expense Benefit [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Earnings before income taxes, Non-U.S </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Loss From Continuing Operations Before Income Taxes Foreign </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Earnings before income taxes, United States </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Loss From Continuing Operations Before Income Taxes Domestic </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeLossFromContinuingOperationsBeforeIncomeTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total pre-tax amounts </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeLossFromContinuingOperationsBeforeIncomeTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Loss From Continuing Operations Before Income Taxes </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ReconciliationOfProvisionOfIncomeTaxesLineItems" xlink:type="locator" xlink:label="tdw_ReconciliationOfProvisionOfIncomeTaxesLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfProvisionOfIncomeTaxesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reconciliation of Provision of Income Taxes [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReconciliationOfProvisionOfIncomeTaxesLineItems" xlink:to="tdw_ReconciliationOfProvisionOfIncomeTaxesLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_IncomeTaxesTable" xlink:type="locator" xlink:label="tdw_IncomeTaxesTable"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Income Taxes [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncomeTaxesTable" xlink:to="tdw_IncomeTaxesTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income Taxes [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Taxes [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfProvisionOfIncomeTaxesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reconciliation Of Provision Of Income Taxes [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfProvisionOfIncomeTaxesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reconciliation Of Provision Of Income Taxes [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit"/>
<label xml:lang="en-US" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current, Federal, Income tax expense (benefit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentFederalTaxExpenseBenefit" xlink:to="us-gaap_CurrentFederalTaxExpenseBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Current Federal Tax Expense Benefit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred, Federal, Income tax expense (benefit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredFederalIncomeTaxExpenseBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Federal Income Tax Expense Benefit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations" xlink:type="locator" xlink:label="us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations"/>
<label xml:lang="en-US" xlink:label="us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Federal, Income tax expense (benefit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations" xlink:to="us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Federal Income Tax Expense Benefit Continuing Operations </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
<label xml:lang="en-US" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current, State, Income tax expense (benefit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:to="us-gaap_CurrentStateAndLocalTaxExpenseBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Current State And Local Tax Expense Benefit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred, State, Income tax expense (benefit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred State And Local Income Tax Expense Benefit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations" xlink:type="locator" xlink:label="us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations"/>
<label xml:lang="en-US" xlink:label="us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> State, Income tax expense (benefit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations" xlink:to="us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> State And Local Income Tax Expense Benefit Continuing Operations </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CurrentForeignTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit"/>
<label xml:lang="en-US" xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current, International, Income tax expense (benefit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentForeignTaxExpenseBenefit" xlink:to="us-gaap_CurrentForeignTaxExpenseBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Current Foreign Tax Expense Benefit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredForeignIncomeTaxExpenseBenefit"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredForeignIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred, International, Income tax expense (benefit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredForeignIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredForeignIncomeTaxExpenseBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredForeignIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Foreign Income Tax Expense Benefit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations" xlink:type="locator" xlink:label="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> International, Income tax expense (benefit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations" xlink:to="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Foreign Income Tax Expense Benefit Continuing Operations </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit"/>
<label xml:lang="en-US" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current, Total, Income tax expense (benefit) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Current Income Tax Expense Benefit </label>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Deferred, Total, Income tax expense (benefit) </label>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Income tax expense (benefit), Total </label>
<loc xlink:href="tdw-20171231.xsd#tdw_IncomeTaxLineItems" xlink:type="locator" xlink:label="tdw_IncomeTaxLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Income Tax [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncomeTaxLineItems" xlink:to="tdw_IncomeTaxLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_IncomeTaxTable" xlink:type="locator" xlink:label="tdw_IncomeTaxTable"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Income Tax [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IncomeTaxTable" xlink:to="tdw_IncomeTaxTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income Tax [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax [Table] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_IntercompanyVesselSalesMember" xlink:type="locator" xlink:label="tdw_IntercompanyVesselSalesMember"/>
<label xml:lang="en-US" xlink:label="tdw_IntercompanyVesselSalesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Intercompany vessel sales. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_IntercompanyVesselSalesMember" xlink:to="tdw_IntercompanyVesselSalesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_IntercompanyVesselSalesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Intercompany Vessel Sales </label>
<label xml:lang="en-US" xlink:label="tdw_IntercompanyVesselSalesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Intercompany Vessel Sales [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DomesticSubsidiariesMember" xlink:type="locator" xlink:label="tdw_DomesticSubsidiariesMember"/>
<label xml:lang="en-US" xlink:label="tdw_DomesticSubsidiariesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Domestic subsidiaries. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DomesticSubsidiariesMember" xlink:to="tdw_DomesticSubsidiariesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DomesticSubsidiariesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Domestic Subsidiaries </label>
<label xml:lang="en-US" xlink:label="tdw_DomesticSubsidiariesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Domestic Subsidiaries [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income Tax Authority </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityAxis" xlink:to="us-gaap_IncomeTaxAuthorityAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Authority [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income Tax Authority </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityDomain" xlink:to="us-gaap_IncomeTaxAuthorityDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxAuthorityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Authority [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DomesticCountryMember" xlink:type="locator" xlink:label="us-gaap_DomesticCountryMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_DomesticCountryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Federal NOL </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DomesticCountryMember" xlink:to="us-gaap_DomesticCountryMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DomesticCountryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Domestic Country [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignCountryMember" xlink:type="locator" xlink:label="us-gaap_ForeignCountryMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForeignCountryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Foreign NOL </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForeignCountryMember" xlink:to="us-gaap_ForeignCountryMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForeignCountryMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Foreign Country [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioPlanMember" xlink:type="locator" xlink:label="us-gaap_ScenarioPlanMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScenarioPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Scenario Plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScenarioPlanMember" xlink:to="us-gaap_ScenarioPlanMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScenarioPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Scenario Plan [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income Tax [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:type="locator" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
<label xml:lang="en-US" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Federal statutory tax rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ReconciliationOfStatutoryFederalTaxRateLineItems" xlink:type="locator" xlink:label="tdw_ReconciliationOfStatutoryFederalTaxRateLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfStatutoryFederalTaxRateLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reconciliation of Statutory Federal Tax Rate [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReconciliationOfStatutoryFederalTaxRateLineItems" xlink:to="tdw_ReconciliationOfStatutoryFederalTaxRateLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ReconciliationOfStatutoryFederalTaxRateTable" xlink:type="locator" xlink:label="tdw_ReconciliationOfStatutoryFederalTaxRateTable"/>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfStatutoryFederalTaxRateTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reconciliation of Statutory Federal Tax Rate [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReconciliationOfStatutoryFederalTaxRateTable" xlink:to="tdw_ReconciliationOfStatutoryFederalTaxRateTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfStatutoryFederalTaxRateTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reconciliation Of Statutory Federal Tax Rate [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfStatutoryFederalTaxRateTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reconciliation Of Statutory Federal Tax Rate [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfStatutoryFederalTaxRateLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reconciliation Of Statutory Federal Tax Rate [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfStatutoryFederalTaxRateLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reconciliation Of Statutory Federal Tax Rate [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Computed “expected” tax expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:to="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Foreign income taxed at different rates </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential" xlink:to="us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation Foreign Income Tax Rate Differential </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationUncertainTaxPosition_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Uncertain tax positions </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationUncertainTaxPosition_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation Uncertain Tax Position </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationReorganization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Chapter 11 reorganization </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationReorganization_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation Reorganization </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpense" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationNondeductibleExpense"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationNondeductibleExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Nondeductible transaction costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationNondeductibleExpense" xlink:to="us-gaap_IncomeTaxReconciliationNondeductibleExpense_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationNondeductibleExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation Nondeductible Expense </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationTransitionTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Transition tax </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationTransitionTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation Transition Tax </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Valuation allowance – deferred tax assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:to="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationDeductionsAmortizationOfDeferralsAssociatedWithIntercompanySalesToForeignTaxJurisdictions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Amortization of deferrals associated with intercompany sales to foreign tax jurisdictions </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationDeductionsAmortizationOfDeferralsAssociatedWithIntercompanySalesToForeignTaxJurisdictions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation Deductions Amortization Of Deferrals Associated With Intercompany Sales To Foreign Tax Jurisdictions </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationIncreaseDecreaseInForeignTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Foreign taxes </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationIncreaseDecreaseInForeignTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation Increase Decrease In Foreign Taxes </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> State taxes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:to="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation State And Local Income Taxes </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other, net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:to="us-gaap_IncomeTaxReconciliationOtherAdjustments_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation Other Adjustments </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationRemeasurementOfDeferredTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Remeasurement of deferred taxes </label>
<label xml:lang="en-US" xlink:label="tdw_IncomeTaxReconciliationRemeasurementOfDeferredTaxes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Reconciliation Remeasurement Of Deferred Taxes </label>
<loc xlink:href="tdw-20171231.xsd#tdw_UnamortizedAmountRelatedToVesselTransfers" xlink:type="locator" xlink:label="tdw_UnamortizedAmountRelatedToVesselTransfers"/>
<label xml:lang="en-US" xlink:label="tdw_UnamortizedAmountRelatedToVesselTransfers_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Unamortized amount related to vessel transfers. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_UnamortizedAmountRelatedToVesselTransfers" xlink:to="tdw_UnamortizedAmountRelatedToVesselTransfers_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_UnamortizedAmountRelatedToVesselTransfers_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Remaining unamortized amount </label>
<label xml:lang="en-US" xlink:label="tdw_UnamortizedAmountRelatedToVesselTransfers_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unamortized Amount Related To Vessel Transfers </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfEffectiveTaxRateReconciliationLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfEffectiveTaxRateReconciliationLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfEffectiveTaxRateReconciliationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Effective Tax Rate Reconciliation [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfEffectiveTaxRateReconciliationLineItems" xlink:to="tdw_ScheduleOfEffectiveTaxRateReconciliationLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ReconciliationOfEffectiveIncomeTaxRateTable" xlink:type="locator" xlink:label="tdw_ReconciliationOfEffectiveIncomeTaxRateTable"/>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfEffectiveIncomeTaxRateTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reconciliation of Effective Income Tax Rate [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReconciliationOfEffectiveIncomeTaxRateTable" xlink:to="tdw_ReconciliationOfEffectiveIncomeTaxRateTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfEffectiveIncomeTaxRateTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reconciliation Of Effective Income Tax Rate [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ReconciliationOfEffectiveIncomeTaxRateTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reconciliation Of Effective Income Tax Rate [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfEffectiveTaxRateReconciliationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Effective Tax Rate Reconciliation [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfEffectiveTaxRateReconciliationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Effective Tax Rate Reconciliation [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:type="locator" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations"/>
<label xml:lang="en-US" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Effective tax rate applicable to pre-tax earnings </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:to="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Effective Income Tax Rate Continuing Operations </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DeferredTaxLiabilitiesSection1245Recapture" xlink:type="locator" xlink:label="tdw_DeferredTaxLiabilitiesSection1245Recapture"/>
<label xml:lang="en-US" xlink:label="tdw_DeferredTaxLiabilitiesSection1245Recapture_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Deferred tax liabilities section 1245 recapture. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DeferredTaxLiabilitiesSection1245Recapture" xlink:to="tdw_DeferredTaxLiabilitiesSection1245Recapture_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Deferred Income Tax Assets and Liabilities [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesLineItems" xlink:to="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesTable" xlink:type="locator" xlink:label="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Deferred Income Tax Assets and Liabilities [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesTable" xlink:to="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Deferred Income Tax Assets And Liabilities [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Deferred Income Tax Assets And Liabilities [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Deferred Income Tax Assets And Liabilities [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDeferredIncomeTaxAssetsAndLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Deferred Income Tax Assets And Liabilities [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued employee benefit plan costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Stock based compensation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net operating loss and tax credit carryforwards </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:to="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Assets Operating Loss Carryforwards </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Restructuring fees not currently deductible for tax purposes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsRestructuringCharges_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Restructuring Charges </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Depreciation and amortization </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment" xlink:to="us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Assets Property Plant And Equipment </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsOther" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsOther"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsOther" xlink:to="us-gaap_DeferredTaxAssetsOther_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Assets Other </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsGross"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Gross deferred tax assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsGross_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsGross_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Assets Gross </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Less valuation allowance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsValuationAllowance" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Assets Valuation Allowance </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsNetNoncurrent" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsNetNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsNetNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net deferred tax assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsNetNoncurrent" xlink:to="us-gaap_DeferredTaxAssetsNetNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsNetNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Assets Net Noncurrent </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Basis difference in partnership </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates" xlink:to="us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Liabilities Investment In Noncontrolled Affiliates </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Depreciation and amortization </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:to="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Liabilities Property Plant And Equipment </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredTaxLiabilitiesSection1245Recapture_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Section 1245 recapture </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredTaxLiabilitiesSection1245Recapture_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Liabilities Section1245 Recapture </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilitiesOther" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesOther"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Other </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilitiesOther" xlink:to="us-gaap_DeferredTaxLiabilitiesOther_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilitiesOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Liabilities Other </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities" xlink:type="locator" xlink:label="us-gaap_DeferredIncomeTaxLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel"> Gross deferred tax liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxLiabilities" xlink:to="us-gaap_DeferredIncomeTaxLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredIncomeTaxLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Income Tax Liabilities </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel"> Net deferred tax assets (liabilities) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilities" xlink:to="us-gaap_DeferredTaxLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Liabilities </label>
<loc xlink:href="tdw-20171231.xsd#tdw_CancellationOfIndebtednessIncome" xlink:type="locator" xlink:label="tdw_CancellationOfIndebtednessIncome"/>
<label xml:lang="en-US" xlink:label="tdw_CancellationOfIndebtednessIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Cancellation of indebtedness income. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CancellationOfIndebtednessIncome" xlink:to="tdw_CancellationOfIndebtednessIncome_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AggregateTaxAttributeReductionInCancellationOfIndebtedness" xlink:type="locator" xlink:label="tdw_AggregateTaxAttributeReductionInCancellationOfIndebtedness"/>
<label xml:lang="en-US" xlink:label="tdw_AggregateTaxAttributeReductionInCancellationOfIndebtedness_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Aggregate tax attribute reduction in cancellation of indebtedness. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AggregateTaxAttributeReductionInCancellationOfIndebtedness" xlink:to="tdw_AggregateTaxAttributeReductionInCancellationOfIndebtedness_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_CancellationOfIndebtednessImpactedInNetOperatingLossesAndDepreciableAssets" xlink:type="locator" xlink:label="tdw_CancellationOfIndebtednessImpactedInNetOperatingLossesAndDepreciableAssets"/>
<label xml:lang="en-US" xlink:label="tdw_CancellationOfIndebtednessImpactedInNetOperatingLossesAndDepreciableAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Cancellation of indebtedness impacted in net operating losses and depreciable assets. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CancellationOfIndebtednessImpactedInNetOperatingLossesAndDepreciableAssets" xlink:to="tdw_CancellationOfIndebtednessImpactedInNetOperatingLossesAndDepreciableAssets_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_CancellationOfIndebtednessAttributeReductionInTaxBasisOfStockOfForeignSubsidiaries" xlink:type="locator" xlink:label="tdw_CancellationOfIndebtednessAttributeReductionInTaxBasisOfStockOfForeignSubsidiaries"/>
<label xml:lang="en-US" xlink:label="tdw_CancellationOfIndebtednessAttributeReductionInTaxBasisOfStockOfForeignSubsidiaries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Cancellation of indebtedness attribute reduction in the tax basis of stock of foreign subsidiaries. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CancellationOfIndebtednessAttributeReductionInTaxBasisOfStockOfForeignSubsidiaries" xlink:to="tdw_CancellationOfIndebtednessAttributeReductionInTaxBasisOfStockOfForeignSubsidiaries_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ExcessCancellationOfIndebtednessIncomeAttributedSubsidiaries" xlink:type="locator" xlink:label="tdw_ExcessCancellationOfIndebtednessIncomeAttributedSubsidiaries"/>
<label xml:lang="en-US" xlink:label="tdw_ExcessCancellationOfIndebtednessIncomeAttributedSubsidiaries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Excess cancellation of indebtedness income attributed subsidiaries. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ExcessCancellationOfIndebtednessIncomeAttributedSubsidiaries" xlink:to="tdw_ExcessCancellationOfIndebtednessIncomeAttributedSubsidiaries_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DeferredTaxRecognizedOnRemainingOfExcessCancellationOfIndebtednessIncome" xlink:type="locator" xlink:label="tdw_DeferredTaxRecognizedOnRemainingOfExcessCancellationOfIndebtednessIncome"/>
<label xml:lang="en-US" xlink:label="tdw_DeferredTaxRecognizedOnRemainingOfExcessCancellationOfIndebtednessIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Deferred tax recognized on remaining of excess cancellation of indebtedness income. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DeferredTaxRecognizedOnRemainingOfExcessCancellationOfIndebtednessIncome" xlink:to="tdw_DeferredTaxRecognizedOnRemainingOfExcessCancellationOfIndebtednessIncome_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_CancellationOfIndebtednessIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cancellation of indebtedness (COD) income </label>
<label xml:lang="en-US" xlink:label="tdw_CancellationOfIndebtednessIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cancellation Of Indebtedness Income </label>
<label xml:lang="en-US" xlink:label="tdw_AggregateTaxAttributeReductionInCancellationOfIndebtedness_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Total amount of reduction of tax attributes </label>
<label xml:lang="en-US" xlink:label="tdw_AggregateTaxAttributeReductionInCancellationOfIndebtedness_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Aggregate Tax Attribute Reduction In Cancellation Of Indebtedness </label>
<label xml:lang="en-US" xlink:label="tdw_CancellationOfIndebtednessImpactedInNetOperatingLossesAndDepreciableAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net operating losses and depreciable assets </label>
<label xml:lang="en-US" xlink:label="tdw_CancellationOfIndebtednessImpactedInNetOperatingLossesAndDepreciableAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cancellation Of Indebtedness Impacted In Net Operating Losses And Depreciable Assets </label>
<label xml:lang="en-US" xlink:label="tdw_CancellationOfIndebtednessAttributeReductionInTaxBasisOfStockOfForeignSubsidiaries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Attribute reduction in stock of foreign subsidiaries </label>
<label xml:lang="en-US" xlink:label="tdw_CancellationOfIndebtednessAttributeReductionInTaxBasisOfStockOfForeignSubsidiaries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cancellation Of Indebtedness Attribute Reduction In Tax Basis Of Stock Of Foreign Subsidiaries </label>
<label xml:lang="en-US" xlink:label="tdw_ExcessCancellationOfIndebtednessIncomeAttributedSubsidiaries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Excess COD income attributed to subsidiaries </label>
<label xml:lang="en-US" xlink:label="tdw_ExcessCancellationOfIndebtednessIncomeAttributedSubsidiaries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Excess Cancellation Of Indebtedness Income Attributed Subsidiaries </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredTaxRecognizedOnRemainingOfExcessCancellationOfIndebtednessIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred tax recognized on excess COD income </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredTaxRecognizedOnRemainingOfExcessCancellationOfIndebtednessIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Recognized On Remaining Of Excess Cancellation Of Indebtedness Income </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TaxCreditCarryforwardExpirationYearRangeStart" xlink:type="locator" xlink:label="tdw_TaxCreditCarryforwardExpirationYearRangeStart"/>
<label xml:lang="en-US" xlink:label="tdw_TaxCreditCarryforwardExpirationYearRangeStart_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Tax credit carryforward expiration year range start. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TaxCreditCarryforwardExpirationYearRangeStart" xlink:to="tdw_TaxCreditCarryforwardExpirationYearRangeStart_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_TaxCreditCarryforwardExpirationYearRangeEnd" xlink:type="locator" xlink:label="tdw_TaxCreditCarryforwardExpirationYearRangeEnd"/>
<label xml:lang="en-US" xlink:label="tdw_TaxCreditCarryforwardExpirationYearRangeEnd_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Tax credit carryforward expiration year range end. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TaxCreditCarryforwardExpirationYearRangeEnd" xlink:to="tdw_TaxCreditCarryforwardExpirationYearRangeEnd_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_OperatingLossCarryforwardsIncreaseDecrease" xlink:type="locator" xlink:label="tdw_OperatingLossCarryforwardsIncreaseDecrease"/>
<label xml:lang="en-US" xlink:label="tdw_OperatingLossCarryforwardsIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Operating loss carryforwards increase (decrease). </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OperatingLossCarryforwardsIncreaseDecrease" xlink:to="tdw_OperatingLossCarryforwardsIncreaseDecrease_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingLossCarryforwards" xlink:type="locator" xlink:label="us-gaap_OperatingLossCarryforwards"/>
<label xml:lang="en-US" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net operating loss ("NOL") carryforwards </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLossCarryforwards" xlink:to="us-gaap_OperatingLossCarryforwards_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Operating Loss Carryforwards </label>
<label xml:lang="en-US" xlink:label="tdw_OperatingLossCarryforwardsIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reduced in net operating loss carryforwards </label>
<label xml:lang="en-US" xlink:label="tdw_OperatingLossCarryforwardsIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Operating Loss Carryforwards Increase Decrease </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TaxCreditCarryforwardAmount" xlink:type="locator" xlink:label="us-gaap_TaxCreditCarryforwardAmount"/>
<label xml:lang="en-US" xlink:label="us-gaap_TaxCreditCarryforwardAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Tax credit </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TaxCreditCarryforwardAmount" xlink:to="us-gaap_TaxCreditCarryforwardAmount_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_TaxCreditCarryforwardAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Tax Credit Carryforward Amount </label>
<label xml:lang="en-US" xlink:label="tdw_TaxCreditCarryforwardExpirationYearRangeStart_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Tax credit year expire, start year </label>
<label xml:lang="en-US" xlink:label="tdw_TaxCreditCarryforwardExpirationYearRangeStart_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Tax Credit Carryforward Expiration Year Range Start </label>
<label xml:lang="en-US" xlink:label="tdw_TaxCreditCarryforwardExpirationYearRangeEnd_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Tax credit year expire, end year </label>
<label xml:lang="en-US" xlink:label="tdw_TaxCreditCarryforwardExpirationYearRangeEnd_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Tax Credit Carryforward Expiration Year Range End </label>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Valuation allowance </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unrecognized deferred tax liability for temporary differences related to investments in foreign subsidiaries estimated amount </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries" xlink:to="us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Undistributed Earnings Of Foreign Subsidiaries </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ForeignTaxCreditCarryForwardsExpirePeriod" xlink:type="locator" xlink:label="tdw_ForeignTaxCreditCarryForwardsExpirePeriod"/>
<label xml:lang="en-US" xlink:label="tdw_ForeignTaxCreditCarryForwardsExpirePeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Foreign Tax Credit Carry-Forwards Expire Period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ForeignTaxCreditCarryForwardsExpirePeriod" xlink:to="tdw_ForeignTaxCreditCarryForwardsExpirePeriod_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ForeignTaxCreditCarryForwardsExpirePeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Foreign tax credit carry-forwards expiry period </label>
<label xml:lang="en-US" xlink:label="tdw_ForeignTaxCreditCarryForwardsExpirePeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Foreign Tax Credit Carry Forwards Expire Period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsTaxCreditCarryforwards"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Foreign tax credit carry-forwards </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsTaxCreditCarryforwards" xlink:to="us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Tax Assets Tax Credit Carryforwards </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LiabilityForUncertainTaxPositionsNoncurrent" xlink:type="locator" xlink:label="us-gaap_LiabilityForUncertainTaxPositionsNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilityForUncertainTaxPositionsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Tax liabilities for uncertain tax positions </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilityForUncertainTaxPositionsNoncurrent" xlink:to="us-gaap_LiabilityForUncertainTaxPositionsNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilityForUncertainTaxPositionsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Liability For Uncertain Tax Positions Noncurrent </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TaxesPayableCurrent" xlink:type="locator" xlink:label="us-gaap_TaxesPayableCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_TaxesPayableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income tax payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TaxesPayableCurrent" xlink:to="us-gaap_TaxesPayableCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_TaxesPayableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Taxes Payable Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income tax penalties and interest </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued" xlink:to="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unrecognized Tax Benefits Income Tax Penalties Accrued </label>
<loc xlink:href="tdw-20171231.xsd#tdw_UnrecognizedTaxBenefitInterestIncomeReceivable" xlink:type="locator" xlink:label="tdw_UnrecognizedTaxBenefitInterestIncomeReceivable"/>
<label xml:lang="en-US" xlink:label="tdw_UnrecognizedTaxBenefitInterestIncomeReceivable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> This element represents an interest income receivable on an uncertain tax position. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_UnrecognizedTaxBenefitInterestIncomeReceivable" xlink:to="tdw_UnrecognizedTaxBenefitInterestIncomeReceivable_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_UnrecognizedTaxBenefitsCurrentAndPriorPeriodTaxPositions" xlink:type="locator" xlink:label="tdw_UnrecognizedTaxBenefitsCurrentAndPriorPeriodTaxPositions"/>
<label xml:lang="en-US" xlink:label="tdw_UnrecognizedTaxBenefitsCurrentAndPriorPeriodTaxPositions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> The gross amount of unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_UnrecognizedTaxBenefitsCurrentAndPriorPeriodTaxPositions" xlink:to="tdw_UnrecognizedTaxBenefitsCurrentAndPriorPeriodTaxPositions_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxContingencyTable" xlink:type="locator" xlink:label="us-gaap_IncomeTaxContingencyTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxContingencyTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income Tax Contingency [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxContingencyTable" xlink:to="us-gaap_IncomeTaxContingencyTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxContingencyTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Contingency [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StateAndLocalJurisdictionMember" xlink:type="locator" xlink:label="us-gaap_StateAndLocalJurisdictionMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_StateAndLocalJurisdictionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> State and Local Jurisdiction </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StateAndLocalJurisdictionMember" xlink:to="us-gaap_StateAndLocalJurisdictionMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StateAndLocalJurisdictionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> State And Local Jurisdiction [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncomeTaxContingencyLineItems" xlink:type="locator" xlink:label="us-gaap_IncomeTaxContingencyLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxContingencyLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Income Tax Contingency [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxContingencyLineItems" xlink:to="us-gaap_IncomeTaxContingencyLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxContingencyLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Income Tax Contingency [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_UnrecognizedTaxBenefitsCurrentAndPriorPeriodTaxPositions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unrecognized tax benefit related to state tax issues </label>
<label xml:lang="en-US" xlink:label="tdw_UnrecognizedTaxBenefitsCurrentAndPriorPeriodTaxPositions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unrecognized Tax Benefits Current And Prior Period Tax Positions </label>
<label xml:lang="en-US" xlink:label="tdw_UnrecognizedTaxBenefitInterestIncomeReceivable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Interest receivable on unrecognized tax benefit related to state tax issues </label>
<label xml:lang="en-US" xlink:label="tdw_UnrecognizedTaxBenefitInterestIncomeReceivable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unrecognized Tax Benefit Interest Income Receivable </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfUnrecognizedTaxBenefitsLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfUnrecognizedTaxBenefitsLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUnrecognizedTaxBenefitsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Unrecognized Tax Benefits [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfUnrecognizedTaxBenefitsLineItems" xlink:to="tdw_ScheduleOfUnrecognizedTaxBenefitsLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfUnrecognizedTaxBenefitsTable" xlink:type="locator" xlink:label="tdw_ScheduleOfUnrecognizedTaxBenefitsTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUnrecognizedTaxBenefitsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Unrecognized Tax Benefits [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfUnrecognizedTaxBenefitsTable" xlink:to="tdw_ScheduleOfUnrecognizedTaxBenefitsTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUnrecognizedTaxBenefitsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Unrecognized Tax Benefits [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUnrecognizedTaxBenefitsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Unrecognized Tax Benefits [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUnrecognizedTaxBenefitsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Unrecognized Tax Benefits [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfUnrecognizedTaxBenefitsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Unrecognized Tax Benefits [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefits"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Begining Balance </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefits" xlink:to="us-gaap_UnrecognizedTaxBenefits_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unrecognized Tax Benefits </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additions based on tax positions related to the current year </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions" xlink:to="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additions based on tax positions related to a prior year </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" xlink:to="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Settlement and lapse of statute of limitations </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations" xlink:to="us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Reductions based on tax positions related to a prior year </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" xlink:to="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions </label>
<label xml:lang="en-US" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Ending Balance </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalReductionInNetDeferredTaxAsset" xlink:type="locator" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalReductionInNetDeferredTaxAsset"/>
<label xml:lang="en-US" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalReductionInNetDeferredTaxAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Tax cuts and jobs act of 2017 incomplete accounting provisional reduction in net deferred tax asset. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalReductionInNetDeferredTaxAsset" xlink:to="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalReductionInNetDeferredTaxAsset_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_TaxCutsAndJobsActOf2017IncompleteAccountingChangesInProvisionToNetImpactInIncomeLoss" xlink:type="locator" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingChangesInProvisionToNetImpactInIncomeLoss"/>
<label xml:lang="en-US" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingChangesInProvisionToNetImpactInIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Tax cuts and jobs act Of 2017 incomplete accounting changes in provision to net impact in income loss. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingChangesInProvisionToNetImpactInIncomeLoss" xlink:to="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingChangesInProvisionToNetImpactInIncomeLoss_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_TaxCutsAndJobsActOf2017IncompleteAccountingRecognizedProvisionalDeemedDividend" xlink:type="locator" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingRecognizedProvisionalDeemedDividend"/>
<label xml:lang="en-US" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingRecognizedProvisionalDeemedDividend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Tax cuts and jobs act of 2017 incomplete accounting recognized provisional deemed dividend. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingRecognizedProvisionalDeemedDividend" xlink:to="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingRecognizedProvisionalDeemedDividend_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalReductionInNetDeferredTaxAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reduction in net deferred tax asset </label>
<label xml:lang="en-US" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalReductionInNetDeferredTaxAsset_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Tax Cuts And Jobs Act Of2017 Incomplete Accounting Provisional Reduction In Net Deferred Tax Asset </label>
<label xml:lang="en-US" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingChangesInProvisionToNetImpactInIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net impact in income loss </label>
<label xml:lang="en-US" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingChangesInProvisionToNetImpactInIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Tax Cuts And Jobs Act Of2017 Incomplete Accounting Changes In Provision To Net Impact In Income Loss </label>
<label xml:lang="en-US" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingRecognizedProvisionalDeemedDividend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Recognized provisional deemed dividend </label>
<label xml:lang="en-US" xlink:label="tdw_TaxCutsAndJobsActOf2017IncompleteAccountingRecognizedProvisionalDeemedDividend_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Tax Cuts And Jobs Act Of2017 Incomplete Accounting Recognized Provisional Deemed Dividend </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt Instrument [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument [Table] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_BankTermLoanDueJulyTwoThousandNineteenMember" xlink:type="locator" xlink:label="tdw_BankTermLoanDueJulyTwoThousandNineteenMember"/>
<label xml:lang="en-US" xlink:label="tdw_BankTermLoanDueJulyTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Bank Term Loan Due July Two Thousand Nineteen. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_BankTermLoanDueJulyTwoThousandNineteenMember" xlink:to="tdw_BankTermLoanDueJulyTwoThousandNineteenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_BankTermLoanDueJulyTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Bank Term Loan Due July 2019 </label>
<label xml:lang="en-US" xlink:label="tdw_BankTermLoanDueJulyTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Bank Term Loan Due July Two Thousand Nineteen [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_RevolvingLineOfCreditDueJulyTwoThousandNineteenMember" xlink:type="locator" xlink:label="tdw_RevolvingLineOfCreditDueJulyTwoThousandNineteenMember"/>
<label xml:lang="en-US" xlink:label="tdw_RevolvingLineOfCreditDueJulyTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Revolving Line Of Credit Due July Two Thousand Nineteen. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RevolvingLineOfCreditDueJulyTwoThousandNineteenMember" xlink:to="tdw_RevolvingLineOfCreditDueJulyTwoThousandNineteenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_RevolvingLineOfCreditDueJulyTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Revolving Line Of Credit Due July 2019 </label>
<label xml:lang="en-US" xlink:label="tdw_RevolvingLineOfCreditDueJulyTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Revolving Line Of Credit Due July Two Thousand Nineteen [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ThreePointNineZeroPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember" xlink:type="locator" xlink:label="tdw_ThreePointNineZeroPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember"/>
<label xml:lang="en-US" xlink:label="tdw_ThreePointNineZeroPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Three Point Nine Zero Percent September Two Thousand Ten Senior Notes Due December Two Thousand Seventeen. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ThreePointNineZeroPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember" xlink:to="tdw_ThreePointNineZeroPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ThreePointNineZeroPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 3.90% September 2010 Senior Notes Due December 2017 </label>
<label xml:lang="en-US" xlink:label="tdw_ThreePointNineZeroPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Three Point Nine Zero Percent September Two Thousand Ten Senior Notes Due December Two Thousand Seventeen [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ThreePointNineFivePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember" xlink:type="locator" xlink:label="tdw_ThreePointNineFivePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember"/>
<label xml:lang="en-US" xlink:label="tdw_ThreePointNineFivePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Three Point Nine Five Percent September Two Thousand Ten Senior Notes Due December Two Thousand Seventeen. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ThreePointNineFivePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember" xlink:to="tdw_ThreePointNineFivePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ThreePointNineFivePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 3.95% September 2010 Senior Notes Due December 2017 </label>
<label xml:lang="en-US" xlink:label="tdw_ThreePointNineFivePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandSeventeenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Three Point Nine Five Percent September Two Thousand Ten Senior Notes Due December Two Thousand Seventeen [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FourPointOneTwoPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember" xlink:type="locator" xlink:label="tdw_FourPointOneTwoPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointOneTwoPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Four Point One Two Percent September Two Thousand Ten Senior Notes Due December Two Thousand Eighteen. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FourPointOneTwoPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember" xlink:to="tdw_FourPointOneTwoPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointOneTwoPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 4.12% September 2010 Senior Notes Due December 2018 </label>
<label xml:lang="en-US" xlink:label="tdw_FourPointOneTwoPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Four Point One Two Percent September Two Thousand Ten Senior Notes Due December Two Thousand Eighteen [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FourPointOneSevenPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember" xlink:type="locator" xlink:label="tdw_FourPointOneSevenPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointOneSevenPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Four Point One Seven Percent September Two Thousand Ten Senior Notes Due December Two Thousand Eighteen. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FourPointOneSevenPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember" xlink:to="tdw_FourPointOneSevenPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointOneSevenPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 4.17% September 2010 Senior Notes Due December 2018 </label>
<label xml:lang="en-US" xlink:label="tdw_FourPointOneSevenPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandEighteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Four Point One Seven Percent September Two Thousand Ten Senior Notes Due December Two Thousand Eighteen [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FourPointThreeThreePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandNineteenMember" xlink:type="locator" xlink:label="tdw_FourPointThreeThreePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandNineteenMember"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointThreeThreePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Four Point Three Three Percent September Two Thousand Ten Senior Notes Due December Two Thousand Nineteen. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FourPointThreeThreePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandNineteenMember" xlink:to="tdw_FourPointThreeThreePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandNineteenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointThreeThreePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 4.33% September 2010 Senior Notes Due December 2019 </label>
<label xml:lang="en-US" xlink:label="tdw_FourPointThreeThreePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Four Point Three Three Percent September Two Thousand Ten Senior Notes Due December Two Thousand Nineteen [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FourPointFiveOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember" xlink:type="locator" xlink:label="tdw_FourPointFiveOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointFiveOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Four Point Five One Percent September Two Thousand Ten Senior Notes Due December Two Thousand Twenty. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FourPointFiveOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember" xlink:to="tdw_FourPointFiveOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointFiveOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 4.51% September 2010 Senior Notes Due December 2020 </label>
<label xml:lang="en-US" xlink:label="tdw_FourPointFiveOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Four Point Five One Percent September Two Thousand Ten Senior Notes Due December Two Thousand Twenty [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FourPointFiveSixPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember" xlink:type="locator" xlink:label="tdw_FourPointFiveSixPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointFiveSixPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Four Point Five Six Percent September Two Thousand Ten Senior Notes Due December Two Thousand Twenty. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FourPointFiveSixPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember" xlink:to="tdw_FourPointFiveSixPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointFiveSixPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 4.56% September 2010 Senior Notes Due December 2020 </label>
<label xml:lang="en-US" xlink:label="tdw_FourPointFiveSixPercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Four Point Five Six Percent September Two Thousand Ten Senior Notes Due December Two Thousand Twenty [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FourPointSixOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyTwoMember" xlink:type="locator" xlink:label="tdw_FourPointSixOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyTwoMember"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointSixOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Four Point Six One Percent September Two Thousand Ten Senior Notes Due December Two Thousand Twenty Two. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FourPointSixOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyTwoMember" xlink:to="tdw_FourPointSixOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyTwoMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointSixOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 4.61% September 2010 Senior Notes Due December 2022 </label>
<label xml:lang="en-US" xlink:label="tdw_FourPointSixOnePercentSeptemberTwoThousandTenSeniorNotesDueDecemberTwoThousandTwentyTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Four Point Six One Percent September Two Thousand Ten Senior Notes Due December Two Thousand Twenty Two [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FourPointZeroSixPercentAugustTwoThousandElevenSeniorNotesDueMarchTwoThousandNineteenMember" xlink:type="locator" xlink:label="tdw_FourPointZeroSixPercentAugustTwoThousandElevenSeniorNotesDueMarchTwoThousandNineteenMember"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointZeroSixPercentAugustTwoThousandElevenSeniorNotesDueMarchTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Four Point Zero Six Percent August Two Thousand Eleven Senior Notes Due March Two Thousand Nineteen </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FourPointZeroSixPercentAugustTwoThousandElevenSeniorNotesDueMarchTwoThousandNineteenMember" xlink:to="tdw_FourPointZeroSixPercentAugustTwoThousandElevenSeniorNotesDueMarchTwoThousandNineteenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointZeroSixPercentAugustTwoThousandElevenSeniorNotesDueMarchTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 4.06% August 2011 Senior Notes Due March 2019 </label>
<label xml:lang="en-US" xlink:label="tdw_FourPointZeroSixPercentAugustTwoThousandElevenSeniorNotesDueMarchTwoThousandNineteenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Four Point Zero Six Percent August Two Thousand Eleven Senior Notes Due March Two Thousand Nineteen [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FourPointFiveFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember" xlink:type="locator" xlink:label="tdw_FourPointFiveFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointFiveFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Four Point Five Four Percent August Two Thousand Eleven Senior Notes Due June Two Thousand Twenty One </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FourPointFiveFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember" xlink:to="tdw_FourPointFiveFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointFiveFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 4.54% August 2011 Senior Notes Due June 2021 </label>
<label xml:lang="en-US" xlink:label="tdw_FourPointFiveFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Four Point Five Four Percent August Two Thousand Eleven Senior Notes Due June Two Thousand Twenty One [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FourPointSixFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember" xlink:type="locator" xlink:label="tdw_FourPointSixFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointSixFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Four Point Six Four Percent August Two Thousand Eleven Senior Notes Due June Two Thousand Twenty One. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FourPointSixFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember" xlink:to="tdw_FourPointSixFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointSixFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 4.64% August 2011 Senior Notes Due June 2021 </label>
<label xml:lang="en-US" xlink:label="tdw_FourPointSixFourPercentAugustTwoThousandElevenSeniorNotesDueJuneTwoThousandTwentyOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Four Point Six Four Percent August Two Thousand Eleven Senior Notes Due June Two Thousand Twenty One [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FourPointTwoSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyMember" xlink:type="locator" xlink:label="tdw_FourPointTwoSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyMember"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointTwoSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Four Point Two Six Percent September Two Thousand Thirteen Senior Notes Due November Two Thousand Twenty. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FourPointTwoSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyMember" xlink:to="tdw_FourPointTwoSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FourPointTwoSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 4.26% September 2013 Senior Notes Due November 2020 </label>
<label xml:lang="en-US" xlink:label="tdw_FourPointTwoSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Four Point Two Six Percent September Two Thousand Thirteen Senior Notes Due November Two Thousand Twenty [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FivePointZeroOnePercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyThreeMember" xlink:type="locator" xlink:label="tdw_FivePointZeroOnePercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyThreeMember"/>
<label xml:lang="en-US" xlink:label="tdw_FivePointZeroOnePercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Five Point Zero One Percent September Two Thousand Thirteen Senior Notes Due November Two Thousand Twenty Three. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FivePointZeroOnePercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyThreeMember" xlink:to="tdw_FivePointZeroOnePercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyThreeMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FivePointZeroOnePercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 5.01% September 2013 Senior Notes Due November 2023 </label>
<label xml:lang="en-US" xlink:label="tdw_FivePointZeroOnePercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyThreeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Five Point Zero One Percent September Two Thousand Thirteen Senior Notes Due November Two Thousand Twenty Three [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FivePointOneSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyFiveMember" xlink:type="locator" xlink:label="tdw_FivePointOneSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyFiveMember"/>
<label xml:lang="en-US" xlink:label="tdw_FivePointOneSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Five Point One Six Percent September Two Thousand Thirteen Senior Notes Due November Two Thousand Twenty Five. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FivePointOneSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyFiveMember" xlink:to="tdw_FivePointOneSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyFiveMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FivePointOneSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 5.16% September 2013 Senior Notes Due November 2025 </label>
<label xml:lang="en-US" xlink:label="tdw_FivePointOneSixPercentSeptemberTwoThousandThirteenSeniorNotesDueNovemberTwoThousandTwentyFiveMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Five Point One Six Percent September Two Thousand Thirteen Senior Notes Due November Two Thousand Twenty Five [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NewSecuredNotesMember" xlink:type="locator" xlink:label="tdw_NewSecuredNotesMember"/>
<label xml:lang="en-US" xlink:label="tdw_NewSecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> New Secured Notes. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NewSecuredNotesMember" xlink:to="tdw_NewSecuredNotesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NewSecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> New Secured Notes </label>
<label xml:lang="en-US" xlink:label="tdw_NewSecuredNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> New Secured Notes [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NorwegianKronerDenominatedNotesDueMayTwoThousandTwentyFourMember" xlink:type="locator" xlink:label="tdw_NorwegianKronerDenominatedNotesDueMayTwoThousandTwentyFourMember"/>
<label xml:lang="en-US" xlink:label="tdw_NorwegianKronerDenominatedNotesDueMayTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Norwegian Kroner Denominated Notes Due May Two Thousand Twenty Four. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NorwegianKronerDenominatedNotesDueMayTwoThousandTwentyFourMember" xlink:to="tdw_NorwegianKronerDenominatedNotesDueMayTwoThousandTwentyFourMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NorwegianKronerDenominatedNotesDueMayTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Norwegian Kroner Denominated Notes Due May 2024 </label>
<label xml:lang="en-US" xlink:label="tdw_NorwegianKronerDenominatedNotesDueMayTwoThousandTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Norwegian Kroner Denominated Notes Due May Two Thousand Twenty Four [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NorwegianKronerDenominatedNotesDueJanuaryTwoThousandTwentySixMember" xlink:type="locator" xlink:label="tdw_NorwegianKronerDenominatedNotesDueJanuaryTwoThousandTwentySixMember"/>
<label xml:lang="en-US" xlink:label="tdw_NorwegianKronerDenominatedNotesDueJanuaryTwoThousandTwentySixMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Norwegian Kroner Denominated Notes Due January Two Thousand Twenty Six. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NorwegianKronerDenominatedNotesDueJanuaryTwoThousandTwentySixMember" xlink:to="tdw_NorwegianKronerDenominatedNotesDueJanuaryTwoThousandTwentySixMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NorwegianKronerDenominatedNotesDueJanuaryTwoThousandTwentySixMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Norwegian Kroner Denominated Notes Due January 2026 </label>
<label xml:lang="en-US" xlink:label="tdw_NorwegianKronerDenominatedNotesDueJanuaryTwoThousandTwentySixMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Norwegian Kroner Denominated Notes Due January Two Thousand Twenty Six [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_UnitedStatesDollarDenominatedNotesDueJanuaryTwoThousandTwentySevenMember" xlink:type="locator" xlink:label="tdw_UnitedStatesDollarDenominatedNotesDueJanuaryTwoThousandTwentySevenMember"/>
<label xml:lang="en-US" xlink:label="tdw_UnitedStatesDollarDenominatedNotesDueJanuaryTwoThousandTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> United States Dollar Denominated Notes Due January Two Thousand Twenty Seven. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_UnitedStatesDollarDenominatedNotesDueJanuaryTwoThousandTwentySevenMember" xlink:to="tdw_UnitedStatesDollarDenominatedNotesDueJanuaryTwoThousandTwentySevenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_UnitedStatesDollarDenominatedNotesDueJanuaryTwoThousandTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> United States Dollar Denominated Notes Due January 2027 </label>
<label xml:lang="en-US" xlink:label="tdw_UnitedStatesDollarDenominatedNotesDueJanuaryTwoThousandTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> United States Dollar Denominated Notes Due January Two Thousand Twenty Seven [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_UnitedStatesDollarDenominatedNotesDueAprilTwoThousandTwentySevenMember" xlink:type="locator" xlink:label="tdw_UnitedStatesDollarDenominatedNotesDueAprilTwoThousandTwentySevenMember"/>
<label xml:lang="en-US" xlink:label="tdw_UnitedStatesDollarDenominatedNotesDueAprilTwoThousandTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> United States Dollar Denominated Notes Due April Two Thousand Twenty Seven. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_UnitedStatesDollarDenominatedNotesDueAprilTwoThousandTwentySevenMember" xlink:to="tdw_UnitedStatesDollarDenominatedNotesDueAprilTwoThousandTwentySevenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_UnitedStatesDollarDenominatedNotesDueAprilTwoThousandTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> United States Dollar Denominated Notes Due April 2027 </label>
<label xml:lang="en-US" xlink:label="tdw_UnitedStatesDollarDenominatedNotesDueAprilTwoThousandTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> United States Dollar Denominated Notes Due April Two Thousand Twenty Seven [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument [Line Items] </label>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Amount outstanding </label>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Outstanding borrowing </label>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentUnamortizedPremium_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Premium </label>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Discount </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:type="locator" xlink:label="us-gaap_DeferredFinanceCostsNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Less: Deferred debt issue costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredFinanceCostsNet" xlink:to="us-gaap_DeferredFinanceCostsNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Finance Costs Net </label>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Less: Current portion of long-term debt </label>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total long-term debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentMaturityDateDescription" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentMaturityDateDescription"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDateDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt Instrument Maturity Period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentMaturityDateDescription" xlink:to="us-gaap_DebtInstrumentMaturityDateDescription_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDateDescription_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Maturity Date Description </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument interest rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Interest Rate Stated Percentage </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value, Hierarchy </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value By Fair Value Hierarchy Level [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value Hierarchy </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Measurements Fair Value Hierarchy [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel2Member"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Level 2 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel2Member" xlink:to="us-gaap_FairValueInputsLevel2Member_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Inputs Level2 [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentMaturityDate"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument maturity date </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentMaturityDate" xlink:to="us-gaap_DebtInstrumentMaturityDate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Maturity Date </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentInterestRateTerms" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateTerms"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateTerms_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument interest term </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateTerms" xlink:to="us-gaap_DebtInstrumentInterestRateTerms_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentInterestRateTerms_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Interest Rate Terms </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentFrequencyOfPeriodicPayment" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument frequency of periodic payment of interest </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment" xlink:to="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Frequency Of Periodic Payment </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault" xlink:type="locator" xlink:label="us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt Instrument default description </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault" xlink:to="us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefaultLongtermDebtDescriptionOfViolationOrEventOfDefault_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Default Longterm Debt Description Of Violation Or Event Of Default </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PercentageOfAssetSaleProceedsUsedToRepurchaseNotesAtParAmount" xlink:type="locator" xlink:label="tdw_PercentageOfAssetSaleProceedsUsedToRepurchaseNotesAtParAmount"/>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfAssetSaleProceedsUsedToRepurchaseNotesAtParAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Percentage of asset sale proceeds used to repurchase notes at par amount. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PercentageOfAssetSaleProceedsUsedToRepurchaseNotesAtParAmount" xlink:to="tdw_PercentageOfAssetSaleProceedsUsedToRepurchaseNotesAtParAmount_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DebtInstrumentRepurchasePeriod" xlink:type="locator" xlink:label="tdw_DebtInstrumentRepurchasePeriod"/>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentRepurchasePeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Debt instrument repurchase period. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DebtInstrumentRepurchasePeriod" xlink:to="tdw_DebtInstrumentRepurchasePeriod_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentCollateral" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentCollateral"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentCollateral_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument collateral description </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCollateral" xlink:to="us-gaap_DebtInstrumentCollateral_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentCollateral_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Collateral </label>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfAssetSaleProceedsUsedToRepurchaseNotesAtParAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of asset sale proceeds to repurchase notes at par amount </label>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfAssetSaleProceedsUsedToRepurchaseNotesAtParAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Percentage Of Asset Sale Proceeds Used To Repurchase Notes At Par Amount </label>
<label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromSaleOfProductiveAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Net proceeds of each qualified asset sale </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentFairValue" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentFairValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair value in U.S. dollar equivalent </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFairValue" xlink:to="us-gaap_DebtInstrumentFairValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Fair Value </label>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentRepurchasePeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument repurchase period </label>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentRepurchasePeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Repurchase Period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentRepurchaseAmount" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentRepurchaseAmount"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRepurchaseAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument repurchase accumulation amount </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRepurchaseAmount" xlink:to="us-gaap_DebtInstrumentRepurchaseAmount_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRepurchaseAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Repurchase Amount </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PrepackagedPlanEffectiveDate" xlink:type="locator" xlink:label="tdw_PrepackagedPlanEffectiveDate"/>
<label xml:lang="en-US" xlink:label="tdw_PrepackagedPlanEffectiveDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Prepackaged plan effective date. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PrepackagedPlanEffectiveDate" xlink:to="tdw_PrepackagedPlanEffectiveDate_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ModificationDescriptionOfDebtInstrument" xlink:type="locator" xlink:label="tdw_ModificationDescriptionOfDebtInstrument"/>
<label xml:lang="en-US" xlink:label="tdw_ModificationDescriptionOfDebtInstrument_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Modification description of debt instrument. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ModificationDescriptionOfDebtInstrument" xlink:to="tdw_ModificationDescriptionOfDebtInstrument_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PercentageOfRequiredPrincipalPaymentsDueFromEffectiveDate" xlink:type="locator" xlink:label="tdw_PercentageOfRequiredPrincipalPaymentsDueFromEffectiveDate"/>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfRequiredPrincipalPaymentsDueFromEffectiveDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Percentage of required principal payments due from effective date. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PercentageOfRequiredPrincipalPaymentsDueFromEffectiveDate" xlink:to="tdw_PercentageOfRequiredPrincipalPaymentsDueFromEffectiveDate_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfVesselsMortgaged" xlink:type="locator" xlink:label="tdw_NumberOfVesselsMortgaged"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsMortgaged_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of vessels mortgaged. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfVesselsMortgaged" xlink:to="tdw_NumberOfVesselsMortgaged_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_SeniorNotesDueInAprilTwentyTwentySevenMember" xlink:type="locator" xlink:label="tdw_SeniorNotesDueInAprilTwentyTwentySevenMember"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueInAprilTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Senior Notes Due in April Twenty Twenty Seven [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SeniorNotesDueInAprilTwentyTwentySevenMember" xlink:to="tdw_SeniorNotesDueInAprilTwentyTwentySevenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueInAprilTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Notes Due April 2027 </label>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueInAprilTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Senior Notes Due In April Twenty Twenty Seven [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SeniorNotesDueInJanuaryTwentyTwentySevenMember" xlink:type="locator" xlink:label="tdw_SeniorNotesDueInJanuaryTwentyTwentySevenMember"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueInJanuaryTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Senior Notes Due In January Twenty Twenty Seven [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SeniorNotesDueInJanuaryTwentyTwentySevenMember" xlink:to="tdw_SeniorNotesDueInJanuaryTwentyTwentySevenMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueInJanuaryTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Notes Due January 2027 </label>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueInJanuaryTwentyTwentySevenMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Senior Notes Due In January Twenty Twenty Seven [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SeniorNotesDueTwentyTwentySixMember" xlink:type="locator" xlink:label="tdw_SeniorNotesDueTwentyTwentySixMember"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueTwentyTwentySixMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Senior Notes Due Twenty Twenty Six [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SeniorNotesDueTwentyTwentySixMember" xlink:to="tdw_SeniorNotesDueTwentyTwentySixMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueTwentyTwentySixMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Notes Due January 2026 </label>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueTwentyTwentySixMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Senior Notes Due Twenty Twenty Six [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SeniorNotesDueTwentyTwentyFourMember" xlink:type="locator" xlink:label="tdw_SeniorNotesDueTwentyTwentyFourMember"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueTwentyTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Senior Notes Due 2024 [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SeniorNotesDueTwentyTwentyFourMember" xlink:to="tdw_SeniorNotesDueTwentyTwentyFourMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueTwentyTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Notes Due May 2024 </label>
<label xml:lang="en-US" xlink:label="tdw_SeniorNotesDueTwentyTwentyFourMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Senior Notes Due Twenty Twenty Four [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_PrepackagedPlanEffectiveDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Plan effective date </label>
<label xml:lang="en-US" xlink:label="tdw_PrepackagedPlanEffectiveDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Prepackaged Plan Effective Date </label>
<label xml:lang="en-US" xlink:label="tdw_ModificationDescriptionOfDebtInstrument_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Modification description of debt instrument </label>
<label xml:lang="en-US" xlink:label="tdw_ModificationDescriptionOfDebtInstrument_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Modification Description Of Debt Instrument </label>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfRequiredPrincipalPaymentsDueFromEffectiveDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of required principal payments due from effective date </label>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfRequiredPrincipalPaymentsDueFromEffectiveDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Percentage Of Required Principal Payments Due From Effective Date </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsMortgaged_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of vessels mortgaged </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsMortgaged_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Vessels Mortgaged </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DebtInstrumentMaturityMonthAndYear" xlink:type="locator" xlink:label="tdw_DebtInstrumentMaturityMonthAndYear"/>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentMaturityMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Debt Instrument, Maturity, Month and Year </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DebtInstrumentMaturityMonthAndYear" xlink:to="tdw_DebtInstrumentMaturityMonthAndYear_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DebtInstrumentAggregateRate" xlink:type="locator" xlink:label="tdw_DebtInstrumentAggregateRate"/>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentAggregateRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Debt Instrument Aggregate Rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DebtInstrumentAggregateRate" xlink:to="tdw_DebtInstrumentAggregateRate_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DebtInstrumentSubTranchePremiumRate" xlink:type="locator" xlink:label="tdw_DebtInstrumentSubTranchePremiumRate"/>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentSubTranchePremiumRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Debt instrument sub-tranche premium rate. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DebtInstrumentSubTranchePremiumRate" xlink:to="tdw_DebtInstrumentSubTranchePremiumRate_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_CapitalizationRate" xlink:type="locator" xlink:label="tdw_CapitalizationRate"/>
<label xml:lang="en-US" xlink:label="tdw_CapitalizationRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Capitalization Rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CapitalizationRate" xlink:to="tdw_CapitalizationRate_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentMaturityMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument maturity, month and year </label>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentMaturityMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Maturity Month And Year </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentPeriodicPaymentPrincipal" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Semi-annual principal payments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentPeriodicPaymentPrincipal" xlink:to="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentPrincipal_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Periodic Payment Principal </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermDebtPercentageBearingVariableInterestRate" xlink:type="locator" xlink:label="us-gaap_LongTermDebtPercentageBearingVariableInterestRate"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtPercentageBearingVariableInterestRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument bearing floating interest rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermDebtPercentageBearingVariableInterestRate" xlink:to="us-gaap_LongTermDebtPercentageBearingVariableInterestRate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebtPercentageBearingVariableInterestRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Long Term Debt Percentage Bearing Variable Interest Rate </label>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentAggregateRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Indebtedness rate </label>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentAggregateRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Aggregate Rate </label>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentSubTranchePremiumRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Indebtedness sub-tranche premium rate </label>
<label xml:lang="en-US" xlink:label="tdw_DebtInstrumentSubTranchePremiumRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Sub Tranche Premium Rate </label>
<label xml:lang="en-US" xlink:label="tdw_CapitalizationRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Total capitalization rate </label>
<label xml:lang="en-US" xlink:label="tdw_CapitalizationRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Capitalization Rate </label>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument outstanding amount </label>
<loc xlink:href="tdw-20171231.xsd#tdw_MayTwoThousandFifteenAndFourPointTwentyTwoPercentUnitedStatesDollarDenominatedBorrowingAgreementMember" xlink:type="locator" xlink:label="tdw_MayTwoThousandFifteenAndFourPointTwentyTwoPercentUnitedStatesDollarDenominatedBorrowingAgreementMember"/>
<label xml:lang="en-US" xlink:label="tdw_MayTwoThousandFifteenAndFourPointTwentyTwoPercentUnitedStatesDollarDenominatedBorrowingAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> May two thousand fifteen and four point twenty two percent united states dollar denominated borrowing agreement. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_MayTwoThousandFifteenAndFourPointTwentyTwoPercentUnitedStatesDollarDenominatedBorrowingAgreementMember" xlink:to="tdw_MayTwoThousandFifteenAndFourPointTwentyTwoPercentUnitedStatesDollarDenominatedBorrowingAgreementMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_MayTwoThousandFifteenAndFourPointTwentyTwoPercentUnitedStatesDollarDenominatedBorrowingAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> May 2015 notes </label>
<label xml:lang="en-US" xlink:label="tdw_MayTwoThousandFifteenAndFourPointTwentyTwoPercentUnitedStatesDollarDenominatedBorrowingAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> May Two Thousand Fifteen And Four Point Twenty Two Percent United States Dollar Denominated Borrowing Agreement [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_MarchTwoThousandFifteenAndFourPointTwentyOnePercentUnitedStatesDollarDenominatedBorrowingAgreementMember" xlink:type="locator" xlink:label="tdw_MarchTwoThousandFifteenAndFourPointTwentyOnePercentUnitedStatesDollarDenominatedBorrowingAgreementMember"/>
<label xml:lang="en-US" xlink:label="tdw_MarchTwoThousandFifteenAndFourPointTwentyOnePercentUnitedStatesDollarDenominatedBorrowingAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> March two thousand fifteen and four point twenty one percent united states dollar denominated borrowing agreement. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_MarchTwoThousandFifteenAndFourPointTwentyOnePercentUnitedStatesDollarDenominatedBorrowingAgreementMember" xlink:to="tdw_MarchTwoThousandFifteenAndFourPointTwentyOnePercentUnitedStatesDollarDenominatedBorrowingAgreementMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_MarchTwoThousandFifteenAndFourPointTwentyOnePercentUnitedStatesDollarDenominatedBorrowingAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> March 2015 notes </label>
<label xml:lang="en-US" xlink:label="tdw_MarchTwoThousandFifteenAndFourPointTwentyOnePercentUnitedStatesDollarDenominatedBorrowingAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> March Two Thousand Fifteen And Four Point Twenty One Percent United States Dollar Denominated Borrowing Agreement [Member] </label>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel"> Amount outstanding </label>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Fair value of debt outstanding </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NotesPayableOneMember" xlink:type="locator" xlink:label="tdw_NotesPayableOneMember"/>
<label xml:lang="en-US" xlink:label="tdw_NotesPayableOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Notes Payable One [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NotesPayableOneMember" xlink:to="tdw_NotesPayableOneMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NotesPayableOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> January 2014 notes </label>
<label xml:lang="en-US" xlink:label="tdw_NotesPayableOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Notes Payable One [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NotesPayableTwoMember" xlink:type="locator" xlink:label="tdw_NotesPayableTwoMember"/>
<label xml:lang="en-US" xlink:label="tdw_NotesPayableTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Notes Payable Two [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NotesPayableTwoMember" xlink:to="tdw_NotesPayableTwoMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NotesPayableTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> May 2012 notes </label>
<label xml:lang="en-US" xlink:label="tdw_NotesPayableTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Notes Payable Two [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Lender Name </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityAxis" xlink:to="us-gaap_LineOfCreditFacilityAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Line Of Credit Facility [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Line of Credit Facility, Lender </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityLenderDomain" xlink:to="us-gaap_LineOfCreditFacilityLenderDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Line Of Credit Facility Lender [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_CurrentBankLoanAgreementMember" xlink:type="locator" xlink:label="tdw_CurrentBankLoanAgreementMember"/>
<label xml:lang="en-US" xlink:label="tdw_CurrentBankLoanAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Current bank loan agreement. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CurrentBankLoanAgreementMember" xlink:to="tdw_CurrentBankLoanAgreementMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_CurrentBankLoanAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Current Bank Loan Agreement </label>
<label xml:lang="en-US" xlink:label="tdw_CurrentBankLoanAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Current Bank Loan Agreement [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_RevolvingCreditAgreementMember" xlink:type="locator" xlink:label="tdw_RevolvingCreditAgreementMember"/>
<label xml:lang="en-US" xlink:label="tdw_RevolvingCreditAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Revolving Credit Agreement [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RevolvingCreditAgreementMember" xlink:to="tdw_RevolvingCreditAgreementMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_RevolvingCreditAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Revolving Credit Agreement </label>
<label xml:lang="en-US" xlink:label="tdw_RevolvingCreditAgreementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Revolving Credit Agreement [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentCovenantCompliance" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentCovenantCompliance"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentCovenantCompliance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Covenant compliance description </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentCovenantCompliance" xlink:to="us-gaap_DebtInstrumentCovenantCompliance_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentCovenantCompliance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Covenant Compliance </label>
<loc xlink:href="tdw-20171231.xsd#tdw_LineOfCreditFacilityExpirationDates" xlink:type="locator" xlink:label="tdw_LineOfCreditFacilityExpirationDates"/>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditFacilityExpirationDates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Line of Credit Facility Expiration Dates </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_LineOfCreditFacilityExpirationDates" xlink:to="tdw_LineOfCreditFacilityExpirationDates_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_LineOfCreditFacilityRevolvingLineOfCredit" xlink:type="locator" xlink:label="tdw_LineOfCreditFacilityRevolvingLineOfCredit"/>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditFacilityRevolvingLineOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Line of credit facility, revolving line of credit </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_LineOfCreditFacilityRevolvingLineOfCredit" xlink:to="tdw_LineOfCreditFacilityRevolvingLineOfCredit_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_LineOfCreditFacilityTermLoan" xlink:type="locator" xlink:label="tdw_LineOfCreditFacilityTermLoan"/>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditFacilityTermLoan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Line of credit facility, term loan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_LineOfCreditFacilityTermLoan" xlink:to="tdw_LineOfCreditFacilityTermLoan_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditFacilityExpirationDates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Bank loan agreement expiration date </label>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditFacilityExpirationDates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Line Of Credit Facility Expiration Dates </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Revolving credit facility </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:to="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Line Of Credit Facility Maximum Borrowing Capacity </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationPeriod" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityExpirationPeriod"/>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityExpirationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Credit facility term </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LineOfCreditFacilityExpirationPeriod" xlink:to="us-gaap_LineOfCreditFacilityExpirationPeriod_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCreditFacilityExpirationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Line Of Credit Facility Expiration Period </label>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditFacilityRevolvingLineOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Revolving line of credit </label>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditFacilityRevolvingLineOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Line Of Credit Facility Revolving Line Of Credit </label>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditFacilityTermLoan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Term loan </label>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditFacilityTermLoan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Line Of Credit Facility Term Loan </label>
<loc xlink:href="tdw-20171231.xsd#tdw_LineOfCreditEstimatedFairMarketValue" xlink:type="locator" xlink:label="tdw_LineOfCreditEstimatedFairMarketValue"/>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditEstimatedFairMarketValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Line of credit estimated fair market value. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_LineOfCreditEstimatedFairMarketValue" xlink:to="tdw_LineOfCreditEstimatedFairMarketValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LineOfCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Outstanding borrowing </label>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditEstimatedFairMarketValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Estimated fair market value of the borrowing </label>
<label xml:lang="en-US" xlink:label="tdw_LineOfCreditEstimatedFairMarketValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Line Of Credit Estimated Fair Market Value </label>
<label xml:lang="en-US" xlink:label="tdw_NotesIssuableInExchangeFaceAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Senior note issuable amount under purchase agreement </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromIssuanceOfUnsecuredDebt" xlink:type="locator" xlink:label="us-gaap_ProceedsFromIssuanceOfUnsecuredDebt"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromIssuanceOfUnsecuredDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sale of debt outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfUnsecuredDebt" xlink:to="us-gaap_ProceedsFromIssuanceOfUnsecuredDebt_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromIssuanceOfUnsecuredDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds From Issuance Of Unsecured Debt </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTerm"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt instrument maturity, in years </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentTerm" xlink:to="us-gaap_DebtInstrumentTerm_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentTerm_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Instrument Term </label>
<loc xlink:href="tdw-20171231.xsd#tdw_WeightedAverageLifeToMaturity" xlink:type="locator" xlink:label="tdw_WeightedAverageLifeToMaturity"/>
<label xml:lang="en-US" xlink:label="tdw_WeightedAverageLifeToMaturity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Weighted Average Life To Maturity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_WeightedAverageLifeToMaturity" xlink:to="tdw_WeightedAverageLifeToMaturity_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnsecuredDebt_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Aggregate debt outstanding </label>
<label xml:lang="en-US" xlink:label="tdw_WeightedAverageLifeToMaturity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted average remaining life in years </label>
<label xml:lang="en-US" xlink:label="tdw_WeightedAverageLifeToMaturity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Weighted Average Life To Maturity </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtWeightedAverageInterestRate" xlink:type="locator" xlink:label="us-gaap_DebtWeightedAverageInterestRate"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtWeightedAverageInterestRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted average coupon rate on notes outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtWeightedAverageInterestRate" xlink:to="us-gaap_DebtWeightedAverageInterestRate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtWeightedAverageInterestRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Weighted Average Interest Rate </label>
<label xml:lang="en-US" xlink:label="us-gaap_InterestAndDebtExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Interest and debt costs incurred, net of interest capitalized </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestCostsCapitalized" xlink:type="locator" xlink:label="us-gaap_InterestCostsCapitalized"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestCostsCapitalized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Interest costs capitalized </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestCostsCapitalized" xlink:to="us-gaap_InterestCostsCapitalized_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestCostsCapitalized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Interest Costs Capitalized </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestCostsIncurred" xlink:type="locator" xlink:label="us-gaap_InterestCostsIncurred"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestCostsIncurred_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total interest and debt costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestCostsIncurred" xlink:to="us-gaap_InterestCostsIncurred_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestCostsIncurred_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Interest Costs Incurred </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanNumberOfEmployeesParticipating" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanNumberOfEmployeesParticipating"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanNumberOfEmployeesParticipating_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Benefit Plan, Number of Employees Participating </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanNumberOfEmployeesParticipating" xlink:to="tdw_DefinedBenefitPlanNumberOfEmployeesParticipating_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanNumberOfEmployeesRemainingInPlan" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanNumberOfEmployeesRemainingInPlan"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanNumberOfEmployeesRemainingInPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Benefit Plan Number of Employees Remaining In Plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanNumberOfEmployeesRemainingInPlan" xlink:to="tdw_DefinedBenefitPlanNumberOfEmployeesRemainingInPlan_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Defined Benefit Plans Disclosures [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Defined Benefit Plans Disclosures [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retirement Plan Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Retirement Plan Type [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retirement Plan Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_RetirementPlanTypeDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Retirement Plan Type [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_PensionPlansDefinedBenefitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Pension Plans, Defined Benefit </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PensionPlansDefinedBenefitMember" xlink:to="us-gaap_PensionPlansDefinedBenefitMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PensionPlansDefinedBenefitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Pension Plans Defined Benefit [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Supplemental Executive Retirement Plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember" xlink:to="us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Supplemental Employee Retirement Plan Defined Benefit [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScenarioForecastMember" xlink:type="locator" xlink:label="us-gaap_ScenarioForecastMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScenarioForecastMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Scenario, Forecast </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScenarioForecastMember" xlink:to="us-gaap_ScenarioForecastMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScenarioForecastMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Scenario Forecast [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TitleOfIndividualAxis" xlink:type="locator" xlink:label="us-gaap_TitleOfIndividualAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_TitleOfIndividualAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Title of Individual </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TitleOfIndividualAxis" xlink:to="us-gaap_TitleOfIndividualAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_TitleOfIndividualAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Title Of Individual [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:type="locator" xlink:label="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Relationship to Entity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain" xlink:to="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Title Of Individual With Relationship To Entity [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OfficerMember" xlink:type="locator" xlink:label="us-gaap_OfficerMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_OfficerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> President, and Chief Executive Officer [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OfficerMember" xlink:to="us-gaap_OfficerMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OfficerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Officer [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPostretirementHealthCoverageMember" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPostretirementHealthCoverageMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPostretirementHealthCoverageMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Postretirement Benefit Plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPostretirementHealthCoverageMember" xlink:to="us-gaap_DefinedBenefitPostretirementHealthCoverageMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPostretirementHealthCoverageMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Postretirement Health Coverage [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_RetirementPlansContributionsMember" xlink:type="locator" xlink:label="tdw_RetirementPlansContributionsMember"/>
<label xml:lang="en-US" xlink:label="tdw_RetirementPlansContributionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Retirement Plans Contributions [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RetirementPlansContributionsMember" xlink:to="tdw_RetirementPlansContributionsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_RetirementPlansContributionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retirement Contributions </label>
<label xml:lang="en-US" xlink:label="tdw_RetirementPlansContributionsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Retirement Plans Contributions [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedContributionSavingPlanFourZeroOneKMember" xlink:type="locator" xlink:label="tdw_DefinedContributionSavingPlanFourZeroOneKMember"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionSavingPlanFourZeroOneKMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined contribution saving plan 401k. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedContributionSavingPlanFourZeroOneKMember" xlink:to="tdw_DefinedContributionSavingPlanFourZeroOneKMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionSavingPlanFourZeroOneKMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined Contribution Savings Plan 401k </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionSavingPlanFourZeroOneKMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Saving Plan Four Zero One K [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NonQualifiedSupplementalSavingsPlanExecutivesMember" xlink:type="locator" xlink:label="tdw_NonQualifiedSupplementalSavingsPlanExecutivesMember"/>
<label xml:lang="en-US" xlink:label="tdw_NonQualifiedSupplementalSavingsPlanExecutivesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Non Qualified Supplemental Savings Plan Executives [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NonQualifiedSupplementalSavingsPlanExecutivesMember" xlink:to="tdw_NonQualifiedSupplementalSavingsPlanExecutivesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NonQualifiedSupplementalSavingsPlanExecutivesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Non-Qualified Supplemental Savings Plan Executives </label>
<label xml:lang="en-US" xlink:label="tdw_NonQualifiedSupplementalSavingsPlanExecutivesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Non Qualified Supplemental Savings Plan Executives [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NorwaysDefinedBenefitPensionPlanMember" xlink:type="locator" xlink:label="tdw_NorwaysDefinedBenefitPensionPlanMember"/>
<label xml:lang="en-US" xlink:label="tdw_NorwaysDefinedBenefitPensionPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Norway’s defined benefit pension plan. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NorwaysDefinedBenefitPensionPlanMember" xlink:to="tdw_NorwaysDefinedBenefitPensionPlanMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NorwaysDefinedBenefitPensionPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Norway?s Defined Benefit Pension Plan </label>
<label xml:lang="en-US" xlink:label="tdw_NorwaysDefinedBenefitPensionPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Norways Defined Benefit Pension Plan [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined Benefit Plan Disclosure [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Disclosure [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanNumberOfEmployeesParticipating_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of employers participated in defined benefit plan </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanNumberOfEmployeesParticipating_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Number Of Employees Participating </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanNumberOfEmployeesRemainingInPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of employers still remains in defined benefit plan </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanNumberOfEmployeesRemainingInPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Number Of Employees Remaining In Plan </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanContributionsByEmployer"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanContributionsByEmployer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined benefit plan, employer contributions </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:to="us-gaap_DefinedBenefitPlanContributionsByEmployer_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanContributionsByEmployer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Contributions By Employer </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualDistributionPaid" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualDistributionPaid"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualDistributionPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Settlement of distribution </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualDistributionPaid" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualDistributionPaid_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualDistributionPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Arrangement With Individual Distribution Paid </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Settlement loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" xlink:to="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanSupplementalPlanObligations" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanSupplementalPlanObligations"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanSupplementalPlanObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Benefit Plan Supplemental Plan Obligations </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanSupplementalPlanObligations" xlink:to="tdw_DefinedBenefitPlanSupplementalPlanObligations_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCompensationPlanAssets" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationPlanAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investments held in Rabbi Trust </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationPlanAssets" xlink:to="us-gaap_DeferredCompensationPlanAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Plan Assets </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanSupplementalPlanObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Obligations under the supplemental plan </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanSupplementalPlanObligations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Supplemental Plan Obligations </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TrustAssetsCarryingValueNet" xlink:type="locator" xlink:label="tdw_TrustAssetsCarryingValueNet"/>
<label xml:lang="en-US" xlink:label="tdw_TrustAssetsCarryingValueNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Trust assets, carrying value, net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TrustAssetsCarryingValueNet" xlink:to="tdw_TrustAssetsCarryingValueNet_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_TrustAssetsCarryingValueIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="tdw_TrustAssetsCarryingValueIncomeTaxExpenseBenefit"/>
<label xml:lang="en-US" xlink:label="tdw_TrustAssetsCarryingValueIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Trust assets carrying value income tax expense benefit. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TrustAssetsCarryingValueIncomeTaxExpenseBenefit" xlink:to="tdw_TrustAssetsCarryingValueIncomeTaxExpenseBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_TrustAssetsCarryingValueNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unrealized gain (loss) in carrying value of trust assets </label>
<label xml:lang="en-US" xlink:label="tdw_TrustAssetsCarryingValueNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Trust Assets Carrying Value Net </label>
<label xml:lang="en-US" xlink:label="tdw_TrustAssetsCarryingValueIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unrealized loss in carrying value of trust assets are net of income tax expense of </label>
<label xml:lang="en-US" xlink:label="tdw_TrustAssetsCarryingValueIncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Trust Assets Carrying Value Income Tax Expense Benefit </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PostretirementBenefitPlanObligationsReduction" xlink:type="locator" xlink:label="tdw_PostretirementBenefitPlanObligationsReduction"/>
<label xml:lang="en-US" xlink:label="tdw_PostretirementBenefitPlanObligationsReduction_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postretirement benefit plan obligations reduction. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostretirementBenefitPlanObligationsReduction" xlink:to="tdw_PostretirementBenefitPlanObligationsReduction_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PostretirementBenefitPlanObligationsReduction_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Postretirement benefit plan obligations reduction </label>
<label xml:lang="en-US" xlink:label="tdw_PostretirementBenefitPlanObligationsReduction_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postretirement Benefit Plan Obligations Reduction </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAmendments" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPlanAmendments"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAmendments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additional estimated net periodic benefit </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanPlanAmendments" xlink:to="us-gaap_DefinedBenefitPlanPlanAmendments_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAmendments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Plan Amendments </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostemploymentBenefitsAbstract" xlink:type="locator" xlink:label="us-gaap_PostemploymentBenefitsAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostemploymentBenefitsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postemployment Benefits [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostemploymentBenefitsAbstract" xlink:to="us-gaap_PostemploymentBenefitsAbstract_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsLineItems" xlink:to="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsTable" xlink:type="locator" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsTable" xlink:to="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Pension And Other Postretirement Benefits Expected Benefit Payments [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Pension And Other Postretirement Benefits Expected Benefit Payments [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined Benefit Plan, Asset Categories </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:to="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan By Plan Asset Categories [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:type="locator" xlink:label="us-gaap_PlanAssetCategoriesDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_PlanAssetCategoriesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Plan Asset Categories </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_PlanAssetCategoriesDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PlanAssetCategoriesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Plan Asset Categories [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:type="locator" xlink:label="us-gaap_EquitySecuritiesMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquitySecuritiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Equity Securities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquitySecuritiesMember" xlink:to="us-gaap_EquitySecuritiesMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquitySecuritiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Securities [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtSecuritiesMember" xlink:type="locator" xlink:label="us-gaap_DebtSecuritiesMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtSecuritiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Debt Securities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtSecuritiesMember" xlink:to="us-gaap_DebtSecuritiesMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtSecuritiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Securities [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsMember" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash and Cash Equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsMember" xlink:to="us-gaap_CashAndCashEquivalentsMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cash And Cash Equivalents [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Pension and Other Postretirement Benefits Expected Benefit Payments [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsExpectedBenefitPaymentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Pension And Other Postretirement Benefits Expected Benefit Payments [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Expected Rate of Return on Plan Assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:to="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanActuarialDiscountRateAssumption" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanActuarialDiscountRateAssumption"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanActuarialDiscountRateAssumption_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Benefit Plan, Actuarial Discount Rate Assumption </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanActuarialDiscountRateAssumption" xlink:to="tdw_DefinedBenefitPlanActuarialDiscountRateAssumption_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanActuarialDiscountRateAssumption_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of defined benefit plan, actuarial discount rate assumption </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanActuarialDiscountRateAssumption_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Actuarial Discount Rate Assumption </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Pension and Other Postretirement Plan Assets by Fair Value [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueLineItems" xlink:to="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueTable" xlink:type="locator" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule Of Pension And Other Postretirement Plan Assets By Fair Value [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueTable" xlink:to="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Pension And Other Postretirement Plan Assets By Fair Value [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Pension And Other Postretirement Plan Assets By Fair Value [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InvestmentTypeAxis" xlink:type="locator" xlink:label="us-gaap_InvestmentTypeAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investment Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentTypeAxis" xlink:to="us-gaap_InvestmentTypeAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Investment Type [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:type="locator" xlink:label="us-gaap_InvestmentTypeCategorizationMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentTypeCategorizationMember" xlink:to="us-gaap_InvestmentTypeCategorizationMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Investment Type Categorization [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_InvestmentGradeBondsMember" xlink:type="locator" xlink:label="tdw_InvestmentGradeBondsMember"/>
<label xml:lang="en-US" xlink:label="tdw_InvestmentGradeBondsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Investment Grade Bonds [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_InvestmentGradeBondsMember" xlink:to="tdw_InvestmentGradeBondsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_InvestmentGradeBondsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investment Grade Bonds </label>
<label xml:lang="en-US" xlink:label="tdw_InvestmentGradeBondsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Investment Grade Bonds [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Pension and Other Postretirement Plan Assets by Fair Value [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementPlanAssetsByFairValueLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Pension And Other Postretirement Plan Assets By Fair Value [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Market value objective for plan assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage" xlink:to="us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Plan Assets Target Allocation Percentage </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retirement Plan Sponsor Location </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Retirement Plan Sponsor Location [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Retirement Plan Sponsor Location </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Retirement Plan Sponsor Location [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_DomesticPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Domestic Plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DomesticPlanMember" xlink:to="us-gaap_DomesticPlanMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DomesticPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Domestic Plan [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_CashAndOtherMember" xlink:type="locator" xlink:label="tdw_CashAndOtherMember"/>
<label xml:lang="en-US" xlink:label="tdw_CashAndOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Cash And Other [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CashAndOtherMember" xlink:to="tdw_CashAndOtherMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_CashAndOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash And Other </label>
<label xml:lang="en-US" xlink:label="tdw_CashAndOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cash And Other [Member] </label>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Target asset allocation </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Actual asset allocations </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations" xlink:to="us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Weighted Average Asset Allocations </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanSignificantConcentrationsOfRisk" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanSignificantConcentrationsOfRisk"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanSignificantConcentrationsOfRisk_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined benefit plan, significant concentrations of risk </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanSignificantConcentrationsOfRisk" xlink:to="us-gaap_DefinedBenefitPlanSignificantConcentrationsOfRisk_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanSignificantConcentrationsOfRisk_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Significant Concentrations Of Risk </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesDifferencePlanAssetsAndLiabilities" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesDifferencePlanAssetsAndLiabilities"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesDifferencePlanAssetsAndLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Benefit Plan, Concentration Risk, Assets, Equity Securities, Difference plan assets and liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesDifferencePlanAssetsAndLiabilities" xlink:to="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesDifferencePlanAssetsAndLiabilities_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesMaximumOfForeignAndUsStock" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesMaximumOfForeignAndUsStock"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesMaximumOfForeignAndUsStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Benefit Plan, Concentration Risk, Assets, Equity Securities, Maximum of Foreign and US Stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesMaximumOfForeignAndUsStock" xlink:to="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesMaximumOfForeignAndUsStock_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesDifferencePlanAssetsAndLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined benefit plan, concentration risk, assets, equity securities, difference plan assets and liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesDifferencePlanAssetsAndLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Concentration Risk Assets Equity Securities Difference Plan Assets And Liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesMaximumOfForeignAndUsStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined benefit plan, concentration risk, assets, equity securities, maximum foreign and us stock </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskAssetsEquitySecuritiesMaximumOfForeignAndUsStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Concentration Risk Assets Equity Securities Maximum Of Foreign And Us Stock </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleIndustry" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleIndustry"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleIndustry_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Benefit Plan, Concentration Risk, Diversification, Equity Limit, Single Industry </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleIndustry" xlink:to="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleIndustry_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleCorporation" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleCorporation"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleCorporation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Benefit Plan, Concentration Risk, Diversification, Equity Limit, Single Corporation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleCorporation" xlink:to="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleCorporation_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanConcentrationRiskDiversificationDebtLimitSingleIssuer" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationDebtLimitSingleIssuer"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationDebtLimitSingleIssuer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Benefit Plan, Concentration Risk, Diversification, Debt Limit, Single Issuer </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanConcentrationRiskDiversificationDebtLimitSingleIssuer" xlink:to="tdw_DefinedBenefitPlanConcentrationRiskDiversificationDebtLimitSingleIssuer_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleIndustry_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined benefit plan, concentration risk, diversification, equity limit, single industry </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleIndustry_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Concentration Risk Diversification Equity Limit Single Industry </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleCorporation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined benefit plan, concentration risk, diversification, equity limit, single corporation </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationEquityLimitSingleCorporation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Concentration Risk Diversification Equity Limit Single Corporation </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationDebtLimitSingleIssuer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined benefit plan, concentration risk, diversification, debt limit, single issuer </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanConcentrationRiskDiversificationDebtLimitSingleIssuer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Concentration Risk Diversification Debt Limit Single Issuer </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" xlink:type="locator" xlink:label="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems" xlink:to="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" xlink:type="locator" xlink:label="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable"/>
<label xml:lang="en-US" xlink:label="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fair Value, Assets and Liabilities Measured on Recurring Basis [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable" xlink:to="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value Assets And Liabilities Measured On Recurring Basis [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Assets And Liabilities Measured On Recurring Basis [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel1Member"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Quoted Prices In Active Markets (Level 1) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel1Member" xlink:to="us-gaap_FairValueInputsLevel1Member_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Inputs Level1 [Member] </label>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Significant Observable Inputs (Level 2) </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel3Member"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Significant Unobservable Inputs (Level 3) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueInputsLevel3Member" xlink:to="us-gaap_FairValueInputsLevel3Member_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Inputs Level3 [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsMember" xlink:type="locator" xlink:label="us-gaap_OtherAssetsMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsMember" xlink:to="us-gaap_OtherAssetsMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Assets [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:type="locator" xlink:label="us-gaap_USGovernmentAgenciesDebtSecuritiesMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_USGovernmentAgenciesDebtSecuritiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> US Government Agencies Debt Securities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:to="us-gaap_USGovernmentAgenciesDebtSecuritiesMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_USGovernmentAgenciesDebtSecuritiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> U S Government Agencies Debt Securities [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_CollateralizedMortgageBackedSecuritiesMember" xlink:type="locator" xlink:label="tdw_CollateralizedMortgageBackedSecuritiesMember"/>
<label xml:lang="en-US" xlink:label="tdw_CollateralizedMortgageBackedSecuritiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Collateralized Mortgage Backed Securities [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CollateralizedMortgageBackedSecuritiesMember" xlink:to="tdw_CollateralizedMortgageBackedSecuritiesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_CollateralizedMortgageBackedSecuritiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Collateralized mortgage securities </label>
<label xml:lang="en-US" xlink:label="tdw_CollateralizedMortgageBackedSecuritiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Collateralized Mortgage Backed Securities [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:type="locator" xlink:label="us-gaap_CorporateDebtSecuritiesMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_CorporateDebtSecuritiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Corporate Debt Securities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CorporateDebtSecuritiesMember" xlink:to="us-gaap_CorporateDebtSecuritiesMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CorporateDebtSecuritiesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Corporate Debt Securities [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ForeignStockMember" xlink:type="locator" xlink:label="tdw_ForeignStockMember"/>
<label xml:lang="en-US" xlink:label="tdw_ForeignStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Foreign Stock [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ForeignStockMember" xlink:to="tdw_ForeignStockMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ForeignStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Foreign Stock </label>
<label xml:lang="en-US" xlink:label="tdw_ForeignStockMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Foreign Stock [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AmericanDepositoryReceiptsMember" xlink:type="locator" xlink:label="tdw_AmericanDepositoryReceiptsMember"/>
<label xml:lang="en-US" xlink:label="tdw_AmericanDepositoryReceiptsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> American Depository Receipts [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AmericanDepositoryReceiptsMember" xlink:to="tdw_AmericanDepositoryReceiptsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AmericanDepositoryReceiptsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> American Depository Receipts </label>
<label xml:lang="en-US" xlink:label="tdw_AmericanDepositoryReceiptsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> American Depository Receipts [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PreferredAmericanDepositoryReceiptsMember" xlink:type="locator" xlink:label="tdw_PreferredAmericanDepositoryReceiptsMember"/>
<label xml:lang="en-US" xlink:label="tdw_PreferredAmericanDepositoryReceiptsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Preferred American Depository Receipts [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreferredAmericanDepositoryReceiptsMember" xlink:to="tdw_PreferredAmericanDepositoryReceiptsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PreferredAmericanDepositoryReceiptsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Preferred American Depository Receipts </label>
<label xml:lang="en-US" xlink:label="tdw_PreferredAmericanDepositoryReceiptsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preferred American Depository Receipts [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_RealEstateInvestmentTrustsMember" xlink:type="locator" xlink:label="tdw_RealEstateInvestmentTrustsMember"/>
<label xml:lang="en-US" xlink:label="tdw_RealEstateInvestmentTrustsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Real Estate Investment Trusts [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RealEstateInvestmentTrustsMember" xlink:to="tdw_RealEstateInvestmentTrustsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_RealEstateInvestmentTrustsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Real Estate Investment Trusts </label>
<label xml:lang="en-US" xlink:label="tdw_RealEstateInvestmentTrustsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Real Estate Investment Trusts [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_OpenEndMutualFundsMember" xlink:type="locator" xlink:label="tdw_OpenEndMutualFundsMember"/>
<label xml:lang="en-US" xlink:label="tdw_OpenEndMutualFundsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Open end mutual funds. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OpenEndMutualFundsMember" xlink:to="tdw_OpenEndMutualFundsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_OpenEndMutualFundsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Open Ended Mutual Funds </label>
<label xml:lang="en-US" xlink:label="tdw_OpenEndMutualFundsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Open End Mutual Funds [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByMeasurementBasisAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueByMeasurementBasisAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Measurement Basis </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByMeasurementBasisAxis" xlink:to="us-gaap_FairValueByMeasurementBasisAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueByMeasurementBasisAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value By Measurement Basis [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:type="locator" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value Disclosure Item Amounts [Default] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:to="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Portion At Fair Value Fair Value Disclosure [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:type="locator" xlink:label="us-gaap_FairValueDisclosureItemAmountsDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueDisclosureItemAmountsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value Measurement </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueDisclosureItemAmountsDomain" xlink:to="us-gaap_FairValueDisclosureItemAmountsDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueDisclosureItemAmountsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Disclosure Item Amounts [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:type="locator" xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Measured At Net Asset Value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:to="us-gaap_EstimateOfFairValueFairValueDisclosureMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Estimate Of Fair Value Fair Value Disclosure [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair value of plan assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:to="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Fair Value Of Plan Assets </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanAccruedIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued income </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanAccruedIncome_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Accrued Income </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanOtherPendingTransactionsIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Other pending transactions </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanOtherPendingTransactionsIncreaseDecrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Other Pending Transactions Increase Decrease </label>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total fair value of plan assets </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanBenefitObligationBeginningOfYear" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanBenefitObligationBeginningOfYear"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanBenefitObligationBeginningOfYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined benefit plan benefit obligation beginning of year. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanBenefitObligationBeginningOfYear" xlink:to="tdw_DefinedBenefitPlanBenefitObligationBeginningOfYear_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanFairValueOfPlanAssetsBeginningOfYear" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanFairValueOfPlanAssetsBeginningOfYear"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanFairValueOfPlanAssetsBeginningOfYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined benefit plan fair value of plan assets beginning of year. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanFairValueOfPlanAssetsBeginningOfYear" xlink:to="tdw_DefinedBenefitPlanFairValueOfPlanAssetsBeginningOfYear_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanAssetsCurtailments" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanAssetsCurtailments"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanAssetsCurtailments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined benefit plan assets curtailments. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanAssetsCurtailments" xlink:to="tdw_DefinedBenefitPlanAssetsCurtailments_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PayrollTaxUnrecognizedInBenefitObligation" xlink:type="locator" xlink:label="tdw_PayrollTaxUnrecognizedInBenefitObligation"/>
<label xml:lang="en-US" xlink:label="tdw_PayrollTaxUnrecognizedInBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Payroll tax unrecognized in benefit obligation. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PayrollTaxUnrecognizedInBenefitObligation" xlink:to="tdw_PayrollTaxUnrecognizedInBenefitObligation_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanUnfundedStatusOfPlan" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanUnfundedStatusOfPlan"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanUnfundedStatusOfPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined benefit plan unfunded status of plan. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanUnfundedStatusOfPlan" xlink:to="tdw_DefinedBenefitPlanUnfundedStatusOfPlan_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsLineItems" xlink:to="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsTable" xlink:type="locator" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsTable" xlink:to="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Pension And Other Postretirement Benefits Changes In Benefit Obligation And Fair Value Of Plan Assets [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Pension And Other Postretirement Benefits Changes In Benefit Obligation And Fair Value Of Plan Assets [Table] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ChangeInBenefitObligationsMember" xlink:type="locator" xlink:label="tdw_ChangeInBenefitObligationsMember"/>
<label xml:lang="en-US" xlink:label="tdw_ChangeInBenefitObligationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Change in Benefit Obligations [Member] </label>
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<label xml:lang="en-US" xlink:label="tdw_ChangeInBenefitObligationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change in Benefit Obligations </label>
<label xml:lang="en-US" xlink:label="tdw_ChangeInBenefitObligationsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Change In Benefit Obligations [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ChangeInPlanAssetsMember" xlink:type="locator" xlink:label="tdw_ChangeInPlanAssetsMember"/>
<label xml:lang="en-US" xlink:label="tdw_ChangeInPlanAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Change in Plan Assets [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ChangeInPlanAssetsMember" xlink:to="tdw_ChangeInPlanAssetsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ChangeInPlanAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Change In Plan Assets </label>
<label xml:lang="en-US" xlink:label="tdw_ChangeInPlanAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Change In Plan Assets [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherPensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_OtherPensionPlansDefinedBenefitMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherPensionPlansDefinedBenefitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other Pension Plans, Defined Benefit </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherPensionPlansDefinedBenefitMember" xlink:to="us-gaap_OtherPensionPlansDefinedBenefitMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherPensionPlansDefinedBenefitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Pension Plans Defined Benefit [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Pension and Other Postretirement Benefits Changes in Benefit Obligation and Fair Value of Plan Assets [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionAndOtherPostretirementBenefitsChangesInBenefitObligationAndFairValueOfPlanAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Pension And Other Postretirement Benefits Changes In Benefit Obligation And Fair Value Of Plan Assets [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanBenefitObligationBeginningOfYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Benefit obligation at beginning of the period </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanBenefitObligationBeginningOfYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Benefit Obligation Beginning Of Year </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanServiceCost"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanServiceCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Service cost </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanServiceCost" xlink:to="us-gaap_DefinedBenefitPlanServiceCost_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanServiceCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Service Cost </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanInterestCost"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanInterestCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Interest cost </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanInterestCost" xlink:to="us-gaap_DefinedBenefitPlanInterestCost_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanInterestCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Interest Cost </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Participant contributions </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant" xlink:to="us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Benefit Obligation Contributions By Plan Participant </label>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAmendments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Plan amendment </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanCurtailments" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanCurtailments"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanCurtailments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Plan curtailment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanCurtailments" xlink:to="us-gaap_DefinedBenefitPlanCurtailments_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanCurtailments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Curtailments </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Benefits paid </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid" xlink:to="us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Benefit Obligation Benefits Paid </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanActuarialGainLoss"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanActuarialGainLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Actuarial (gain) loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanActuarialGainLoss" xlink:to="us-gaap_DefinedBenefitPlanActuarialGainLoss_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanActuarialGainLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Actuarial Gain Loss </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Foreign currency exchange rate changes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation" xlink:to="us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Foreign Currency Exchange Rate Changes Benefit Obligation </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligation"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Benefit obligation at end of the period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanBenefitObligation" xlink:to="us-gaap_DefinedBenefitPlanBenefitObligation_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Benefit Obligation </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanFairValueOfPlanAssetsBeginningOfYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Fair value of plan assets at beginning of the period </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanFairValueOfPlanAssetsBeginningOfYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Fair Value Of Plan Assets Beginning Of Year </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Actual return </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:to="us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Actual Return On Plan Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Expected return </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Expected Return On Plan Assets </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAdministrationExpenses" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAdministrationExpenses"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAdministrationExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Administrative expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanAdministrationExpenses" xlink:to="us-gaap_DefinedBenefitPlanAdministrationExpenses_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAdministrationExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Administration Expenses </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanAssetsCurtailments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Plan curtailment </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanAssetsCurtailments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Assets Curtailments </label>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanContributionsByEmployer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Employer contributions </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Participant contributions </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant" xlink:to="us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Plan Assets Contributions By Plan Participant </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Benefits paid </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid" xlink:to="us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Plan Assets Benefits Paid </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Foreign currency exchange rate changes </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss" xlink:to="us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Plan Assets Foreign Currency Translation Gain Loss </label>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Fair value of plan assets at end of the period </label>
<label xml:lang="en-US" xlink:label="tdw_PayrollTaxUnrecognizedInBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Payroll tax unrecognized in benefit obligation at end of the period </label>
<label xml:lang="en-US" xlink:label="tdw_PayrollTaxUnrecognizedInBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Payroll Tax Unrecognized In Benefit Obligation </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanUnfundedStatusOfPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unfunded status at end of the period </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanUnfundedStatusOfPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Unfunded Status Of Plan </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities" xlink:type="locator" xlink:label="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities"/>
<label xml:lang="en-US" xlink:label="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Current liabilities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities" xlink:to="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_lbl"/>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
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<label xml:lang="en-US" xlink:label="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel"> Net amount recognized </label>
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<label xml:lang="en-US" xlink:label="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items] </label>
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<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationTable" xlink:type="locator" xlink:label="tdw_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Defined Benefit Plan Change in Benefit Obligation [Table] </label>
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<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Defined Benefit Plan Change In Benefit Obligation [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Defined Benefit Plan Change In Benefit Obligation [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Defined Benefit Plan Change In Benefit Obligation [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfDefinedBenefitPlanChangeInBenefitObligationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Defined Benefit Plan Change In Benefit Obligation [Line Items] </label>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Projected benefit obligation </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accumulated benefit obligation </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Accumulated Benefit Obligation </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfPensionPlansWithAccumulatedAndProjectedBenefitObligationsInExcessOfPlanAssetsLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfPensionPlansWithAccumulatedAndProjectedBenefitObligationsInExcessOfPlanAssetsLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionPlansWithAccumulatedAndProjectedBenefitObligationsInExcessOfPlanAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Pension Plans with Accumulated and Projected Benefit Obligations in Excess of Plan Assets [Line Items] </label>
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<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsTable" xlink:type="locator" xlink:label="tdw_ScheduleOfPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Table] </label>
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<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionPlansWithAccumulatedAndProjectedBenefitObligationsInExcessOfPlanAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Pension Plans With Accumulated And Projected Benefit Obligations In Excess Of Plan Assets [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionPlansWithAccumulatedAndProjectedBenefitObligationsInExcessOfPlanAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Pension Plans With Accumulated And Projected Benefit Obligations In Excess Of Plan Assets [Line Items] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NetPeriodBenefitCostAssumptionsLineItems" xlink:type="locator" xlink:label="tdw_NetPeriodBenefitCostAssumptionsLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_NetPeriodBenefitCostAssumptionsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Net Period Benefit Cost Assumptions [Line Items] </label>
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<loc xlink:href="tdw-20171231.xsd#tdw_NetPeriodBenefitCostAssumptionsTable" xlink:type="locator" xlink:label="tdw_NetPeriodBenefitCostAssumptionsTable"/>
<label xml:lang="en-US" xlink:label="tdw_NetPeriodBenefitCostAssumptionsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Net Period Benefit Cost Assumptions [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NetPeriodBenefitCostAssumptionsTable" xlink:to="tdw_NetPeriodBenefitCostAssumptionsTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NetPeriodBenefitCostAssumptionsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net Period Benefit Cost Assumptions [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_NetPeriodBenefitCostAssumptionsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Net Period Benefit Cost Assumptions [Table] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PensionPlanAndSupplementalPlanMember" xlink:type="locator" xlink:label="tdw_PensionPlanAndSupplementalPlanMember"/>
<label xml:lang="en-US" xlink:label="tdw_PensionPlanAndSupplementalPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Pension Plan and Supplemental Plan [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PensionPlanAndSupplementalPlanMember" xlink:to="tdw_PensionPlanAndSupplementalPlanMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PensionPlanAndSupplementalPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Pension Plan And Supplemental Plan </label>
<label xml:lang="en-US" xlink:label="tdw_PensionPlanAndSupplementalPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Pension Plan And Supplemental Plan [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_NetPeriodBenefitCostAssumptionsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net Period Benefit Cost Assumptions [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_NetPeriodBenefitCostAssumptionsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Net Period Benefit Cost Assumptions [Line Items] </label>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Expected return on plan assets </label>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAdministrationExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Administrational expenses </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanPayrollTaxOfNetPensionCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Payroll tax of net pension costs </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanPayrollTaxOfNetPensionCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Payroll Tax Of Net Pension Costs </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Amortization of net actuarial losses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:to="us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Amortization Of Gains Losses </label>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanActuarialGainLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel"> Recognized actuarial loss </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Curtailment gain </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" xlink:to="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Net periodic pension cost </label>
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<loc xlink:href="tdw-20171231.xsd#tdw_PostretirementHealthCareAndLifeInsuranceMember" xlink:type="locator" xlink:label="tdw_PostretirementHealthCareAndLifeInsuranceMember"/>
<label xml:lang="en-US" xlink:label="tdw_PostretirementHealthCareAndLifeInsuranceMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postretirement Health Care and Life Insurance [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostretirementHealthCareAndLifeInsuranceMember" xlink:to="tdw_PostretirementHealthCareAndLifeInsuranceMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PostretirementHealthCareAndLifeInsuranceMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other Benefits </label>
<label xml:lang="en-US" xlink:label="tdw_PostretirementHealthCareAndLifeInsuranceMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postretirement Health Care And Life Insurance [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amortization of prior service cost </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:to="us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Amortization Of Prior Service Cost Credit </label>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanActuarialGainLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Recognized actuarial (gain) </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsAndAmountsRecognizedInBalanceSheetAndInOtherComprehensiveIncomeLossLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsAndAmountsRecognizedInBalanceSheetAndInOtherComprehensiveIncomeLossLineItems"/>
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<loc xlink:href="tdw-20171231.xsd#tdw_SummaryOfComponentsOfNetPeriodicBenefitCostAndOtherChangesInPlanAssetsAndBenefitObligationsRecognizedInOtherComprehensiveIncomeTable" xlink:type="locator" xlink:label="tdw_SummaryOfComponentsOfNetPeriodicBenefitCostAndOtherChangesInPlanAssetsAndBenefitObligationsRecognizedInOtherComprehensiveIncomeTable"/>
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<label xml:lang="en-US" xlink:label="tdw_SummaryOfComponentsOfNetPeriodicBenefitCostAndOtherChangesInPlanAssetsAndBenefitObligationsRecognizedInOtherComprehensiveIncomeTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Summary Of Components Of Net Periodic Benefit Cost And Other Changes In Plan Assets And Benefit Obligations Recognized In Other Comprehensive Income [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsAndAmountsRecognizedInBalanceSheetAndInOtherComprehensiveIncomeLossLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Accumulated Benefit Obligations In Excess Of Fair Value Of Plan Assets And Amounts Recognized In Balance Sheet And In Other Comprehensive Income Loss [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsAndAmountsRecognizedInBalanceSheetAndInOtherComprehensiveIncomeLossLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Accumulated Benefit Obligations In Excess Of Fair Value Of Plan Assets And Amounts Recognized In Balance Sheet And In Other Comprehensive Income Loss [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax"/>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax"/>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Unrecognized actuarial (loss) gain </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unrecognized prior service credit (cost) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax" xlink:to="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Pre-tax amount included in accumulated other comprehensive (loss) income </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unrecognized actuarial (loss) gain </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear" xlink:to="us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Expected Amortization Of Gain Loss Next Fiscal Year </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unrecognized prior service credit (cost) </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Expected Amortization Of Prior Service Cost Credit Next Fiscal Year </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Discount rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:to="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_lbl"/>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Rates of annual increase in compensation levels </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Discount rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate" xlink:to="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Discount Rate </label>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Expected long-term rate of return on assets </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanExpectedFutureBenefitPayments" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanExpectedFutureBenefitPayments"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanExpectedFutureBenefitPayments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined benefit plan, expected future benefit payments. </label>
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<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Pension Expected Future Benefit Payments [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsLineItems" xlink:to="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsTable" xlink:type="locator" xlink:label="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of Pension Expected Future Benefit Payments [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsTable" xlink:to="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Pension Expected Future Benefit Payments [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Pension Expected Future Benefit Payments [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Pension Expected Future Benefit Payments [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfPensionExpectedFutureBenefitPaymentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Pension Expected Future Benefit Payments [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 2018 </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 2019 </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Expected Future Benefit Payments Year Two </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 2020 </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Expected Future Benefit Payments Year Three </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 2021 </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Expected Future Benefit Payments Year Four </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 2022 </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Expected Future Benefit Payments Year Five </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 2023 – 2027 </label>
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<label xml:lang="en-US" xlink:label="tdw_PreSixtyFiveCoverageMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Pre Sixty Five Coverage [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PreSixtyFiveCoverageMember" xlink:to="tdw_PreSixtyFiveCoverageMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PreSixtyFiveCoverageMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Pre Sixty Five Coverage </label>
<label xml:lang="en-US" xlink:label="tdw_PreSixtyFiveCoverageMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Pre Sixty Five Coverage [Member] </label>
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<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanAssumedHealthCareCostTrendPostretirementBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Assumed Health Care Cost Trend Postretirement Benefit Obligation </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanAssumedHealthCareCostTrendNetPeriodicPostretirementBenefitCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net periodic postretirement benefit obligation </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanAssumedHealthCareCostTrendNetPeriodicPostretirementBenefitCost_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Assumed Health Care Cost Trend Net Periodic Postretirement Benefit Cost </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanUltimateHealthCareCostTrendRatePostretirementBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Ultimate health care cost trend </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanUltimateHealthCareCostTrendRatePostretirementBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Ultimate Health Care Cost Trend Rate Postretirement Benefit Obligation </label>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined benefit plan, effect of one percentage point increase on accumulated postretirement benefit obligation </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents"/>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined benefit plan, effect of one percentage point decrease on accumulated postretirement benefit obligation </label>
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<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined benefit plan, effect of one percentage point decrease on aggregate service and interest cost </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1" xlink:to="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedContributionPlanCompanyContributionPercentage" xlink:type="locator" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentage"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Contribution Plan Company Contribution Percentage </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedContributionPlanCompanyContributionPercentage" xlink:to="tdw_DefinedContributionPlanCompanyContributionPercentage_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedContributionPlanCompanyContributionVestingPeriod" xlink:type="locator" xlink:label="tdw_DefinedContributionPlanCompanyContributionVestingPeriod"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionVestingPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Contribution Plan, Company Contribution Vesting Period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedContributionPlanCompanyContributionVestingPeriod" xlink:to="tdw_DefinedContributionPlanCompanyContributionVestingPeriod_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedContributionPlanCompanyContributionPercentageAdditionalPercentage" xlink:type="locator" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageAdditionalPercentage"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageAdditionalPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Contribution Plan, Company Contribution Percentage Additional Percentage </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedContributionPlanCompanyContributionPercentageAdditionalPercentage" xlink:to="tdw_DefinedContributionPlanCompanyContributionPercentageAdditionalPercentage_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined contribution plan, company contribution percentage </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan Company Contribution Percentage </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageAdditionalPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined contribution plan, company contribution percentage additional percentage </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageAdditionalPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan Company Contribution Percentage Additional Percentage </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionVestingPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined contribution plan, company contribution, vesting period, years </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionVestingPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan Company Contribution Vesting Period </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedContributionPlanPercentContributedByEmployeeMinimum" xlink:type="locator" xlink:label="tdw_DefinedContributionPlanPercentContributedByEmployeeMinimum"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanPercentContributedByEmployeeMinimum_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Contribution Plan Percent Contributed By Employee Minimum </label>
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<loc xlink:href="tdw-20171231.xsd#tdw_DefinedContributionPlanPercentContributedByEmployeeMaximum" xlink:type="locator" xlink:label="tdw_DefinedContributionPlanPercentContributedByEmployeeMaximum"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanPercentContributedByEmployeeMaximum_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined contribution plan percent contributed by employee maximum. </label>
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<loc xlink:href="tdw-20171231.xsd#tdw_DefinedContributionPlanCompanyContributionPercentageMatchCash" xlink:type="locator" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageMatchCash"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageMatchCash_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined contribution plan company contribution percentage match cash. </label>
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<loc xlink:href="tdw-20171231.xsd#tdw_DefinedContributionPlanCompanyContributionPercentageMatchDeferredCompensation" xlink:type="locator" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageMatchDeferredCompensation"/>
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<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanPercentContributedByEmployeeMinimum_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of defined plan, minimum employee contribution </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanPercentContributedByEmployeeMinimum_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan Percent Contributed By Employee Minimum </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanPercentContributedByEmployeeMaximum_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of defined plan, maximum employee contribution </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanPercentContributedByEmployeeMaximum_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan Percent Contributed By Employee Maximum </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageMatchCash_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of defined plan, company contribution match, cash </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageMatchCash_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan Company Contribution Percentage Match Cash </label>
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<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageMatchDeferredCompensation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan Company Contribution Percentage Match Deferred Compensation </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent" xlink:type="locator" xlink:label="us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent"/>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DescriptionOfNatureAndEffectOfSignificantChangesDuringPeriodAffectingComparability" xlink:type="locator" xlink:label="us-gaap_DescriptionOfNatureAndEffectOfSignificantChangesDuringPeriodAffectingComparability"/>
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<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DescriptionOfNatureAndEffectOfSignificantChangesDuringPeriodAffectingComparability" xlink:to="us-gaap_DescriptionOfNatureAndEffectOfSignificantChangesDuringPeriodAffectingComparability_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DescriptionOfNatureAndEffectOfSignificantChangesDuringPeriodAffectingComparability_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Description Of Nature And Effect Of Significant Changes During Period Affecting Comparability </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedContributionPlanTable" xlink:type="locator" xlink:label="us-gaap_DefinedContributionPlanTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined Contribution Plan [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedContributionPlanTable" xlink:to="us-gaap_DefinedContributionPlanTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedContributionPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedContributionPlanDisclosureLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined Contribution Plan Disclosure [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedContributionPlanDisclosureLineItems" xlink:to="us-gaap_DefinedContributionPlanDisclosureLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedContributionPlanDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan Disclosure [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CommonStockSharesHeldInEmployeeTrustShares" xlink:type="locator" xlink:label="us-gaap_CommonStockSharesHeldInEmployeeTrustShares"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesHeldInEmployeeTrustShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of shares of Tidewater common stock held by 401(k) plan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesHeldInEmployeeTrustShares" xlink:to="us-gaap_CommonStockSharesHeldInEmployeeTrustShares_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesHeldInEmployeeTrustShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Common Stock Shares Held In Employee Trust Shares </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedContributionPlanExpense" xlink:type="locator" xlink:label="tdw_DefinedContributionPlanExpense"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Contribution Plan Expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedContributionPlanExpense" xlink:to="tdw_DefinedContributionPlanExpense_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedBenefitPlanForfeitedAmounts" xlink:type="locator" xlink:label="tdw_DefinedBenefitPlanForfeitedAmounts"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanForfeitedAmounts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Benefit Plan Forfeited Amounts </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedBenefitPlanForfeitedAmounts" xlink:to="tdw_DefinedBenefitPlanForfeitedAmounts_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined contribution plans expense, net of forfeitures </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan Expense </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanForfeitedAmounts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined contribution plans forfeitures </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedBenefitPlanForfeitedAmounts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Forfeited Amounts </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedContributionPlanCompanyContributionPercentageMatchCommonStock" xlink:type="locator" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageMatchCommonStock"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageMatchCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Contribution Plan Company Contribution Percentage Match Common Stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedContributionPlanCompanyContributionPercentageMatchCommonStock" xlink:to="tdw_DefinedContributionPlanCompanyContributionPercentageMatchCommonStock_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DeferredCompensationArrangementWithIndividualDeferredCompensationPercentage" xlink:type="locator" xlink:label="tdw_DeferredCompensationArrangementWithIndividualDeferredCompensationPercentage"/>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationArrangementWithIndividualDeferredCompensationPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Deferred Compensation Arrangement with Individual Deferred Compensation Percentage </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DeferredCompensationArrangementWithIndividualDeferredCompensationPercentage" xlink:to="tdw_DeferredCompensationArrangementWithIndividualDeferredCompensationPercentage_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DeferredCompensationArrangementWithIndividualDeferredBonusPercentage" xlink:type="locator" xlink:label="tdw_DeferredCompensationArrangementWithIndividualDeferredBonusPercentage"/>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationArrangementWithIndividualDeferredBonusPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Deferred Compensation Arrangement with Individual Deferred Bonus Percentage </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DeferredCompensationArrangementWithIndividualDeferredBonusPercentage" xlink:to="tdw_DeferredCompensationArrangementWithIndividualDeferredBonusPercentage_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageMatchCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined contribution plan, company contribution percentage match, common stock </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanCompanyContributionPercentageMatchCommonStock_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan Company Contribution Percentage Match Common Stock </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationArrangementWithIndividualDeferredCompensationPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred compensation arrangement with individual, deferred compensation percentage </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationArrangementWithIndividualDeferredCompensationPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Arrangement With Individual Deferred Compensation Percentage </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationArrangementWithIndividualDeferredBonusPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred compensation arrangement with individual, deferred bonus percentage </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationArrangementWithIndividualDeferredBonusPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Arrangement With Individual Deferred Bonus Percentage </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DefinedContributionPlanRestorationBenefit" xlink:type="locator" xlink:label="tdw_DefinedContributionPlanRestorationBenefit"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanRestorationBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Defined Contribution Plan, Restoration Benefit </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DefinedContributionPlanRestorationBenefit" xlink:to="tdw_DefinedContributionPlanRestorationBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanRestorationBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Defined contribution plan, restoration benefit </label>
<label xml:lang="en-US" xlink:label="tdw_DefinedContributionPlanRestorationBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Contribution Plan Restoration Benefit </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ReductionInDefinedPlanAssetsAndLiabilities" xlink:type="locator" xlink:label="tdw_ReductionInDefinedPlanAssetsAndLiabilities"/>
<label xml:lang="en-US" xlink:label="tdw_ReductionInDefinedPlanAssetsAndLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Reduction in benefit plan assets and liabilities. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ReductionInDefinedPlanAssetsAndLiabilities" xlink:to="tdw_ReductionInDefinedPlanAssetsAndLiabilities_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ReductionInDefinedPlanAssetsAndLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reduction in defined plan assets and liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_ReductionInDefinedPlanAssetsAndLiabilities_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Reduction In Defined Plan Assets And Liabilities </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PensionExpense" xlink:type="locator" xlink:label="us-gaap_PensionExpense"/>
<label xml:lang="en-US" xlink:label="us-gaap_PensionExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Multinational plan expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PensionExpense" xlink:to="us-gaap_PensionExpense_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PensionExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Pension Expense </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract" xlink:to="us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfOtherCurrentAssetsLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfOtherCurrentAssetsLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfOtherCurrentAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of other current assets. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfOtherCurrentAssetsLineItems" xlink:to="tdw_ScheduleOfOtherCurrentAssetsLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfOtherCurrentAssetsTable" xlink:type="locator" xlink:label="tdw_ScheduleOfOtherCurrentAssetsTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfOtherCurrentAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of other current assets. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfOtherCurrentAssetsTable" xlink:to="tdw_ScheduleOfOtherCurrentAssetsTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfOtherCurrentAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Other Current Assets [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfOtherCurrentAssetsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Other Current Assets [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfOtherCurrentAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Other Current Assets [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfOtherCurrentAssetsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Other Current Assets [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_OtherCurrentAssetsOtherAssetsAccruedExpensesOtherCurrentLiabilitiesAndOtherNonCurrentLiabilitiesAndDeferredCreditsAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other Current Assets, Other Assets Accrued Expenses Other Current Liabilities and other Non current liabilities and Deferred Credits [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DepositsAssetsCurrent" xlink:type="locator" xlink:label="us-gaap_DepositsAssetsCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_DepositsAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deposits </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DepositsAssetsCurrent" xlink:to="us-gaap_DepositsAssetsCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DepositsAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deposits Assets Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RetainageDeposit" xlink:type="locator" xlink:label="us-gaap_RetainageDeposit"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetainageDeposit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reorganization related retainer payments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainageDeposit" xlink:to="us-gaap_RetainageDeposit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RetainageDeposit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Retainage Deposit </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PrepaidExpenseCurrent" xlink:type="locator" xlink:label="us-gaap_PrepaidExpenseCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_PrepaidExpenseCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Prepaid expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpenseCurrent" xlink:to="us-gaap_PrepaidExpenseCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PrepaidExpenseCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Prepaid Expense Current </label>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total other current assets </label>
<loc xlink:href="tdw-20171231.xsd#tdw_InvestmentsLiquidationValue" xlink:type="locator" xlink:label="tdw_InvestmentsLiquidationValue"/>
<label xml:lang="en-US" xlink:label="tdw_InvestmentsLiquidationValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Investments liquidation value. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_InvestmentsLiquidationValue" xlink:to="tdw_InvestmentsLiquidationValue_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PaymentAdvancesOfLumpSumBenefit" xlink:type="locator" xlink:label="tdw_PaymentAdvancesOfLumpSumBenefit"/>
<label xml:lang="en-US" xlink:label="tdw_PaymentAdvancesOfLumpSumBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Payment advances of lump sum benefit. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PaymentAdvancesOfLumpSumBenefit" xlink:to="tdw_PaymentAdvancesOfLumpSumBenefit_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_RabbiTrustMember" xlink:type="locator" xlink:label="tdw_RabbiTrustMember"/>
<label xml:lang="en-US" xlink:label="tdw_RabbiTrustMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Rabbi trust. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RabbiTrustMember" xlink:to="tdw_RabbiTrustMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_RabbiTrustMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Rabbi Trust </label>
<label xml:lang="en-US" xlink:label="tdw_RabbiTrustMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Rabbi Trust [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FormerChiefExecutiveOfficerMember" xlink:type="locator" xlink:label="tdw_FormerChiefExecutiveOfficerMember"/>
<label xml:lang="en-US" xlink:label="tdw_FormerChiefExecutiveOfficerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Former chief executive officer. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FormerChiefExecutiveOfficerMember" xlink:to="tdw_FormerChiefExecutiveOfficerMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FormerChiefExecutiveOfficerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Former CEO </label>
<label xml:lang="en-US" xlink:label="tdw_FormerChiefExecutiveOfficerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Former Chief Executive Officer [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_InvestmentsLiquidationValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investments liquidation value </label>
<label xml:lang="en-US" xlink:label="tdw_InvestmentsLiquidationValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Investments Liquidation Value </label>
<label xml:lang="en-US" xlink:label="tdw_PaymentAdvancesOfLumpSumBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Payment advances of lump sum benefit </label>
<label xml:lang="en-US" xlink:label="tdw_PaymentAdvancesOfLumpSumBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Payment Advances Of Lump Sum Benefit </label>
<loc xlink:href="tdw-20171231.xsd#tdw_InvestmentsHeldForSavingsPlansAndSupplementalExecutiveRetirementPlan" xlink:type="locator" xlink:label="tdw_InvestmentsHeldForSavingsPlansAndSupplementalExecutiveRetirementPlan"/>
<label xml:lang="en-US" xlink:label="tdw_InvestmentsHeldForSavingsPlansAndSupplementalExecutiveRetirementPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Investments held for savings plans and supplemental executive retirement plan. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_InvestmentsHeldForSavingsPlansAndSupplementalExecutiveRetirementPlan" xlink:to="tdw_InvestmentsHeldForSavingsPlansAndSupplementalExecutiveRetirementPlan_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AccumulatedCostsOfRejectedVessel" xlink:type="locator" xlink:label="tdw_AccumulatedCostsOfRejectedVessel"/>
<label xml:lang="en-US" xlink:label="tdw_AccumulatedCostsOfRejectedVessel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Accumulated costs of rejected vessel. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AccumulatedCostsOfRejectedVessel" xlink:to="tdw_AccumulatedCostsOfRejectedVessel_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_OtherAssetsAndOtherLiabilitiesLineItems" xlink:type="locator" xlink:label="tdw_OtherAssetsAndOtherLiabilitiesLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_OtherAssetsAndOtherLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Other Assets and Other Liabilities [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OtherAssetsAndOtherLiabilitiesLineItems" xlink:to="tdw_OtherAssetsAndOtherLiabilitiesLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_OtherAssetsAndOtherLiabilitiesTable" xlink:type="locator" xlink:label="tdw_OtherAssetsAndOtherLiabilitiesTable"/>
<label xml:lang="en-US" xlink:label="tdw_OtherAssetsAndOtherLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Other Assets and Other Liabilities [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OtherAssetsAndOtherLiabilitiesTable" xlink:to="tdw_OtherAssetsAndOtherLiabilitiesTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_OtherAssetsAndOtherLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other Assets And Other Liabilities [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_OtherAssetsAndOtherLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Assets And Other Liabilities [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_OtherAssetsAndOtherLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other Assets And Other Liabilities [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_OtherAssetsAndOtherLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Assets And Other Liabilities [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsNoncurrentAbstract" xlink:type="locator" xlink:label="us-gaap_OtherAssetsNoncurrentAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsNoncurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other Assets, Noncurrent [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrentAbstract" xlink:to="us-gaap_OtherAssetsNoncurrentAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsNoncurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Assets Noncurrent [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EstimatedInsuranceRecoveries" xlink:type="locator" xlink:label="us-gaap_EstimatedInsuranceRecoveries"/>
<label xml:lang="en-US" xlink:label="us-gaap_EstimatedInsuranceRecoveries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Recoverable insurance losses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EstimatedInsuranceRecoveries" xlink:to="us-gaap_EstimatedInsuranceRecoveries_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EstimatedInsuranceRecoveries_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Estimated Insurance Recoveries </label>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredTaxAssetsNetNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred income tax assets </label>
<label xml:lang="en-US" xlink:label="tdw_InvestmentsHeldForSavingsPlansAndSupplementalExecutiveRetirementPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investments held for savings plans and SERP </label>
<label xml:lang="en-US" xlink:label="tdw_InvestmentsHeldForSavingsPlansAndSupplementalExecutiveRetirementPlan_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Investments Held For Savings Plans And Supplemental Executive Retirement Plan </label>
<label xml:lang="en-US" xlink:label="tdw_AccumulatedCostsOfRejectedVessel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accumulated costs of rejected vessel </label>
<label xml:lang="en-US" xlink:label="tdw_AccumulatedCostsOfRejectedVessel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accumulated Costs Of Rejected Vessel </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLongTermInvestments" xlink:type="locator" xlink:label="us-gaap_OtherLongTermInvestments"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherLongTermInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Long-term deposits </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLongTermInvestments" xlink:to="us-gaap_OtherLongTermInvestments_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherLongTermInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Long Term Investments </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAssetsMiscellaneousNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsMiscellaneousNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsMiscellaneousNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsMiscellaneousNoncurrent" xlink:to="us-gaap_OtherAssetsMiscellaneousNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsMiscellaneousNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Assets Miscellaneous Noncurrent </label>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAssetsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Total other assets </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AccruedVesselExpenses" xlink:type="locator" xlink:label="tdw_AccruedVesselExpenses"/>
<label xml:lang="en-US" xlink:label="tdw_AccruedVesselExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Accrued vessel expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AccruedVesselExpenses" xlink:to="tdw_AccruedVesselExpenses_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAbstract" xlink:type="locator" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accounts Payable and Accrued Liabilities Current [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAbstract" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accounts Payable And Accrued Liabilities Current [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Payroll and related payables </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Employee Related Liabilities Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedSalesCommissionCurrent" xlink:type="locator" xlink:label="us-gaap_AccruedSalesCommissionCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccruedSalesCommissionCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Commissions payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedSalesCommissionCurrent" xlink:to="us-gaap_AccruedSalesCommissionCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccruedSalesCommissionCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accrued Sales Commission Current </label>
<label xml:lang="en-US" xlink:label="tdw_AccruedVesselExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued vessel expenses </label>
<label xml:lang="en-US" xlink:label="tdw_AccruedVesselExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accrued Vessel Expenses </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestPayableCurrent" xlink:type="locator" xlink:label="us-gaap_InterestPayableCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestPayableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued interest expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestPayableCurrent" xlink:to="us-gaap_InterestPayableCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestPayableCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Interest Payable Current </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other accrued expenses </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAccruedLiabilitiesCurrent" xlink:to="us-gaap_OtherAccruedLiabilitiesCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Accrued Liabilities Current </label>
<label xml:lang="en-US" xlink:label="us-gaap_AccruedLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Accrued expenses </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SonatideMember" xlink:type="locator" xlink:label="tdw_SonatideMember"/>
<label xml:lang="en-US" xlink:label="tdw_SonatideMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Sonatide. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SonatideMember" xlink:to="tdw_SonatideMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SonatideMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sonatide joint venture </label>
<label xml:lang="en-US" xlink:label="tdw_SonatideMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sonatide [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DebtCurrent" xlink:type="locator" xlink:label="us-gaap_DebtCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Post-restructuring capital structure which includes debt </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtCurrent" xlink:to="us-gaap_DebtCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DebtCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Debt Current </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SaleLeasebackTransactionDeferredGainCurrentPortion" xlink:type="locator" xlink:label="tdw_SaleLeasebackTransactionDeferredGainCurrentPortion"/>
<label xml:lang="en-US" xlink:label="tdw_SaleLeasebackTransactionDeferredGainCurrentPortion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Sale Leaseback Transaction Deferred Gain Current Portion </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SaleLeasebackTransactionDeferredGainCurrentPortion" xlink:to="tdw_SaleLeasebackTransactionDeferredGainCurrentPortion_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AmountsPayableToHoldersOfGeneralUnsecuredClaims" xlink:type="locator" xlink:label="tdw_AmountsPayableToHoldersOfGeneralUnsecuredClaims"/>
<label xml:lang="en-US" xlink:label="tdw_AmountsPayableToHoldersOfGeneralUnsecuredClaims_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Amounts payable to holders of general unsecured claims. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AmountsPayableToHoldersOfGeneralUnsecuredClaims" xlink:to="tdw_AmountsPayableToHoldersOfGeneralUnsecuredClaims_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_OtherLiabilitiesCurrentOther" xlink:type="locator" xlink:label="tdw_OtherLiabilitiesCurrentOther"/>
<label xml:lang="en-US" xlink:label="tdw_OtherLiabilitiesCurrentOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Other liabilities current other. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OtherLiabilitiesCurrentOther" xlink:to="tdw_OtherLiabilitiesCurrentOther_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AccountsPayableAndAccruedLiabilitiesLineItems" xlink:type="locator" xlink:label="tdw_AccountsPayableAndAccruedLiabilitiesLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_AccountsPayableAndAccruedLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Accounts Payable and Accrued Liabilities [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AccountsPayableAndAccruedLiabilitiesLineItems" xlink:to="tdw_AccountsPayableAndAccruedLiabilitiesLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AccountsPayableAndAccruedLiabilitiesTable" xlink:type="locator" xlink:label="tdw_AccountsPayableAndAccruedLiabilitiesTable"/>
<label xml:lang="en-US" xlink:label="tdw_AccountsPayableAndAccruedLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Accounts Payable and Accrued Liabilities [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AccountsPayableAndAccruedLiabilitiesTable" xlink:to="tdw_AccountsPayableAndAccruedLiabilitiesTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AccountsPayableAndAccruedLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accounts Payable And Accrued Liabilities [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_AccountsPayableAndAccruedLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accounts Payable And Accrued Liabilities [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_AccountsPayableAndAccruedLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accounts Payable And Accrued Liabilities [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_AccountsPayableAndAccruedLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accounts Payable And Accrued Liabilities [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherLiabilitiesCurrentAbstract" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesCurrentAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other Liabilities Current [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesCurrentAbstract" xlink:to="us-gaap_OtherLiabilitiesCurrentAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesCurrentAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Liabilities Current [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:type="locator" xlink:label="us-gaap_AccruedIncomeTaxesCurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccruedIncomeTaxesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Taxes payable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedIncomeTaxesCurrent" xlink:to="us-gaap_AccruedIncomeTaxesCurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccruedIncomeTaxesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accrued Income Taxes Current </label>
<label xml:lang="en-US" xlink:label="tdw_SaleLeasebackTransactionDeferredGainCurrentPortion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred gain on vessel sales - current </label>
<label xml:lang="en-US" xlink:label="tdw_SaleLeasebackTransactionDeferredGainCurrentPortion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sale Leaseback Transaction Deferred Gain Current Portion </label>
<label xml:lang="en-US" xlink:label="tdw_AmountsPayableToHoldersOfGeneralUnsecuredClaims_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amounts payable to holders of General Unsecured Claims </label>
<label xml:lang="en-US" xlink:label="tdw_AmountsPayableToHoldersOfGeneralUnsecuredClaims_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Amounts Payable To Holders Of General Unsecured Claims </label>
<label xml:lang="en-US" xlink:label="tdw_OtherLiabilitiesCurrentOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other </label>
<label xml:lang="en-US" xlink:label="tdw_OtherLiabilitiesCurrentOther_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Liabilities Current Other </label>
<label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesCurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Other current liabilities </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PensionPlanLiabilitiesNoncurrent" xlink:type="locator" xlink:label="tdw_PensionPlanLiabilitiesNoncurrent"/>
<label xml:lang="en-US" xlink:label="tdw_PensionPlanLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Noncurrent portion of the defined benefit and defined contribution pension plans, postemployment plans, and Multiemployer Plans, excluding the Postretirement benefits liability. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PensionPlanLiabilitiesNoncurrent" xlink:to="tdw_PensionPlanLiabilitiesNoncurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_OtherLiabilitiesCreditsNoncurrent" xlink:type="locator" xlink:label="tdw_OtherLiabilitiesCreditsNoncurrent"/>
<label xml:lang="en-US" xlink:label="tdw_OtherLiabilitiesCreditsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Other Liabilities, Credits, Noncurrent </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_OtherLiabilitiesCreditsNoncurrent" xlink:to="tdw_OtherLiabilitiesCreditsNoncurrent_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AccruedLiabilitiesLineItems" xlink:type="locator" xlink:label="tdw_AccruedLiabilitiesLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_AccruedLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Accrued Liabilities [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AccruedLiabilitiesLineItems" xlink:to="tdw_AccruedLiabilitiesLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AccruedLiabilitiesTable" xlink:type="locator" xlink:label="tdw_AccruedLiabilitiesTable"/>
<label xml:lang="en-US" xlink:label="tdw_AccruedLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Accrued Liabilities [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AccruedLiabilitiesTable" xlink:to="tdw_AccruedLiabilitiesTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AccruedLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued Liabilities [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_AccruedLiabilitiesTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accrued Liabilities [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_AccruedLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accrued Liabilities [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_AccruedLiabilitiesLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accrued Liabilities [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCreditsAndOtherLiabilitiesAbstract" xlink:type="locator" xlink:label="us-gaap_DeferredCreditsAndOtherLiabilitiesAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCreditsAndOtherLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred Credits and Other Liabilities [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCreditsAndOtherLiabilitiesAbstract" xlink:to="us-gaap_DeferredCreditsAndOtherLiabilitiesAbstract_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCreditsAndOtherLiabilitiesAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Credits And Other Liabilities [Abstract] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Postretirement benefits liability </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent" xlink:to="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Postretirement Defined Benefit Plan Liabilities Noncurrent </label>
<label xml:lang="en-US" xlink:label="tdw_PensionPlanLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Pension liabilities </label>
<label xml:lang="en-US" xlink:label="tdw_PensionPlanLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Pension Plan Liabilities Noncurrent </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SaleLeasebackTransactionDeferredGainNet" xlink:type="locator" xlink:label="us-gaap_SaleLeasebackTransactionDeferredGainNet"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleLeasebackTransactionDeferredGainNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred gain on vessel sales </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleLeasebackTransactionDeferredGainNet" xlink:to="us-gaap_SaleLeasebackTransactionDeferredGainNet_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleLeasebackTransactionDeferredGainNet_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sale Leaseback Transaction Deferred Gain Net </label>
<label xml:lang="en-US" xlink:label="tdw_OtherLiabilitiesCreditsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Other </label>
<label xml:lang="en-US" xlink:label="tdw_OtherLiabilitiesCreditsNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Liabilities Credits Noncurrent </label>
<label xml:lang="en-US" xlink:label="us-gaap_OtherLiabilitiesNoncurrent_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Other liabilities and deferred credits </label>
<loc xlink:href="tdw-20171231.xsd#tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:type="locator" xlink:label="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Compensation Related Costs Share Based Payments Disclosure [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:to="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:type="locator" xlink:label="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureTable"/>
<label xml:lang="en-US" xlink:label="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Compensation Related Costs Share Based Payments Disclosure [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:to="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Compensation Related Costs Share Based Payments Disclosure [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Compensation Related Costs Share Based Payments Disclosure [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Compensation Related Costs Share Based Payments Disclosure [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Compensation Related Costs Share Based Payments Disclosure [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Shares of common stock reserved for issuance under the plans </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Shares of common stock available for future grants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PostretirementBenefitsPlanVestingPeriod" xlink:type="locator" xlink:label="tdw_PostretirementBenefitsPlanVestingPeriod"/>
<label xml:lang="en-US" xlink:label="tdw_PostretirementBenefitsPlanVestingPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Postretirement Benefits Plan Vesting Period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PostretirementBenefitsPlanVestingPeriod" xlink:to="tdw_PostretirementBenefitsPlanVestingPeriod_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:type="locator" xlink:label="us-gaap_EmployeeStockOptionMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Stock Options </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeStockOptionMember" xlink:to="us-gaap_EmployeeStockOptionMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EmployeeStockOptionMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Employee Stock Option [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanNameAxis" xlink:type="locator" xlink:label="us-gaap_PlanNameAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_PlanNameAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Plan Name </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameAxis" xlink:to="us-gaap_PlanNameAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PlanNameAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Plan Name [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PlanNameDomain" xlink:type="locator" xlink:label="us-gaap_PlanNameDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_PlanNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Plan Name </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameDomain" xlink:to="us-gaap_PlanNameDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PlanNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Plan Name [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TwoThousandAndSeventeenStockIncentivePlanMember" xlink:type="locator" xlink:label="tdw_TwoThousandAndSeventeenStockIncentivePlanMember"/>
<label xml:lang="en-US" xlink:label="tdw_TwoThousandAndSeventeenStockIncentivePlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Two thousand and seventeen stock incentive plan. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TwoThousandAndSeventeenStockIncentivePlanMember" xlink:to="tdw_TwoThousandAndSeventeenStockIncentivePlanMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_TwoThousandAndSeventeenStockIncentivePlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> 2017 Stock Incentive Plan </label>
<label xml:lang="en-US" xlink:label="tdw_TwoThousandAndSeventeenStockIncentivePlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Two Thousand And Seventeen Stock Incentive Plan [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DirectorMember" xlink:type="locator" xlink:label="us-gaap_DirectorMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_DirectorMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Director </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DirectorMember" xlink:to="us-gaap_DirectorMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DirectorMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Director [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ChiefExecutiveOfficerMember" xlink:type="locator" xlink:label="us-gaap_ChiefExecutiveOfficerMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_ChiefExecutiveOfficerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> CEO </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ChiefExecutiveOfficerMember" xlink:to="us-gaap_ChiefExecutiveOfficerMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ChiefExecutiveOfficerMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Chief Executive Officer [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:type="locator" xlink:label="us-gaap_StatementClassOfStockAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Class of Stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_StatementClassOfStockAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Statement Class Of Stock [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:type="locator" xlink:label="us-gaap_ClassOfStockDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Class of Stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_ClassOfStockDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Class Of Stock [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TimeBasedRestrictedStockAwardsMember" xlink:type="locator" xlink:label="tdw_TimeBasedRestrictedStockAwardsMember"/>
<label xml:lang="en-US" xlink:label="tdw_TimeBasedRestrictedStockAwardsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Time Based Restricted Stock Awards [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TimeBasedRestrictedStockAwardsMember" xlink:to="tdw_TimeBasedRestrictedStockAwardsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_TimeBasedRestrictedStockAwardsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Time Based Restricted Stock Awards </label>
<label xml:lang="en-US" xlink:label="tdw_TimeBasedRestrictedStockAwardsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Time Based Restricted Stock Awards [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NonvestedSharesMember" xlink:type="locator" xlink:label="tdw_NonvestedSharesMember"/>
<label xml:lang="en-US" xlink:label="tdw_NonvestedSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Nonvested Shares [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NonvestedSharesMember" xlink:to="tdw_NonvestedSharesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NonvestedSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Non-Vested Shares </label>
<label xml:lang="en-US" xlink:label="tdw_NonvestedSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Nonvested Shares [Member] </label>
<label xml:lang="en-US" xlink:label="us-gaap_SeriesAMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Series A Warrants </label>
<label xml:lang="en-US" xlink:label="us-gaap_SeriesBMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Series B Warrants </label>
<label xml:lang="en-US" xlink:label="tdw_PerformanceBasedUnitMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash-based Performance Plan </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DeferredStockUnitPlanMember" xlink:type="locator" xlink:label="tdw_DeferredStockUnitPlanMember"/>
<label xml:lang="en-US" xlink:label="tdw_DeferredStockUnitPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Deferred stock unit plan. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DeferredStockUnitPlanMember" xlink:to="tdw_DeferredStockUnitPlanMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DeferredStockUnitPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred Stock Unit Plan </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredStockUnitPlanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Stock Unit Plan [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Arrangement With Individual Excluding Share Based Payments And Postretirement Benefits By Type Of Deferred Compensation [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain" xlink:type="locator" xlink:label="us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain" xlink:to="us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Bonus And Profit Sharing Arrangement Individual Contract Type Of Deferred Compensation [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DeferredCompensationCashAwardMember" xlink:type="locator" xlink:label="tdw_DeferredCompensationCashAwardMember"/>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationCashAwardMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Deferred compensation cash award. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DeferredCompensationCashAwardMember" xlink:to="tdw_DeferredCompensationCashAwardMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationCashAwardMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred Cash Award </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationCashAwardMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Cash Award [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Share Based Compensation Arrangement By Share Based Payment Award [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Option awards outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> General vesting period, years </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 </label>
<label xml:lang="en-US" xlink:label="tdw_PostretirementBenefitsPlanVestingPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Post retirement period to exercise vested options </label>
<label xml:lang="en-US" xlink:label="tdw_PostretirementBenefitsPlanVestingPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postretirement Benefits Plan Vesting Period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
<label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Option expiration period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted average fair value of stock options granted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Risk-free interest rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Expected dividend yield </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Expected stock price volatility </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
<label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Expected stock option life </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Stock-Based Compensation And Incentive Plans [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Rollforward </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Weighted-average Exercise Price Beginning Balance Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted-average Exercise Price, Granted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted-average Exercise Price, Exercised </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted-average Exercise Price, Expired or cancelled/forfeited </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price </label>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Weighted-average Exercise Price, Ending Balance Outstanding </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Shares Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Roll Forward </label>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Number of Shares Beginning Balance Outstanding </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Shares, Granted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Number of Shares, Exercised </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:to="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Issued During Period Shares Stock Options Exercised </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Number of Shares, Expired or cancelled/forfeited </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period </label>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Number of Shares Ending Balance Outstanding </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Intrinsic value of options exercised </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of stock options vested </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1"/>
<label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair value of stock options vested </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of options exercisable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted average exercise price of options exercisable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationEffectOfChangeOnBasicLossPerShare" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationEffectOfChangeOnBasicLossPerShare"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationEffectOfChangeOnBasicLossPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share based compensation effect of change on basic loss per share. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationEffectOfChangeOnBasicLossPerShare" xlink:to="tdw_ShareBasedCompensationEffectOfChangeOnBasicLossPerShare_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationEffectOfChangeOnDilutedLoss" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationEffectOfChangeOnDilutedLoss"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationEffectOfChangeOnDilutedLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share based compensation effect of change on diluted loss. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationEffectOfChangeOnDilutedLoss" xlink:to="tdw_ShareBasedCompensationEffectOfChangeOnDilutedLoss_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:type="locator" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense"/>
<label xml:lang="en-US" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Stock option compensation expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Allocated Share Based Compensation Expense </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationEffectOfChangeOnBasicLossPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Basic loss per share increased by </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationEffectOfChangeOnBasicLossPerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Effect Of Change On Basic Loss Per Share </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationEffectOfChangeOnDilutedLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Diluted loss per share increased by </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationEffectOfChangeOnDilutedLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Effect Of Change On Diluted Loss </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TimeBasedSharesMember" xlink:type="locator" xlink:label="tdw_TimeBasedSharesMember"/>
<label xml:lang="en-US" xlink:label="tdw_TimeBasedSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Time Based Shares [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TimeBasedSharesMember" xlink:to="tdw_TimeBasedSharesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_TimeBasedSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Time Based Shares </label>
<label xml:lang="en-US" xlink:label="tdw_TimeBasedSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Time Based Shares [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PerformanceBasedSharesMember" xlink:type="locator" xlink:label="tdw_PerformanceBasedSharesMember"/>
<label xml:lang="en-US" xlink:label="tdw_PerformanceBasedSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Performance Based Shares [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PerformanceBasedSharesMember" xlink:to="tdw_PerformanceBasedSharesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PerformanceBasedSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Performance Based Shares </label>
<label xml:lang="en-US" xlink:label="tdw_PerformanceBasedSharesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Performance Based Shares [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Weighted-average Grant-Date Fair Value, Beginning Balance Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Weighted-average Grant-Date Fair Value, Granted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Weighted-average Grant-Date Fair Value, Vested </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Weighted-average Grant-Date Fair Value, Cancelled/forfeited </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value </label>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Weighted-average Grant-Date Fair Value, Ending Balance Outstanding </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Number of Shares Beginning Balance Outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Shares, Granted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Number of Shares, Vested </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Number of Shares, Cancelled/forfeited </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period </label>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Number of Shares Ending Balance Outstanding </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Share based compensation outstanding number </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding Number </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodGrantDateFairValue" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodGrantDateFairValue"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Vested in Period Grant Date Fair Value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodGrantDateFairValue" xlink:to="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodGrantDateFairValue_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Grant date fair value of stock vested </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Grant Date Fair Value </label>
<label xml:lang="en-US" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Compensation expense </label>
<loc xlink:href="tdw-20171231.xsd#tdw_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedNetOfTax" xlink:type="locator" xlink:label="tdw_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedNetOfTax"/>
<label xml:lang="en-US" xlink:label="tdw_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Employee service sharebased compensation nonvested awards compensation cost not yet recognized net of tax. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedNetOfTax" xlink:to="tdw_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedNetOfTax_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:type="locator" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
<label xml:lang="en-US" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Total unrecognized stock compensation costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized </label>
<label xml:lang="en-US" xlink:label="tdw_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Total unrecognized stock compensation costs, net of tax </label>
<label xml:lang="en-US" xlink:label="tdw_EmployeeServiceSharebasedCompensationNonvestedAwardsCompensationCostNotYetRecognizedNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Employee Service Sharebased Compensation Nonvested Awards Compensation Cost Not Yet Recognized Net Of Tax </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> New awards issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Granted </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share based compensation arrangement by share based payment award equity instruments other than options cancelled in period weighted average grant date fair value. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue" xlink:to="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share based compensation arrangement by share based payment award equity instruments other than options forfeited in period weighted average grant date fair value. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue" xlink:to="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesIssuedInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesIssuedInPeriodWeightedAverageGrantDateFairValue"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesIssuedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share based compensation arrangement by share based payment award equity instruments other than options shares issued in period weighted average grant date fair value. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesIssuedInPeriodWeightedAverageGrantDateFairValue" xlink:to="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesIssuedInPeriodWeightedAverageGrantDateFairValue_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesIssuedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted-average Grant-Date Fair Value, Issuance of Successor phantom stock </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesIssuedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Shares Issued In Period Weighted Average Grant Date Fair Value </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted-average Grant-Date Fair Value, Cancelled </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Cancelled In Period Weighted Average Grant Date Fair Value </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted-average Grant-Date Fair Value, forfeited </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Weighted Average Grant Date Fair Value </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share based compensation arrangement by share based payment award equity instruments other than options cancelled in period. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod" xlink:to="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanForfeitedVestedInPeriod" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanForfeitedVestedInPeriod"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanForfeitedVestedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share based compensation arrangement by share based payment award equity instruments other than forfeited vested in period. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanForfeitedVestedInPeriod" xlink:to="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanForfeitedVestedInPeriod_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Shares, Issuance of Successor phantom stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Period </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Weighted-average Grant-Date Fair Value, Cancelled </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Cancelled In Period </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanForfeitedVestedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Weighted-average Grant-Date Fair Value, forfeited </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanForfeitedVestedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Forfeited Vested In Period </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ConversionRatio" xlink:type="locator" xlink:label="tdw_ConversionRatio"/>
<label xml:lang="en-US" xlink:label="tdw_ConversionRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Conversion ratio. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ConversionRatio" xlink:to="tdw_ConversionRatio_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ConversionRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Conversion ratio </label>
<label xml:lang="en-US" xlink:label="tdw_ConversionRatio_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Conversion Ratio </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConversionOfStockSharesIssued1" xlink:type="locator" xlink:label="us-gaap_ConversionOfStockSharesIssued1"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConversionOfStockSharesIssued1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unit received on conversion </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConversionOfStockSharesIssued1" xlink:to="us-gaap_ConversionOfStockSharesIssued1_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConversionOfStockSharesIssued1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Conversion Of Stock Shares Issued1 </label>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair value of non-vested shares </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationAgreementCashSettlementPricePerShare" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationAgreementCashSettlementPricePerShare"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationAgreementCashSettlementPricePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share Based Compensation Agreement Cash Settlement Price Per Share </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationAgreementCashSettlementPricePerShare" xlink:to="tdw_ShareBasedCompensationAgreementCashSettlementPricePerShare_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationAgreementCashSettlementPricePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Units awarded, vesting rights amount </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationAgreementCashSettlementPricePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Agreement Cash Settlement Price Per Share </label>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Shares, Vested </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DirectorStockPaymentPeriodInDays" xlink:type="locator" xlink:label="tdw_DirectorStockPaymentPeriodInDays"/>
<label xml:lang="en-US" xlink:label="tdw_DirectorStockPaymentPeriodInDays_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Director Stock Payment Period in Days </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DirectorStockPaymentPeriodInDays" xlink:to="tdw_DirectorStockPaymentPeriodInDays_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Value of stock units granted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualFairValueOfSharesIssued_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Arrangement With Individual Fair Value Of Shares Issued </label>
<label xml:lang="en-US" xlink:label="tdw_DirectorStockPaymentPeriodInDays_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Director stock payment period </label>
<label xml:lang="en-US" xlink:label="tdw_DirectorStockPaymentPeriodInDays_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Director Stock Payment Period In Days </label>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> New awards have been issued </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvestedWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvestedWeightedAverageGrantDateFairValue"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Dividend Equivalents Reinvested Weighted Average Grant Date Fair Value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvestedWeightedAverageGrantDateFairValue" xlink:to="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvestedWeightedAverageGrantDateFairValue_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributionsWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributionsWeightedAverageGrantDateFairValue"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributionsWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Retirement Distributions Weighted Average Grant Date Fair Value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributionsWeightedAverageGrantDateFairValue" xlink:to="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributionsWeightedAverageGrantDateFairValue_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualShareBasedPaymentsTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualShareBasedPaymentsTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualShareBasedPaymentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Deferred Compensation Arrangement With Individual Share Based Payments [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualShareBasedPaymentsTable" xlink:to="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualShareBasedPaymentsTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualShareBasedPaymentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Deferred Compensation Arrangement With Individual Share Based Payments [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsLineItems" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsLineItems" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualShareBasedPaymentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Arrangement With Individual Share Based Payments [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted-average Grant-Date Fair Value, Dividend equivalents reinvested </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvestedWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Dividend Equivalents Reinvested Weighted Average Grant Date Fair Value </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributionsWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted-average Grant-Date Fair Value, Retirement distribution </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributionsWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Retirement Distributions Weighted Average Grant Date Fair Value </label>
<label xml:lang="en-US" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Weighted-average Grant-Date Fair Value, Granted </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvested" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvested"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvested_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Dividend Equivalents Reinvested </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvested" xlink:to="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvested_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributions" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributions"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options Retirement Distributions </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributions" xlink:to="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributions_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvested_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Shares, Dividend equivalents reinvested </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsDividendEquivalentsReinvested_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Dividend Equivalents Reinvested </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Number of Shares, Retirement distribution </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsRetirementDistributions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Retirement Distributions </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ShareBasedCompensationExpenseBenefit" xlink:type="locator" xlink:label="tdw_ShareBasedCompensationExpenseBenefit"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Share based compensation expense (benefit). </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShareBasedCompensationExpenseBenefit" xlink:to="tdw_ShareBasedCompensationExpenseBenefit_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Compensation expense (benefit) </label>
<label xml:lang="en-US" xlink:label="tdw_ShareBasedCompensationExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Share Based Compensation Expense Benefit </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DeferredCompensationArrangementWithIndividualCashAwardsInterestRateApplicableMargin" xlink:type="locator" xlink:label="tdw_DeferredCompensationArrangementWithIndividualCashAwardsInterestRateApplicableMargin"/>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationArrangementWithIndividualCashAwardsInterestRateApplicableMargin_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Deferred compensation arrangement with individual cash awards interest rate applicable margin. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DeferredCompensationArrangementWithIndividualCashAwardsInterestRateApplicableMargin" xlink:to="tdw_DeferredCompensationArrangementWithIndividualCashAwardsInterestRateApplicableMargin_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DistributionPaymentPeriod" xlink:type="locator" xlink:label="tdw_DistributionPaymentPeriod"/>
<label xml:lang="en-US" xlink:label="tdw_DistributionPaymentPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Distribution payment period. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DistributionPaymentPeriod" xlink:to="tdw_DistributionPaymentPeriod_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Value of cash awards granted </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualCashAwardGrantedAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Arrangement With Individual Cash Award Granted Amount </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationArrangementWithIndividualCashAwardsInterestRateApplicableMargin_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Interest rate, applicable margin to 10 year Treasury note </label>
<label xml:lang="en-US" xlink:label="tdw_DeferredCompensationArrangementWithIndividualCashAwardsInterestRateApplicableMargin_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Arrangement With Individual Cash Awards Interest Rate Applicable Margin </label>
<label xml:lang="en-US" xlink:label="tdw_DistributionPaymentPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Distribution payment period </label>
<label xml:lang="en-US" xlink:label="tdw_DistributionPaymentPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Distribution Payment Period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Deferred Compensation Arrangement With Individual Excluding Share Based Payments And Postretirement Benefits By Title Of Individual And By Type Of Deferred Compensation [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable" xlink:to="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Deferred Compensation Arrangement With Individual Excluding Share Based Payments And Postretirement Benefits By Title Of Individual And By Type Of Deferred Compensation [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred Compensation Arrangement With Individual Excluding Share Based Payments And Postretirement Benefits [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Arrangement With Individual Excluding Share Based Payments And Postretirement Benefits [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred cash award expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deferred Compensation Arrangement With Individual Compensation Expense </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockholdersEquityNoteAbstract" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityNoteAbstract"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockholdersEquityNoteAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stockholders Equity Note [Abstract] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteAbstract" xlink:to="us-gaap_StockholdersEquityNoteAbstract_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_StockholdersEquityNoteLineItems" xlink:type="locator" xlink:label="tdw_StockholdersEquityNoteLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_StockholdersEquityNoteLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Stockholders Equity Note [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_StockholdersEquityNoteLineItems" xlink:to="tdw_StockholdersEquityNoteLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_StockholdersEquityNoteTable" xlink:type="locator" xlink:label="tdw_StockholdersEquityNoteTable"/>
<label xml:lang="en-US" xlink:label="tdw_StockholdersEquityNoteTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Stockholders Equity Note [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_StockholdersEquityNoteTable" xlink:to="tdw_StockholdersEquityNoteTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_StockholdersEquityNoteTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Stockholders Equity Note [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_StockholdersEquityNoteTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stockholders Equity Note [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_StockholdersEquityNoteLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Stockholders Equity Note [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_StockholdersEquityNoteLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stockholders Equity Note [Line Items] </label>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock shares authorized </label>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock par value </label>
<label xml:lang="en-US" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Common stock shares issued </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:type="locator" xlink:label="us-gaap_PreferredStockSharesAuthorized"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Preferred stock shares authorized </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesAuthorized" xlink:to="us-gaap_PreferredStockSharesAuthorized_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preferred Stock Shares Authorized </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreferredStockNoParValue" xlink:type="locator" xlink:label="us-gaap_PreferredStockNoParValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreferredStockNoParValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Preferred stock par value </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockNoParValue" xlink:to="us-gaap_PreferredStockNoParValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreferredStockNoParValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preferred Stock No Par Value </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:type="locator" xlink:label="us-gaap_PreferredStockSharesIssued"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Preferred stock shares issued </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PreferredStockSharesIssued" xlink:to="us-gaap_PreferredStockSharesIssued_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Preferred Stock Shares Issued </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StockRepurchasedDuringPeriodShares" xlink:type="locator" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Shares repurchased during period, shares </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockRepurchasedDuringPeriodShares" xlink:to="us-gaap_StockRepurchasedDuringPeriodShares_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Stock Repurchased During Period Shares </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DividendsCommonStockCash" xlink:type="locator" xlink:label="us-gaap_DividendsCommonStockCash"/>
<label xml:lang="en-US" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Dividends declared </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DividendsCommonStockCash" xlink:to="us-gaap_DividendsCommonStockCash_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Dividends Common Stock Cash </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Accumulated Other Comprehensive Income Loss [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accumulated Other Comprehensive Income Loss [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Available for Sale Securities </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember" xlink:to="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccumulatedNetUnrealizedInvestmentGainLossMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accumulated Net Unrealized Investment Gain Loss [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Pension/Post-retirement Benefits </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:to="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_lbl"/>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesMember"/>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
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<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Other Comprehensive Income Loss Before Reclassifications Net Of Tax </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" xlink:type="locator" xlink:label="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable" xlink:type="locator" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reclassification Out Of Accumulated Other Comprehensive Income [Table] </label>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis" xlink:type="locator" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reclassification out of Accumulated Other Comprehensive Income </label>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain" xlink:type="locator" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Reclassification out of Accumulated Other Comprehensive Income </label>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember" xlink:type="locator" xlink:label="us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember"/>
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<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems" xlink:type="locator" xlink:label="us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems"/>
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<label xml:lang="en-US" xlink:label="us-gaap_InvestmentIncomeNonoperating_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Interest income and other, net </label>
<label xml:lang="en-US" xlink:label="us-gaap_InterestAndDebtExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Interest and other debt costs </label>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Tax effect </label>
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<label xml:lang="en-US" xlink:label="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Remaining other comprehensive loss related to interest rate, swap pre-tax </label>
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<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfEarningsPerShareBasicAndDilutedLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfEarningsPerShareBasicAndDilutedLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfEarningsPerShareBasicAndDilutedLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule Of Earnings Per Share Basic And Diluted [Line Items] </label>
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<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfEarningsPerShareBasicAndDilutedTable" xlink:type="locator" xlink:label="tdw_ScheduleOfEarningsPerShareBasicAndDilutedTable"/>
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<label xml:lang="en-US" xlink:label="tdw_ScheduleOfEarningsPerShareBasicAndDilutedTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Earnings Per Share Basic And Diluted [Table] </label>
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<label xml:lang="en-US" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Antidilutive Securities, Name </label>
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<label xml:lang="en-US" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Antidilutive Securities Name [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_InTheMoneyOptionsWarrantsAndRestrictedStockAwardsAndUnitsMember" xlink:type="locator" xlink:label="tdw_InTheMoneyOptionsWarrantsAndRestrictedStockAwardsAndUnitsMember"/>
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<label xml:lang="en-US" xlink:label="tdw_ScheduleOfEarningsPerShareBasicAndDilutedLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Earnings Per Share Basic And Diluted [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfEarningsPerShareBasicAndDilutedLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Earnings Per Share Basic And Diluted [Line Items] </label>
<label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net loss available to common shareholders </label>
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<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Loss per share, basic </label>
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<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightOutstanding" xlink:to="us-gaap_ClassOfWarrantOrRightOutstanding_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Class Of Warrant Or Right Outstanding </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfVesselsRejectedInConnectionWithRestructuring" xlink:type="locator" xlink:label="tdw_NumberOfVesselsRejectedInConnectionWithRestructuring"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsRejectedInConnectionWithRestructuring_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of vessels rejected in connection with restructuring. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfVesselsRejectedInConnectionWithRestructuring" xlink:to="tdw_NumberOfVesselsRejectedInConnectionWithRestructuring_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SaleLeasebackTransactionTable" xlink:type="locator" xlink:label="us-gaap_SaleLeasebackTransactionTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleLeasebackTransactionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sale Leaseback Transaction [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleLeasebackTransactionTable" xlink:to="us-gaap_SaleLeasebackTransactionTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleLeasebackTransactionTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sale Leaseback Transaction [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SaleLeasebackTransactionLineItems" xlink:type="locator" xlink:label="us-gaap_SaleLeasebackTransactionLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleLeasebackTransactionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sale Leaseback Transaction [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleLeasebackTransactionLineItems" xlink:to="us-gaap_SaleLeasebackTransactionLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleLeasebackTransactionLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sale Leaseback Transaction [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsRejectedInConnectionWithRestructuring_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of vessels rejected pursuant to court order </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsRejectedInConnectionWithRestructuring_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Vessels Rejected In Connection With Restructuring </label>
<label xml:lang="en-US" xlink:label="us-gaap_LiabilitiesSubjectToCompromiseCapitalLeaseObligationsAndAccruedInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Unresolved sale leaseback claims </label>
<label xml:lang="en-US" xlink:label="tdw_RemainderPeriodTwoOfEmergenceConsiderationWithheldToBePaidMonthAndYear_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Remainder of emergence consideration withheld to be paid month and year </label>
<loc xlink:href="tdw-20171231.xsd#tdw_UnamortizedDeferredGain" xlink:type="locator" xlink:label="tdw_UnamortizedDeferredGain"/>
<label xml:lang="en-US" xlink:label="tdw_UnamortizedDeferredGain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Unamortized deferred gain. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_UnamortizedDeferredGain" xlink:to="tdw_UnamortizedDeferredGain_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized" xlink:type="locator" xlink:label="us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deferred gains on sale/leaseback transactions </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized" xlink:to="us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sale Leaseback Transaction Current Period Gain Recognized </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BankruptcyProceedingsDatePetitionsForBankruptcyFiled" xlink:type="locator" xlink:label="us-gaap_BankruptcyProceedingsDatePetitionsForBankruptcyFiled"/>
<label xml:lang="en-US" xlink:label="us-gaap_BankruptcyProceedingsDatePetitionsForBankruptcyFiled_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Date of petition for bankruptcy </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BankruptcyProceedingsDatePetitionsForBankruptcyFiled" xlink:to="us-gaap_BankruptcyProceedingsDatePetitionsForBankruptcyFiled_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_BankruptcyProceedingsDatePetitionsForBankruptcyFiled_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Bankruptcy Proceedings Date Petitions For Bankruptcy Filed </label>
<label xml:lang="en-US" xlink:label="tdw_UnamortizedDeferredGain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unamortized deferred gains credited to reorganization items on account of lease rejections </label>
<label xml:lang="en-US" xlink:label="tdw_UnamortizedDeferredGain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unamortized Deferred Gain </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SignificantPurchaseAndSupplyCommitmentLineItems" xlink:type="locator" xlink:label="tdw_SignificantPurchaseAndSupplyCommitmentLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_SignificantPurchaseAndSupplyCommitmentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Significant Purchase and Supply Commitment [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SignificantPurchaseAndSupplyCommitmentLineItems" xlink:to="tdw_SignificantPurchaseAndSupplyCommitmentLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_SignificantPurchaseAndSupplyCommitmentTable" xlink:type="locator" xlink:label="tdw_SignificantPurchaseAndSupplyCommitmentTable"/>
<label xml:lang="en-US" xlink:label="tdw_SignificantPurchaseAndSupplyCommitmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Significant Purchase and Supply Commitment [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SignificantPurchaseAndSupplyCommitmentTable" xlink:to="tdw_SignificantPurchaseAndSupplyCommitmentTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SignificantPurchaseAndSupplyCommitmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Significant Purchase And Supply Commitment [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_SignificantPurchaseAndSupplyCommitmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Significant Purchase And Supply Commitment [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:type="locator" xlink:label="us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Category of Item Purchased </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:to="us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Long Term Purchase Commitment By Category Of Item Purchased [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xlink:type="locator" xlink:label="us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Long-term Purchase Commitment, Category of Item Purchased </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xlink:to="us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Long Term Purchase Commitment Category Of Item Purchased [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DeepwaterPlatformSupplyVesselMember" xlink:type="locator" xlink:label="tdw_DeepwaterPlatformSupplyVesselMember"/>
<label xml:lang="en-US" xlink:label="tdw_DeepwaterPlatformSupplyVesselMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Deepwater platform supply vessel. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DeepwaterPlatformSupplyVesselMember" xlink:to="tdw_DeepwaterPlatformSupplyVesselMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DeepwaterPlatformSupplyVesselMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Vessel Commitments </label>
<label xml:lang="en-US" xlink:label="tdw_DeepwaterPlatformSupplyVesselMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deepwater Platform Supply Vessel [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SupplyCommitmentAxis" xlink:type="locator" xlink:label="us-gaap_SupplyCommitmentAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_SupplyCommitmentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Supply Commitment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplyCommitmentAxis" xlink:to="us-gaap_SupplyCommitmentAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SupplyCommitmentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Supply Commitment [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SupplyCommitmentArrangementMember" xlink:type="locator" xlink:label="us-gaap_SupplyCommitmentArrangementMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_SupplyCommitmentArrangementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Supply Commitment Arrangement </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplyCommitmentArrangementMember" xlink:to="us-gaap_SupplyCommitmentArrangementMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SupplyCommitmentArrangementMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Supply Commitment Arrangement [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FastCrewSupplyBoatMember" xlink:type="locator" xlink:label="tdw_FastCrewSupplyBoatMember"/>
<label xml:lang="en-US" xlink:label="tdw_FastCrewSupplyBoatMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fast Crew Supply Boat [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FastCrewSupplyBoatMember" xlink:to="tdw_FastCrewSupplyBoatMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FastCrewSupplyBoatMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fast, Crew/Supply Boat </label>
<label xml:lang="en-US" xlink:label="tdw_FastCrewSupplyBoatMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fast Crew Supply Boat [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_SignificantPurchaseAndSupplyCommitmentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Significant Purchase and Supply Commitment [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_SignificantPurchaseAndSupplyCommitmentLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Significant Purchase And Supply Commitment [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DefinedBenefitPlanSpecialTerminationBenefits" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanSpecialTerminationBenefits"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanSpecialTerminationBenefits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash compensation on termination of employment, maximum </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedBenefitPlanSpecialTerminationBenefits" xlink:to="us-gaap_DefinedBenefitPlanSpecialTerminationBenefits_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DefinedBenefitPlanSpecialTerminationBenefits_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Defined Benefit Plan Special Termination Benefits </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SignificantCommitmentNewConstructionDeadWeightTonsCapacity" xlink:type="locator" xlink:label="tdw_SignificantCommitmentNewConstructionDeadWeightTonsCapacity"/>
<label xml:lang="en-US" xlink:label="tdw_SignificantCommitmentNewConstructionDeadWeightTonsCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Significant Commitment New Construction Dead Weight Tons Capacity </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SignificantCommitmentNewConstructionDeadWeightTonsCapacity" xlink:to="tdw_SignificantCommitmentNewConstructionDeadWeightTonsCapacity_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_SignificantCommitmentNumberOfVessel" xlink:type="locator" xlink:label="tdw_SignificantCommitmentNumberOfVessel"/>
<label xml:lang="en-US" xlink:label="tdw_SignificantCommitmentNumberOfVessel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Significant commitment number of vessel. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SignificantCommitmentNumberOfVessel" xlink:to="tdw_SignificantCommitmentNumberOfVessel_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SignificantCommitmentNewConstructionDeadWeightTonsCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Significant commitment, new construction deadweight tons capacity </label>
<label xml:lang="en-US" xlink:label="tdw_SignificantCommitmentNewConstructionDeadWeightTonsCapacity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Significant Commitment New Construction Dead Weight Tons Capacity </label>
<label xml:lang="en-US" xlink:label="tdw_SignificantCommitmentNumberOfVessel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Vessels, commitments </label>
<label xml:lang="en-US" xlink:label="tdw_SignificantCommitmentNumberOfVessel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Significant Commitment Number Of Vessel </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FinalInstallmentPaid" xlink:type="locator" xlink:label="tdw_FinalInstallmentPaid"/>
<label xml:lang="en-US" xlink:label="tdw_FinalInstallmentPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Final installment paid. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FinalInstallmentPaid" xlink:to="tdw_FinalInstallmentPaid_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DeliveryDateOfSecondPSV" xlink:type="locator" xlink:label="tdw_DeliveryDateOfSecondPSV"/>
<label xml:lang="en-US" xlink:label="tdw_DeliveryDateOfSecondPSV_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Delivery date of second PSV. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DeliveryDateOfSecondPSV" xlink:to="tdw_DeliveryDateOfSecondPSV_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_RemainingInstallmentPaymentForSecondPSV" xlink:type="locator" xlink:label="tdw_RemainingInstallmentPaymentForSecondPSV"/>
<label xml:lang="en-US" xlink:label="tdw_RemainingInstallmentPaymentForSecondPSV_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Remaining installment payment for second PSV. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RemainingInstallmentPaymentForSecondPSV" xlink:to="tdw_RemainingInstallmentPaymentForSecondPSV_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_SettlementCreditForFutureDryDockingServices" xlink:type="locator" xlink:label="tdw_SettlementCreditForFutureDryDockingServices"/>
<label xml:lang="en-US" xlink:label="tdw_SettlementCreditForFutureDryDockingServices_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Settlement credit for future dry docking services. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SettlementCreditForFutureDryDockingServices" xlink:to="tdw_SettlementCreditForFutureDryDockingServices_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DeliveryDateOfFirstPSV" xlink:type="locator" xlink:label="tdw_DeliveryDateOfFirstPSV"/>
<label xml:lang="en-US" xlink:label="tdw_DeliveryDateOfFirstPSV_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Delivery date of first PSV. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DeliveryDateOfFirstPSV" xlink:to="tdw_DeliveryDateOfFirstPSV_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ContractedDeadweightCreditReceived" xlink:type="locator" xlink:label="tdw_ContractedDeadweightCreditReceived"/>
<label xml:lang="en-US" xlink:label="tdw_ContractedDeadweightCreditReceived_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Contracted deadweight credit received. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ContractedDeadweightCreditReceived" xlink:to="tdw_ContractedDeadweightCreditReceived_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingencySettlementAgreementDate" xlink:type="locator" xlink:label="us-gaap_LossContingencySettlementAgreementDate"/>
<label xml:lang="en-US" xlink:label="us-gaap_LossContingencySettlementAgreementDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Settlement agreement, date </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingencySettlementAgreementDate" xlink:to="us-gaap_LossContingencySettlementAgreementDate_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LossContingencySettlementAgreementDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Loss Contingency Settlement Agreement Date </label>
<label xml:lang="en-US" xlink:label="tdw_ContractedDeadweightCreditReceived_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Contracted deadweight credit received </label>
<label xml:lang="en-US" xlink:label="tdw_ContractedDeadweightCreditReceived_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Contracted Deadweight Credit Received </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CostOfReimbursableExpense" xlink:type="locator" xlink:label="us-gaap_CostOfReimbursableExpense"/>
<label xml:lang="en-US" xlink:label="us-gaap_CostOfReimbursableExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cost of reimbursable expense </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostOfReimbursableExpense" xlink:to="us-gaap_CostOfReimbursableExpense_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CostOfReimbursableExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cost Of Reimbursable Expense </label>
<label xml:lang="en-US" xlink:label="tdw_DeliveryDateOfFirstPSV_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Delivery date of first PSV </label>
<label xml:lang="en-US" xlink:label="tdw_DeliveryDateOfFirstPSV_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Delivery Date Of First P S V </label>
<label xml:lang="en-US" xlink:label="tdw_FinalInstallmentPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Final installment paid </label>
<label xml:lang="en-US" xlink:label="tdw_FinalInstallmentPaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Final Installment Paid </label>
<label xml:lang="en-US" xlink:label="tdw_DeliveryDateOfSecondPSV_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Delivery date of second PSV </label>
<label xml:lang="en-US" xlink:label="tdw_DeliveryDateOfSecondPSV_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Delivery Date Of Second P S V </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PostconfirmationEquipment" xlink:type="locator" xlink:label="us-gaap_PostconfirmationEquipment"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Vessel under construction, fair value, after fresh start accounting </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PostconfirmationEquipment" xlink:to="us-gaap_PostconfirmationEquipment_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PostconfirmationEquipment_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Postconfirmation Equipment </label>
<label xml:lang="en-US" xlink:label="tdw_RemainingInstallmentPaymentForSecondPSV_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Remaining installment payment for second PSV </label>
<label xml:lang="en-US" xlink:label="tdw_RemainingInstallmentPaymentForSecondPSV_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Remaining Installment Payment For Second P S V </label>
<label xml:lang="en-US" xlink:label="tdw_SettlementCreditForFutureDryDockingServices_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Settlement credit for future dry docking services </label>
<label xml:lang="en-US" xlink:label="tdw_SettlementCreditForFutureDryDockingServices_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Settlement Credit For Future Dry Docking Services </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SignificantCommitmentsNewConstruction" xlink:type="locator" xlink:label="tdw_SignificantCommitmentsNewConstruction"/>
<label xml:lang="en-US" xlink:label="tdw_SignificantCommitmentsNewConstruction_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Significant commitments, new construction. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SignificantCommitmentsNewConstruction" xlink:to="tdw_SignificantCommitmentsNewConstruction_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AccumulatedCostReclassifiedFromConstructionInProgressToOtherAssetsAsInsuranceReceivable" xlink:type="locator" xlink:label="tdw_AccumulatedCostReclassifiedFromConstructionInProgressToOtherAssetsAsInsuranceReceivable"/>
<label xml:lang="en-US" xlink:label="tdw_AccumulatedCostReclassifiedFromConstructionInProgressToOtherAssetsAsInsuranceReceivable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Accumulated cost reclassified from construction in progress to other assets as an insurance receivable. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AccumulatedCostReclassifiedFromConstructionInProgressToOtherAssetsAsInsuranceReceivable" xlink:to="tdw_AccumulatedCostReclassifiedFromConstructionInProgressToOtherAssetsAsInsuranceReceivable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SignificantCommitmentsNewConstruction_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of vessels under construction </label>
<label xml:lang="en-US" xlink:label="tdw_SignificantCommitmentsNewConstruction_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Significant Commitments New Construction </label>
<label xml:lang="en-US" xlink:label="tdw_AccumulatedCostReclassifiedFromConstructionInProgressToOtherAssetsAsInsuranceReceivable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Remaining accumulated cost reclassified from construction in progress to other assets as insurance receivable </label>
<label xml:lang="en-US" xlink:label="tdw_AccumulatedCostReclassifiedFromConstructionInProgressToOtherAssetsAsInsuranceReceivable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Accumulated Cost Reclassified From Construction In Progress To Other Assets As Insurance Receivable </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InsuranceSettlementsReceivable" xlink:type="locator" xlink:label="us-gaap_InsuranceSettlementsReceivable"/>
<label xml:lang="en-US" xlink:label="us-gaap_InsuranceSettlementsReceivable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Remaining insurance receivable </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InsuranceSettlementsReceivable" xlink:to="us-gaap_InsuranceSettlementsReceivable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_InsuranceSettlementsReceivable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Insurance Settlements Receivable </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DueFromAffiliateBalanceInvoicedButUnpaid" xlink:type="locator" xlink:label="tdw_DueFromAffiliateBalanceInvoicedButUnpaid"/>
<label xml:lang="en-US" xlink:label="tdw_DueFromAffiliateBalanceInvoicedButUnpaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Due from affiliate balance invoiced but unpaid. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DueFromAffiliateBalanceInvoicedButUnpaid" xlink:to="tdw_DueFromAffiliateBalanceInvoicedButUnpaid_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_CommitmentsAndContingenciesDisclosureLineItems" xlink:type="locator" xlink:label="tdw_CommitmentsAndContingenciesDisclosureLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_CommitmentsAndContingenciesDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Commitments and Contingencies Disclosure [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CommitmentsAndContingenciesDisclosureLineItems" xlink:to="tdw_CommitmentsAndContingenciesDisclosureLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_CommitmentsAndContingenciesDisclosureTable" xlink:type="locator" xlink:label="tdw_CommitmentsAndContingenciesDisclosureTable"/>
<label xml:lang="en-US" xlink:label="tdw_CommitmentsAndContingenciesDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Commitments and Contingencies Disclosure [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CommitmentsAndContingenciesDisclosureTable" xlink:to="tdw_CommitmentsAndContingenciesDisclosureTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_CommitmentsAndContingenciesDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Commitments And Contingencies Disclosure [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_CommitmentsAndContingenciesDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Commitments And Contingencies Disclosure [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CashAndCashEquivalentsAxis" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash and Cash Equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAxis" xlink:to="us-gaap_CashAndCashEquivalentsAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CashAndCashEquivalentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cash And Cash Equivalents [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:type="locator" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash and Cash Equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Restricted Cash And Cash Equivalents Cash And Cash Equivalents [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_BankDepositMember" xlink:type="locator" xlink:label="tdw_BankDepositMember"/>
<label xml:lang="en-US" xlink:label="tdw_BankDepositMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Bank deposit. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_BankDepositMember" xlink:to="tdw_BankDepositMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_BankDepositMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Angolan kwanza-denominated </label>
<label xml:lang="en-US" xlink:label="tdw_BankDepositMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Bank Deposit [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:type="locator" xlink:label="us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_LossContingenciesByNatureOfContingencyAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Loss Contingency Nature </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:to="us-gaap_LossContingenciesByNatureOfContingencyAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LossContingenciesByNatureOfContingencyAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Loss Contingencies By Nature Of Contingency [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:type="locator" xlink:label="us-gaap_LossContingencyNatureDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_LossContingencyNatureDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Loss Contingency, Nature </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingencyNatureDomain" xlink:to="us-gaap_LossContingencyNatureDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LossContingencyNatureDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Loss Contingency Nature [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScenarioOneMember" xlink:type="locator" xlink:label="tdw_ScenarioOneMember"/>
<label xml:lang="en-US" xlink:label="tdw_ScenarioOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Scenario 1. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScenarioOneMember" xlink:to="tdw_ScenarioOneMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScenarioOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> U.S. dollars initially received by Sonatide on behalf of the company or dollars collected from other customers </label>
<label xml:lang="en-US" xlink:label="tdw_ScenarioOneMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Scenario One [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ScenarioTwoMember" xlink:type="locator" xlink:label="tdw_ScenarioTwoMember"/>
<label xml:lang="en-US" xlink:label="tdw_ScenarioTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Scenario 2. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScenarioTwoMember" xlink:to="tdw_ScenarioTwoMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScenarioTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sonatide's converting kwanzas into dollars and subsequent payment to company </label>
<label xml:lang="en-US" xlink:label="tdw_ScenarioTwoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Scenario Two [Member] </label>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_AO" xlink:type="locator" xlink:label="country_AO"/>
<label xml:lang="en-US" xlink:label="country_AO_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> ANGOLA </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_AO" xlink:to="country_AO_lbl"/>
<label xml:lang="en-US" xlink:label="country_AO_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> ANGOLA </label>
<label xml:lang="en-US" xlink:label="tdw_CommitmentsAndContingenciesDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Commitments and Contingencies Disclosure [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_CommitmentsAndContingenciesDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Commitments And Contingencies Disclosure [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_DueFromAffiliateBalanceInvoicedButUnpaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Unpaid vessel revenue </label>
<label xml:lang="en-US" xlink:label="tdw_DueFromAffiliateBalanceInvoicedButUnpaid_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Due From Affiliate Balance Invoiced But Unpaid </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DueFromBanks" xlink:type="locator" xlink:label="us-gaap_DueFromBanks"/>
<label xml:lang="en-US" xlink:label="us-gaap_DueFromBanks_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Bank deposits maintained </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueFromBanks" xlink:to="us-gaap_DueFromBanks_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DueFromBanks_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Due From Banks </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProceedsFromContributionsFromAffiliates" xlink:type="locator" xlink:label="us-gaap_ProceedsFromContributionsFromAffiliates"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromContributionsFromAffiliates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Proceeds from related party </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromContributionsFromAffiliates" xlink:to="us-gaap_ProceedsFromContributionsFromAffiliates_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProceedsFromContributionsFromAffiliates_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Proceeds From Contributions From Affiliates </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IncreaseDecreaseInDueFromRelatedParties" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInDueFromRelatedParties"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInDueFromRelatedParties_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Due from affiliate and due to affiliate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDueFromRelatedParties" xlink:to="us-gaap_IncreaseDecreaseInDueFromRelatedParties_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IncreaseDecreaseInDueFromRelatedParties_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Increase Decrease In Due From Related Parties </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SalesRevenueServicesPercentage" xlink:type="locator" xlink:label="tdw_SalesRevenueServicesPercentage"/>
<label xml:lang="en-US" xlink:label="tdw_SalesRevenueServicesPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Sales revenue, services, percentage. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SalesRevenueServicesPercentage" xlink:to="tdw_SalesRevenueServicesPercentage_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfVesselsStacked" xlink:type="locator" xlink:label="tdw_NumberOfVesselsStacked"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsStacked_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of vessels stacked. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfVesselsStacked" xlink:to="tdw_NumberOfVesselsStacked_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SalesRevenueServicesPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of Angolan operation revenue </label>
<label xml:lang="en-US" xlink:label="tdw_SalesRevenueServicesPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sales Revenue Services Percentage </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVessel_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Number of vessels operating </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsStacked_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of vessels stacked </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsStacked_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Vessels Stacked </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AmortizationPeriodOfBasisDifferenceEquityMethodInvestments" xlink:type="locator" xlink:label="tdw_AmortizationPeriodOfBasisDifferenceEquityMethodInvestments"/>
<label xml:lang="en-US" xlink:label="tdw_AmortizationPeriodOfBasisDifferenceEquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Amortization period of basis difference equity method investments. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AmortizationPeriodOfBasisDifferenceEquityMethodInvestments" xlink:to="tdw_AmortizationPeriodOfBasisDifferenceEquityMethodInvestments_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Ownership Interest In Joint Venture </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity" xlink:type="locator" xlink:label="us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Investment balance in difference between carrying value and net assets of the joint venture </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity" xlink:to="us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Equity Method Investment Difference Between Carrying Amount And Underlying Equity </label>
<label xml:lang="en-US" xlink:label="tdw_AmortizationPeriodOfBasisDifferenceEquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amortization period of basis difference equity method investments </label>
<label xml:lang="en-US" xlink:label="tdw_AmortizationPeriodOfBasisDifferenceEquityMethodInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Amortization Period Of Basis Difference Equity Method Investments </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfVesselsTransferred" xlink:type="locator" xlink:label="tdw_NumberOfVesselsTransferred"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsTransferred_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of vessels transferred. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfVesselsTransferred" xlink:to="tdw_NumberOfVesselsTransferred_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsTransferred_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of vessels transferred out of Angola </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsTransferred_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Vessels Transferred </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AssessedFineOriginal" xlink:type="locator" xlink:label="tdw_AssessedFineOriginal"/>
<label xml:lang="en-US" xlink:label="tdw_AssessedFineOriginal_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Assessed fine original. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AssessedFineOriginal" xlink:to="tdw_AssessedFineOriginal_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfVesselsThatSubsidiariesFailedToObtainImportLicenses" xlink:type="locator" xlink:label="tdw_NumberOfVesselsThatSubsidiariesFailedToObtainImportLicenses"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsThatSubsidiariesFailedToObtainImportLicenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of vessels that subsidiaries failed to obtain import licenses. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfVesselsThatSubsidiariesFailedToObtainImportLicenses" xlink:to="tdw_NumberOfVesselsThatSubsidiariesFailedToObtainImportLicenses_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AssessedFineOriginal_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fines assessed </label>
<label xml:lang="en-US" xlink:label="tdw_AssessedFineOriginal_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Assessed Fine Original </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsThatSubsidiariesFailedToObtainImportLicenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of Tidewater vessels that the subsidiaries failed to obtain import licenses from </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsThatSubsidiariesFailedToObtainImportLicenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Vessels That Subsidiaries Failed To Obtain Import Licenses </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AssessedFine" xlink:type="locator" xlink:label="tdw_AssessedFine"/>
<label xml:lang="en-US" xlink:label="tdw_AssessedFine_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Assessed fine. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AssessedFine" xlink:to="tdw_AssessedFine_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_DepositAmount" xlink:type="locator" xlink:label="tdw_DepositAmount"/>
<label xml:lang="en-US" xlink:label="tdw_DepositAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Deposit amount. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DepositAmount" xlink:to="tdw_DepositAmount_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_FineAmount" xlink:type="locator" xlink:label="tdw_FineAmount"/>
<label xml:lang="en-US" xlink:label="tdw_FineAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Fine amount. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FineAmount" xlink:to="tdw_FineAmount_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_RemainingFineResolvedInEntityFavorAmount" xlink:type="locator" xlink:label="tdw_RemainingFineResolvedInEntityFavorAmount"/>
<label xml:lang="en-US" xlink:label="tdw_RemainingFineResolvedInEntityFavorAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Remaining fine resolved in entity favor amount. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RemainingFineResolvedInEntityFavorAmount" xlink:to="tdw_RemainingFineResolvedInEntityFavorAmount_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_RemainingFineOriginalAmount" xlink:type="locator" xlink:label="tdw_RemainingFineOriginalAmount"/>
<label xml:lang="en-US" xlink:label="tdw_RemainingFineOriginalAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Remaining fine original amount. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RemainingFineOriginalAmount" xlink:to="tdw_RemainingFineOriginalAmount_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AssessedFine_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fines assessed </label>
<label xml:lang="en-US" xlink:label="tdw_AssessedFine_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Assessed Fine </label>
<label xml:lang="en-US" xlink:label="tdw_DepositAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deposit Amount </label>
<label xml:lang="en-US" xlink:label="tdw_DepositAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Deposit Amount </label>
<label xml:lang="en-US" xlink:label="tdw_FineAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Amount of fines contested </label>
<label xml:lang="en-US" xlink:label="tdw_FineAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fine Amount </label>
<label xml:lang="en-US" xlink:label="tdw_RemainingFineResolvedInEntityFavorAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Remaining amount of fine resolved in entity favor </label>
<label xml:lang="en-US" xlink:label="tdw_RemainingFineResolvedInEntityFavorAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Remaining Fine Resolved In Entity Favor Amount </label>
<label xml:lang="en-US" xlink:label="tdw_RemainingFineOriginalAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Original fine amount </label>
<label xml:lang="en-US" xlink:label="tdw_RemainingFineOriginalAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Remaining Fine Original Amount </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PercentageOfCustomDutyForVesselRepair" xlink:type="locator" xlink:label="tdw_PercentageOfCustomDutyForVesselRepair"/>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfCustomDutyForVesselRepair_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Percentage of custom duty for vessel repair. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PercentageOfCustomDutyForVesselRepair" xlink:to="tdw_PercentageOfCustomDutyForVesselRepair_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfCustomDutyForVesselRepair_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of vessel repair duty </label>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfCustomDutyForVesselRepair_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Percentage Of Custom Duty For Vessel Repair </label>
<loc xlink:href="tdw-20171231.xsd#tdw_LitigationSettlementReductionAmount" xlink:type="locator" xlink:label="tdw_LitigationSettlementReductionAmount"/>
<label xml:lang="en-US" xlink:label="tdw_LitigationSettlementReductionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Litigation settlement reduction amount. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_LitigationSettlementReductionAmount" xlink:to="tdw_LitigationSettlementReductionAmount_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_LitigationSettlementInterestPercentageOfInterest" xlink:type="locator" xlink:label="tdw_LitigationSettlementInterestPercentageOfInterest"/>
<label xml:lang="en-US" xlink:label="tdw_LitigationSettlementInterestPercentageOfInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Litigation settlement interest percentage of interest. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_LitigationSettlementInterestPercentageOfInterest" xlink:to="tdw_LitigationSettlementInterestPercentageOfInterest_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfSubsidiariesAwardedGrant" xlink:type="locator" xlink:label="tdw_NumberOfSubsidiariesAwardedGrant"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfSubsidiariesAwardedGrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of subsidiaries awarded grant. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfSubsidiariesAwardedGrant" xlink:to="tdw_NumberOfSubsidiariesAwardedGrant_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LitigationStatusAxis" xlink:type="locator" xlink:label="us-gaap_LitigationStatusAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_LitigationStatusAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Litigation Status </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LitigationStatusAxis" xlink:to="us-gaap_LitigationStatusAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LitigationStatusAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Litigation Status [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LitigationStatusDomain" xlink:type="locator" xlink:label="us-gaap_LitigationStatusDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_LitigationStatusDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Litigation Status </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LitigationStatusDomain" xlink:to="us-gaap_LitigationStatusDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LitigationStatusDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Litigation Status [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_CompensatoryPurposesMember" xlink:type="locator" xlink:label="tdw_CompensatoryPurposesMember"/>
<label xml:lang="en-US" xlink:label="tdw_CompensatoryPurposesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Compensatory purposes. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CompensatoryPurposesMember" xlink:to="tdw_CompensatoryPurposesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_CompensatoryPurposesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Compensatory Purposes </label>
<label xml:lang="en-US" xlink:label="tdw_CompensatoryPurposesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Compensatory Purposes [Member] </label>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_VE" xlink:type="locator" xlink:label="country_VE"/>
<label xml:lang="en-US" xlink:label="country_VE_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> VENEZUELA </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_VE" xlink:to="country_VE_lbl"/>
<label xml:lang="en-US" xlink:label="country_VE_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> VENEZUELA </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GainContingenciesByNatureAxis" xlink:type="locator" xlink:label="us-gaap_GainContingenciesByNatureAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_GainContingenciesByNatureAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Gain Contingencies, Nature </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainContingenciesByNatureAxis" xlink:to="us-gaap_GainContingenciesByNatureAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_GainContingenciesByNatureAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Gain Contingencies By Nature [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GainContingencyNatureDomain" xlink:type="locator" xlink:label="us-gaap_GainContingencyNatureDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_GainContingencyNatureDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Gain Contingency, Nature </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainContingencyNatureDomain" xlink:to="us-gaap_GainContingencyNatureDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_GainContingencyNatureDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Gain Contingency Nature [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NetInterestSettlementsMember" xlink:type="locator" xlink:label="tdw_NetInterestSettlementsMember"/>
<label xml:lang="en-US" xlink:label="tdw_NetInterestSettlementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Net interest settlements. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NetInterestSettlementsMember" xlink:to="tdw_NetInterestSettlementsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_NetInterestSettlementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Net Interest Settlements </label>
<label xml:lang="en-US" xlink:label="tdw_NetInterestSettlementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Net Interest Settlements [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_LegalAndOtherSettlementsMember" xlink:type="locator" xlink:label="tdw_LegalAndOtherSettlementsMember"/>
<label xml:lang="en-US" xlink:label="tdw_LegalAndOtherSettlementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Legal and other settlements. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_LegalAndOtherSettlementsMember" xlink:to="tdw_LegalAndOtherSettlementsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_LegalAndOtherSettlementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Legal And Other Settlements </label>
<label xml:lang="en-US" xlink:label="tdw_LegalAndOtherSettlementsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Legal And Other Settlements [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfSubsidiariesAwardedGrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of subsidiaries awarded grant </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfSubsidiariesAwardedGrant_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Subsidiaries Awarded Grant </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_LitigationSettlementAmountAwardedToOtherParty" xlink:type="locator" xlink:label="us-gaap_LitigationSettlementAmountAwardedToOtherParty"/>
<label xml:lang="en-US" xlink:label="us-gaap_LitigationSettlementAmountAwardedToOtherParty_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Compensation awarded to the claimants </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LitigationSettlementAmountAwardedToOtherParty" xlink:to="us-gaap_LitigationSettlementAmountAwardedToOtherParty_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_LitigationSettlementAmountAwardedToOtherParty_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Litigation Settlement Amount Awarded To Other Party </label>
<label xml:lang="en-US" xlink:label="tdw_LitigationSettlementReductionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Litigation settlement reduction amount </label>
<label xml:lang="en-US" xlink:label="tdw_LitigationSettlementReductionAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Litigation Settlement Reduction Amount </label>
<label xml:lang="en-US" xlink:label="tdw_LitigationSettlementInterestPercentageOfInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Litigation Settlement Interest Percentage Of Interest </label>
<label xml:lang="en-US" xlink:label="tdw_LitigationSettlementInterestPercentageOfInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Litigation Settlement Interest Percentage Of Interest </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ShortTermDepositsMaximumMaturityPeriod" xlink:type="locator" xlink:label="tdw_ShortTermDepositsMaximumMaturityPeriod"/>
<label xml:lang="en-US" xlink:label="tdw_ShortTermDepositsMaximumMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Short term deposits maximum maturity period. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ShortTermDepositsMaximumMaturityPeriod" xlink:to="tdw_ShortTermDepositsMaximumMaturityPeriod_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:type="locator" xlink:label="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:to="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FinancialInstrumentAxis" xlink:type="locator" xlink:label="us-gaap_FinancialInstrumentAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Financial Instrument </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FinancialInstrumentAxis" xlink:to="us-gaap_FinancialInstrumentAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Financial Instrument [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:type="locator" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Financial Instruments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain" xlink:to="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForwardContractsMember" xlink:type="locator" xlink:label="us-gaap_ForwardContractsMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForwardContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Forward Contracts </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForwardContractsMember" xlink:to="us-gaap_ForwardContractsMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForwardContractsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Forward Contracts [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:type="locator" xlink:label="us-gaap_DerivativesFairValueLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_DerivativesFairValueLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Derivatives, Fair Value [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativesFairValueLineItems" xlink:to="us-gaap_DerivativesFairValueLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DerivativesFairValueLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Derivatives Fair Value [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ShortTermDepositsMaximumMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash equivalents maturity period, days </label>
<label xml:lang="en-US" xlink:label="tdw_ShortTermDepositsMaximumMaturityPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Short Term Deposits Maximum Maturity Period </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NotionalValueEquivalentOfForwardContract" xlink:type="locator" xlink:label="tdw_NotionalValueEquivalentOfForwardContract"/>
<label xml:lang="en-US" xlink:label="tdw_NotionalValueEquivalentOfForwardContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Notional value equivalent of forward contract. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NotionalValueEquivalentOfForwardContract" xlink:to="tdw_NotionalValueEquivalentOfForwardContract_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_DerivativeNumberOfInstrumentsHeld" xlink:type="locator" xlink:label="us-gaap_DerivativeNumberOfInstrumentsHeld"/>
<label xml:lang="en-US" xlink:label="us-gaap_DerivativeNumberOfInstrumentsHeld_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of contracts outstanding </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DerivativeNumberOfInstrumentsHeld" xlink:to="us-gaap_DerivativeNumberOfInstrumentsHeld_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_DerivativeNumberOfInstrumentsHeld_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Derivative Number Of Instruments Held </label>
<label xml:lang="en-US" xlink:label="tdw_NotionalValueEquivalentOfForwardContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Notional value of foreign exchange contract </label>
<label xml:lang="en-US" xlink:label="tdw_NotionalValueEquivalentOfForwardContract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Notional Value Equivalent Of Forward Contract </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_UnrealizedGainLossOnDerivatives" xlink:type="locator" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Gain (loss) on Derivatives </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrealizedGainLossOnDerivatives" xlink:to="us-gaap_UnrealizedGainLossOnDerivatives_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Unrealized Gain Loss On Derivatives </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:type="locator" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueByAssetClassAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByAssetClassAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueByAssetClassAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Asset Class </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueByAssetClassAxis" xlink:to="us-gaap_FairValueByAssetClassAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueByAssetClassAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value By Asset Class [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:type="locator" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Asset Class </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:to="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MoneyMarketFundsMember" xlink:type="locator" xlink:label="us-gaap_MoneyMarketFundsMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_MoneyMarketFundsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Money Market Cash Equivalents </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MoneyMarketFundsMember" xlink:to="us-gaap_MoneyMarketFundsMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_MoneyMarketFundsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Money Market Funds [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:type="locator" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AssetsFairValueDisclosureRecurring" xlink:type="locator" xlink:label="us-gaap_AssetsFairValueDisclosureRecurring"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetsFairValueDisclosureRecurring_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair value of assets </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsFairValueDisclosureRecurring" xlink:to="us-gaap_AssetsFairValueDisclosureRecurring_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AssetsFairValueDisclosureRecurring_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Assets Fair Value Disclosure Recurring </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfVesselsSoldOrScrapped" xlink:type="locator" xlink:label="tdw_NumberOfVesselsSoldOrScrapped"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsSoldOrScrapped_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of Vessels Sold or Scrapped </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfVesselsSoldOrScrapped" xlink:to="tdw_NumberOfVesselsSoldOrScrapped_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:type="locator" xlink:label="us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Impaired Assets To Be Disposed Of By Method Other Than Sale [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable" xlink:to="us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Impaired Assets To Be Disposed Of By Method Other Than Sale [Table] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_VesselsMember" xlink:type="locator" xlink:label="tdw_VesselsMember"/>
<label xml:lang="en-US" xlink:label="tdw_VesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Vessels. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_VesselsMember" xlink:to="tdw_VesselsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_VesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Vessels </label>
<label xml:lang="en-US" xlink:label="tdw_VesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Vessels [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems" xlink:type="locator" xlink:label="us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Impaired Assets to be Disposed of by Method Other than Sale [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems" xlink:to="us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ImpairedAssetsToBeDisposedOfByMethodOtherThanSaleLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Impaired Assets To Be Disposed Of By Method Other Than Sale [Line Items] </label>
<label xml:lang="en-US" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel"> Gain (loss) on vessels disposed </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsSoldOrScrapped_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of vessels disposed </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsSoldOrScrapped_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Vessels Sold Or Scrapped </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfRemotelyOperatedVehiclesSoldOrScrapped" xlink:type="locator" xlink:label="tdw_NumberOfRemotelyOperatedVehiclesSoldOrScrapped"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfRemotelyOperatedVehiclesSoldOrScrapped_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of remotely operated vehicles sold or scrapped. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfRemotelyOperatedVehiclesSoldOrScrapped" xlink:to="tdw_NumberOfRemotelyOperatedVehiclesSoldOrScrapped_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_RemotelyOperatedVehiclesMember" xlink:type="locator" xlink:label="tdw_RemotelyOperatedVehiclesMember"/>
<label xml:lang="en-US" xlink:label="tdw_RemotelyOperatedVehiclesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Remotely operated vehicles. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_RemotelyOperatedVehiclesMember" xlink:to="tdw_RemotelyOperatedVehiclesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_RemotelyOperatedVehiclesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> ROVs </label>
<label xml:lang="en-US" xlink:label="tdw_RemotelyOperatedVehiclesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Remotely Operated Vehicles [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementBusinessSegmentsAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Segments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_StatementBusinessSegmentsAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Statement Business Segments [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentDomain" xlink:type="locator" xlink:label="us-gaap_SegmentDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_SegmentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Segments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentDomain" xlink:to="us-gaap_SegmentDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SegmentDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Segment [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SubseaBusinessMember" xlink:type="locator" xlink:label="tdw_SubseaBusinessMember"/>
<label xml:lang="en-US" xlink:label="tdw_SubseaBusinessMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Subsea business. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SubseaBusinessMember" xlink:to="tdw_SubseaBusinessMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SubseaBusinessMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Subsea Business </label>
<label xml:lang="en-US" xlink:label="tdw_SubseaBusinessMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Subsea Business [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfRemotelyOperatedVehiclesSoldOrScrapped_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of ROVs disposed </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfRemotelyOperatedVehiclesSoldOrScrapped_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Remotely Operated Vehicles Sold Or Scrapped </label>
<label xml:lang="en-US" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Gain on dispositions of assets </label>
<label xml:lang="en-US" xlink:label="us-gaap_SaleLeasebackTransactionCurrentPeriodGainRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Amortized gains on sale/leaseback transactions </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NumberOfOperatingSegments" xlink:type="locator" xlink:label="us-gaap_NumberOfOperatingSegments"/>
<label xml:lang="en-US" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of operating segments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfOperatingSegments" xlink:to="us-gaap_NumberOfOperatingSegments_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Operating Segments </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AssetsExcludingEquityInvestments" xlink:type="locator" xlink:label="tdw_AssetsExcludingEquityInvestments"/>
<label xml:lang="en-US" xlink:label="tdw_AssetsExcludingEquityInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Assets excluding equity investments. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AssetsExcludingEquityInvestments" xlink:to="tdw_AssetsExcludingEquityInvestments_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AssetsExceptForCorporatePortion" xlink:type="locator" xlink:label="tdw_AssetsExceptForCorporatePortion"/>
<label xml:lang="en-US" xlink:label="tdw_AssetsExceptForCorporatePortion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Assets except for corporate portion. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AssetsExceptForCorporatePortion" xlink:to="tdw_AssetsExceptForCorporatePortion_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Segment Reporting Information By Segment [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Segment Reporting Information By Segment [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:type="locator" xlink:label="us-gaap_ConsolidationItemsAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConsolidationItemsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Consolidation Items </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConsolidationItemsAxis" xlink:to="us-gaap_ConsolidationItemsAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConsolidationItemsAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Consolidation Items [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:type="locator" xlink:label="us-gaap_ConsolidationItemsDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConsolidationItemsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Consolidation Items </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConsolidationItemsDomain" xlink:to="us-gaap_ConsolidationItemsDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConsolidationItemsDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Consolidation Items [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:type="locator" xlink:label="us-gaap_OperatingSegmentsMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Operating Segments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingSegmentsMember" xlink:to="us-gaap_OperatingSegmentsMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Operating Segments [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:type="locator" xlink:label="us-gaap_CorporateNonSegmentMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_CorporateNonSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Corporate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CorporateNonSegmentMember" xlink:to="us-gaap_CorporateNonSegmentMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CorporateNonSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Corporate Non Segment [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AmericasSegmentMember" xlink:type="locator" xlink:label="tdw_AmericasSegmentMember"/>
<label xml:lang="en-US" xlink:label="tdw_AmericasSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Americas Segment [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AmericasSegmentMember" xlink:to="tdw_AmericasSegmentMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AmericasSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Americas </label>
<label xml:lang="en-US" xlink:label="tdw_AmericasSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Americas Segment [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AfricaAndEuropeMember" xlink:type="locator" xlink:label="tdw_AfricaAndEuropeMember"/>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Africa and Europe. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AfricaAndEuropeMember" xlink:to="tdw_AfricaAndEuropeMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Africa/Europe </label>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Africa And Europe [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_MiddleEastAndAsiaPacificSegmentMember" xlink:type="locator" xlink:label="tdw_MiddleEastAndAsiaPacificSegmentMember"/>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Middle East and Asia Pacific segment. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_MiddleEastAndAsiaPacificSegmentMember" xlink:to="tdw_MiddleEastAndAsiaPacificSegmentMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Middle East/Asia Pacific </label>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificSegmentMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Middle East And Asia Pacific Segment [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllOtherSegmentsMember" xlink:type="locator" xlink:label="us-gaap_AllOtherSegmentsMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_AllOtherSegmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> All Other Segments </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllOtherSegmentsMember" xlink:to="us-gaap_AllOtherSegmentsMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AllOtherSegmentsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> All Other Segments [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:type="locator" xlink:label="us-gaap_SegmentReportingInformationLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Segment Reporting Information [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentReportingInformationLineItems" xlink:to="us-gaap_SegmentReportingInformationLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Segment Reporting Information [Line Items] </label>
<label xml:lang="en-US" xlink:label="us-gaap_Revenues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Total revenues </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_GrossProfit" xlink:type="locator" xlink:label="us-gaap_GrossProfit"/>
<label xml:lang="en-US" xlink:label="us-gaap_GrossProfit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Operating profit (loss) </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GrossProfit" xlink:to="us-gaap_GrossProfit_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_GrossProfit_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Gross Profit </label>
<label xml:lang="en-US" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> General and administrative expenses </label>
<label xml:lang="en-US" xlink:label="tdw_CorporateExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Corporate expenses </label>
<label xml:lang="en-US" xlink:label="tdw_CorporateExpenses_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Corporate Expenses </label>
<label xml:lang="en-US" xlink:label="us-gaap_GainLossOnDispositionOfAssets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Gain on asset dispositions, net </label>
<label xml:lang="en-US" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel"> Asset impairments </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_InterestExpense" xlink:type="locator" xlink:label="us-gaap_InterestExpense"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel"> Interest and other debt costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_InterestExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Interest Expense </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAdditions" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentAdditions"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additions to properties and equipment </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentAdditions" xlink:to="us-gaap_PropertyPlantAndEquipmentAdditions_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_PropertyPlantAndEquipmentAdditions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Property Plant And Equipment Additions </label>
<label xml:lang="en-US" xlink:label="us-gaap_Assets_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Assets </label>
<label xml:lang="en-US" xlink:label="tdw_AssetsExcludingEquityInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Assets excluding equity investments </label>
<label xml:lang="en-US" xlink:label="tdw_AssetsExcludingEquityInvestments_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Assets Excluding Equity Investments </label>
<label xml:lang="en-US" xlink:label="tdw_AssetsExceptForCorporatePortion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel"> Assets except corporate portion </label>
<label xml:lang="en-US" xlink:label="tdw_AssetsExceptForCorporatePortion_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Assets Except For Corporate Portion </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Business Acquisition </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Business Acquisition [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Business Acquisition, Acquiree </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Business Acquisition Acquiree [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_CorporateVesselsMember" xlink:type="locator" xlink:label="tdw_CorporateVesselsMember"/>
<label xml:lang="en-US" xlink:label="tdw_CorporateVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Corporate Vessels [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CorporateVesselsMember" xlink:to="tdw_CorporateVesselsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_CorporateVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Corporate Vessels </label>
<label xml:lang="en-US" xlink:label="tdw_CorporateVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Corporate Vessels [Member] </label>
<label xml:lang="en-US" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> General and administrative expenses </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConstructionAndDevelopmentCosts" xlink:type="locator" xlink:label="us-gaap_ConstructionAndDevelopmentCosts"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConstructionAndDevelopmentCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Construction costs </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConstructionAndDevelopmentCosts" xlink:to="us-gaap_ConstructionAndDevelopmentCosts_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConstructionAndDevelopmentCosts_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Construction And Development Costs </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SegmentAndGeographicDistributionOfOperationsLineItems" xlink:type="locator" xlink:label="tdw_SegmentAndGeographicDistributionOfOperationsLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_SegmentAndGeographicDistributionOfOperationsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Segment and Geographic Distribution of Operations [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SegmentAndGeographicDistributionOfOperationsLineItems" xlink:to="tdw_SegmentAndGeographicDistributionOfOperationsLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_SegmentAndGeographicDistributionOfOperationsTable" xlink:type="locator" xlink:label="tdw_SegmentAndGeographicDistributionOfOperationsTable"/>
<label xml:lang="en-US" xlink:label="tdw_SegmentAndGeographicDistributionOfOperationsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Segment and Geographic Distribution of Operations [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SegmentAndGeographicDistributionOfOperationsTable" xlink:to="tdw_SegmentAndGeographicDistributionOfOperationsTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SegmentAndGeographicDistributionOfOperationsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Segment And Geographic Distribution Of Operations [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_SegmentAndGeographicDistributionOfOperationsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Segment And Geographic Distribution Of Operations [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductOrServiceAxis" xlink:type="locator" xlink:label="us-gaap_ProductOrServiceAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProductOrServiceAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Products and Services </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProductOrServiceAxis" xlink:to="us-gaap_ProductOrServiceAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProductOrServiceAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Product Or Service [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ProductsAndServicesDomain" xlink:type="locator" xlink:label="us-gaap_ProductsAndServicesDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProductsAndServicesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Products and Services </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProductsAndServicesDomain" xlink:to="us-gaap_ProductsAndServicesDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ProductsAndServicesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Products And Services [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AmericasFleetDeepwaterVesselsMember" xlink:type="locator" xlink:label="tdw_AmericasFleetDeepwaterVesselsMember"/>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Americas Fleet Deepwater </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AmericasFleetDeepwaterVesselsMember" xlink:to="tdw_AmericasFleetDeepwaterVesselsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Americas Fleet Deepwater vessels </label>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Americas Fleet Deepwater Vessels [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AmericasFleetTowingSupplyOrSupplyMember" xlink:type="locator" xlink:label="tdw_AmericasFleetTowingSupplyOrSupplyMember"/>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetTowingSupplyOrSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Americas Fleet Towing Supply or Supply [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AmericasFleetTowingSupplyOrSupplyMember" xlink:to="tdw_AmericasFleetTowingSupplyOrSupplyMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetTowingSupplyOrSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Americas Fleet Towing-Supply/supply </label>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetTowingSupplyOrSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Americas Fleet Towing Supply Or Supply [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AmericasFleetOtherMember" xlink:type="locator" xlink:label="tdw_AmericasFleetOtherMember"/>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Americas Fleet Other [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AmericasFleetOtherMember" xlink:to="tdw_AmericasFleetOtherMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Americas Fleet Other </label>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Americas Fleet Other [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AmericasFleetMember" xlink:type="locator" xlink:label="tdw_AmericasFleetMember"/>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Americas Fleet [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AmericasFleetMember" xlink:to="tdw_AmericasFleetMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Americas Fleet </label>
<label xml:lang="en-US" xlink:label="tdw_AmericasFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Americas Fleet [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_MiddleEastAndAsiaPacificFleetDeepwaterVesselsMember" xlink:type="locator" xlink:label="tdw_MiddleEastAndAsiaPacificFleetDeepwaterVesselsMember"/>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Middle East And Asia Pacific fleet deepwater vessels. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_MiddleEastAndAsiaPacificFleetDeepwaterVesselsMember" xlink:to="tdw_MiddleEastAndAsiaPacificFleetDeepwaterVesselsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Middle East/Asia Pacific Fleet Deepwater vessels </label>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Middle East And Asia Pacific Fleet Deepwater Vessels [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_MiddleEastAndAsiaPacificFleetTowingSupplyAndSupplyMember" xlink:type="locator" xlink:label="tdw_MiddleEastAndAsiaPacificFleetTowingSupplyAndSupplyMember"/>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetTowingSupplyAndSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Middle East And Asia Pacific fleet towing supply and supply. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_MiddleEastAndAsiaPacificFleetTowingSupplyAndSupplyMember" xlink:to="tdw_MiddleEastAndAsiaPacificFleetTowingSupplyAndSupplyMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetTowingSupplyAndSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Middle East/Asia Pacific Fleet Towing-Supply/supply </label>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetTowingSupplyAndSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Middle East And Asia Pacific Fleet Towing Supply And Supply [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_MiddleEastAndAsiaPacificFleetOtherMember" xlink:type="locator" xlink:label="tdw_MiddleEastAndAsiaPacificFleetOtherMember"/>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Middle East And Asia Pacific fleet other. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_MiddleEastAndAsiaPacificFleetOtherMember" xlink:to="tdw_MiddleEastAndAsiaPacificFleetOtherMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Middle East/Asia Pacific Fleet Other </label>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Middle East And Asia Pacific Fleet Other [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_MiddleEastAndAsiaPacificFleetMember" xlink:type="locator" xlink:label="tdw_MiddleEastAndAsiaPacificFleetMember"/>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Middle East And Asia Pacific fleet. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_MiddleEastAndAsiaPacificFleetMember" xlink:to="tdw_MiddleEastAndAsiaPacificFleetMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Middle East/Asia Pacific Fleet </label>
<label xml:lang="en-US" xlink:label="tdw_MiddleEastAndAsiaPacificFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Middle East And Asia Pacific Fleet [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AfricaAndEuropeFleetDeepwaterVesselsMember" xlink:type="locator" xlink:label="tdw_AfricaAndEuropeFleetDeepwaterVesselsMember"/>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Africa and Europe fleet deepwater vessels. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AfricaAndEuropeFleetDeepwaterVesselsMember" xlink:to="tdw_AfricaAndEuropeFleetDeepwaterVesselsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Africa/Europe Fleet Deepwater vessels </label>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Africa And Europe Fleet Deepwater Vessels [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AfricaAndEuropeFleetTowingSupplyAndSupplyMember" xlink:type="locator" xlink:label="tdw_AfricaAndEuropeFleetTowingSupplyAndSupplyMember"/>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetTowingSupplyAndSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Africa and Europe fleet towing supply and supply. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AfricaAndEuropeFleetTowingSupplyAndSupplyMember" xlink:to="tdw_AfricaAndEuropeFleetTowingSupplyAndSupplyMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetTowingSupplyAndSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Africa/Europe Fleet Towing-Supply/supply </label>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetTowingSupplyAndSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Africa And Europe Fleet Towing Supply And Supply [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AfricaAndEuropeFleetOtherMember" xlink:type="locator" xlink:label="tdw_AfricaAndEuropeFleetOtherMember"/>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Africa and Europe fleet other. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AfricaAndEuropeFleetOtherMember" xlink:to="tdw_AfricaAndEuropeFleetOtherMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Africa And Europe Fleet Other </label>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Africa And Europe Fleet Other [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_AfricaAndEuropeFleetMember" xlink:type="locator" xlink:label="tdw_AfricaAndEuropeFleetMember"/>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Africa and Europe fleet. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AfricaAndEuropeFleetMember" xlink:to="tdw_AfricaAndEuropeFleetMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Africa/Europe Fleet </label>
<label xml:lang="en-US" xlink:label="tdw_AfricaAndEuropeFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Africa And Europe Fleet [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_WorldwideFleetDeepwaterVesselsMember" xlink:type="locator" xlink:label="tdw_WorldwideFleetDeepwaterVesselsMember"/>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Worldwide Fleet Deepwater Vessels [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_WorldwideFleetDeepwaterVesselsMember" xlink:to="tdw_WorldwideFleetDeepwaterVesselsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Worldwide Fleet Deepwater vessels </label>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetDeepwaterVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Worldwide Fleet Deepwater Vessels [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_WorldwideFleetTowingSupplyAndSupplyMember" xlink:type="locator" xlink:label="tdw_WorldwideFleetTowingSupplyAndSupplyMember"/>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetTowingSupplyAndSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Worldwide Fleet Towing Supply and Supply [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_WorldwideFleetTowingSupplyAndSupplyMember" xlink:to="tdw_WorldwideFleetTowingSupplyAndSupplyMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetTowingSupplyAndSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Worldwide Fleet Towing-Supply/supply </label>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetTowingSupplyAndSupplyMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Worldwide Fleet Towing Supply And Supply [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_WorldwideFleetOtherMember" xlink:type="locator" xlink:label="tdw_WorldwideFleetOtherMember"/>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Worldwide Fleet Other [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_WorldwideFleetOtherMember" xlink:to="tdw_WorldwideFleetOtherMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Worldwide Fleet Other </label>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetOtherMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Worldwide Fleet Other [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_WorldwideFleetMember" xlink:type="locator" xlink:label="tdw_WorldwideFleetMember"/>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Worldwide Fleet [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_WorldwideFleetMember" xlink:to="tdw_WorldwideFleetMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Worldwide Fleet </label>
<label xml:lang="en-US" xlink:label="tdw_WorldwideFleetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Worldwide Fleet [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_SegmentAndGeographicDistributionOfOperationsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Segment and Geographic Distribution of Operations [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_SegmentAndGeographicDistributionOfOperationsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Segment And Geographic Distribution Of Operations [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_SalesRevenueServicesPercentage_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Percentage of revenue </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule Of Entity Wide Revenue By Major Customers By Reporting Segments [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable" xlink:to="us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Entity Wide Revenue By Major Customers By Reporting Segments [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_MajorCustomersAxis" xlink:type="locator" xlink:label="us-gaap_MajorCustomersAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_MajorCustomersAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Customer </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MajorCustomersAxis" xlink:to="us-gaap_MajorCustomersAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_MajorCustomersAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Major Customers [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_NameOfMajorCustomerDomain" xlink:type="locator" xlink:label="us-gaap_NameOfMajorCustomerDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_NameOfMajorCustomerDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Customer </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NameOfMajorCustomerDomain" xlink:to="us-gaap_NameOfMajorCustomerDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_NameOfMajorCustomerDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Name Of Major Customer [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ChevronCorporationMember" xlink:type="locator" xlink:label="tdw_ChevronCorporationMember"/>
<label xml:lang="en-US" xlink:label="tdw_ChevronCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Chevron Corporation [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ChevronCorporationMember" xlink:to="tdw_ChevronCorporationMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ChevronCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Chevron Corporation </label>
<label xml:lang="en-US" xlink:label="tdw_ChevronCorporationMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Chevron Corporation [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_FreeportMcMoRanMember" xlink:type="locator" xlink:label="tdw_FreeportMcMoRanMember"/>
<label xml:lang="en-US" xlink:label="tdw_FreeportMcMoRanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Freeport McMoRan </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_FreeportMcMoRanMember" xlink:to="tdw_FreeportMcMoRanMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_FreeportMcMoRanMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Freeport Mc Mo Ran [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_SaudiAramcoMember" xlink:type="locator" xlink:label="tdw_SaudiAramcoMember"/>
<label xml:lang="en-US" xlink:label="tdw_SaudiAramcoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Saudi Aramco. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_SaudiAramcoMember" xlink:to="tdw_SaudiAramcoMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_SaudiAramcoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Saudi Aramco </label>
<label xml:lang="en-US" xlink:label="tdw_SaudiAramcoMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Saudi Aramco [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskByBenchmarkAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskByBenchmarkAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Concentration Risk Benchmark </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:to="us-gaap_ConcentrationRiskByBenchmarkAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskByBenchmarkAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Concentration Risk By Benchmark [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskBenchmarkDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskBenchmarkDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Concentration Risk Benchmark </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskBenchmarkDomain" xlink:to="us-gaap_ConcentrationRiskBenchmarkDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskBenchmarkDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Concentration Risk Benchmark [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SalesRevenueNetMember" xlink:type="locator" xlink:label="us-gaap_SalesRevenueNetMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_SalesRevenueNetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sales Revenue, Net </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SalesRevenueNetMember" xlink:to="us-gaap_SalesRevenueNetMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SalesRevenueNetMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sales Revenue Net [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskByTypeAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Concentration Risk Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskByTypeAxis" xlink:to="us-gaap_ConcentrationRiskByTypeAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskByTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Concentration Risk By Type [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskTypeDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Concentration Risk Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskTypeDomain" xlink:to="us-gaap_ConcentrationRiskTypeDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Concentration Risk Type [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_CustomerConcentrationRiskMember" xlink:type="locator" xlink:label="us-gaap_CustomerConcentrationRiskMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_CustomerConcentrationRiskMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Customer Concentration Risk </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CustomerConcentrationRiskMember" xlink:to="us-gaap_CustomerConcentrationRiskMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_CustomerConcentrationRiskMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Customer Concentration Risk [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_EntityWideRevenueMajorCustomerLineItems" xlink:type="locator" xlink:label="us-gaap_EntityWideRevenueMajorCustomerLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_EntityWideRevenueMajorCustomerLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Entity Wide Revenue Major Customer [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EntityWideRevenueMajorCustomerLineItems" xlink:to="us-gaap_EntityWideRevenueMajorCustomerLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_EntityWideRevenueMajorCustomerLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Entity Wide Revenue Major Customer [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:type="locator" xlink:label="us-gaap_ConcentrationRiskPercentage1"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskPercentage1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Total revenue percentage </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskPercentage1" xlink:to="us-gaap_ConcentrationRiskPercentage1_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ConcentrationRiskPercentage1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Concentration Risk Percentage1 </label>
<loc xlink:href="tdw-20171231.xsd#tdw_QuarterlyFinancialDataLineItems" xlink:type="locator" xlink:label="tdw_QuarterlyFinancialDataLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_QuarterlyFinancialDataLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Quarterly Financial Data [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_QuarterlyFinancialDataLineItems" xlink:to="tdw_QuarterlyFinancialDataLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_QuarterlyFinancialDataTable" xlink:type="locator" xlink:label="tdw_QuarterlyFinancialDataTable"/>
<label xml:lang="en-US" xlink:label="tdw_QuarterlyFinancialDataTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Quarterly Financial Data [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_QuarterlyFinancialDataTable" xlink:to="tdw_QuarterlyFinancialDataTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_QuarterlyFinancialDataTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Quarterly Financial Data [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_QuarterlyFinancialDataTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Quarterly Financial Data [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_QuarterlyFinancialDataLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Quarterly Financial Data [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_QuarterlyFinancialDataLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Quarterly Financial Data [Line Items] </label>
<label xml:lang="en-US" xlink:label="us-gaap_Revenues_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Revenues </label>
<label xml:lang="en-US" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Operating income (loss) </label>
<label xml:lang="en-US" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Net loss attributable to Tidewater Inc. </label>
<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel"> Basic loss per share attributable to Tidewater Inc. </label>
<label xml:lang="en-US" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/positiveLabel"> Diluted loss per share attributable to Tidewater Inc. </label>
<loc xlink:href="tdw-20171231.xsd#tdw_EarlyCancellationOfLongTermVesselCharterContractMember" xlink:type="locator" xlink:label="tdw_EarlyCancellationOfLongTermVesselCharterContractMember"/>
<label xml:lang="en-US" xlink:label="tdw_EarlyCancellationOfLongTermVesselCharterContractMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Early cancellation of a long-term vessel charter contract. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_EarlyCancellationOfLongTermVesselCharterContractMember" xlink:to="tdw_EarlyCancellationOfLongTermVesselCharterContractMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_EarlyCancellationOfLongTermVesselCharterContractMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Early Cancellation of Long-Term Vessel Charter Contract </label>
<label xml:lang="en-US" xlink:label="tdw_EarlyCancellationOfLongTermVesselCharterContractMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Early Cancellation Of Long Term Vessel Charter Contract [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfVesselsImpairedDuringPeriod" xlink:type="locator" xlink:label="tdw_NumberOfVesselsImpairedDuringPeriod"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsImpairedDuringPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of vessels impaired during period. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfVesselsImpairedDuringPeriod" xlink:to="tdw_NumberOfVesselsImpairedDuringPeriod_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_AssetsFairValueDisclosure1" xlink:type="locator" xlink:label="tdw_AssetsFairValueDisclosure1"/>
<label xml:lang="en-US" xlink:label="tdw_AssetsFairValueDisclosure1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Assets Fair Value Disclosure 1 </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_AssetsFairValueDisclosure1" xlink:to="tdw_AssetsFairValueDisclosure1_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_StackedVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Stacked Vessels </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ActiveVesselsMember" xlink:type="locator" xlink:label="tdw_ActiveVesselsMember"/>
<label xml:lang="en-US" xlink:label="tdw_ActiveVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Active Vessels [Member] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ActiveVesselsMember" xlink:to="tdw_ActiveVesselsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ActiveVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Active Vessels </label>
<label xml:lang="en-US" xlink:label="tdw_ActiveVesselsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Active Vessels [Member] </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsImpairedDuringPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of vessels impaired during the period </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfVesselsImpairedDuringPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Vessels Impaired During Period </label>
<label xml:lang="en-US" xlink:label="tdw_AssetsFairValueDisclosure1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Fair value of assets incurring impairment </label>
<label xml:lang="en-US" xlink:label="tdw_AssetsFairValueDisclosure1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Assets Fair Value Disclosure1 </label>
<loc xlink:href="tdw-20171231.xsd#tdw_NumberOfRemotelyOperatedVehiclesImpairedDuringPeriod" xlink:type="locator" xlink:label="tdw_NumberOfRemotelyOperatedVehiclesImpairedDuringPeriod"/>
<label xml:lang="en-US" xlink:label="tdw_NumberOfRemotelyOperatedVehiclesImpairedDuringPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Number of remotely operated vehicles impaired during period. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_NumberOfRemotelyOperatedVehiclesImpairedDuringPeriod" xlink:to="tdw_NumberOfRemotelyOperatedVehiclesImpairedDuringPeriod_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsLineItems" xlink:type="locator" xlink:label="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of combined fair value of assets that incurred impairments. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsLineItems" xlink:to="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsTable" xlink:type="locator" xlink:label="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsTable"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Schedule of combined fair value of assets that incurred impairments. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsTable" xlink:to="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Combined Fair Value of Assets that Incurred Impairments [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Combined Fair Value Of Assets That Incurred Impairments [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Schedule of Combined Fair Value of Assets that Incurred Impairments [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_ScheduleOfCombinedFairValueOfAssetsThatIncurredImpairmentsLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Schedule Of Combined Fair Value Of Assets That Incurred Impairments [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfRemotelyOperatedVehiclesImpairedDuringPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Number of ROVs impaired during the period </label>
<label xml:lang="en-US" xlink:label="tdw_NumberOfRemotelyOperatedVehiclesImpairedDuringPeriod_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Number Of Remotely Operated Vehicles Impaired During Period </label>
<label xml:lang="en-US" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Amount of impairment incurred </label>
<label xml:lang="en-US" xlink:label="tdw_AssetsFairValueDisclosure1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Combined fair value of assets incurring impairment after having recorded impairment charges </label>
<loc xlink:href="tdw-20171231.xsd#tdw_InventoryAndOtherNonVesselAssetsMember" xlink:type="locator" xlink:label="tdw_InventoryAndOtherNonVesselAssetsMember"/>
<label xml:lang="en-US" xlink:label="tdw_InventoryAndOtherNonVesselAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Inventory and other non-vessel assets. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_InventoryAndOtherNonVesselAssetsMember" xlink:to="tdw_InventoryAndOtherNonVesselAssetsMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_InventoryAndOtherNonVesselAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Inventory and Other Non-vessel Assets </label>
<label xml:lang="en-US" xlink:label="tdw_InventoryAndOtherNonVesselAssetsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Inventory And Other Non Vessel Assets [Member] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TransitionPeriodComparativeDataLineItems" xlink:type="locator" xlink:label="tdw_TransitionPeriodComparativeDataLineItems"/>
<label xml:lang="en-US" xlink:label="tdw_TransitionPeriodComparativeDataLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Transition period comparative data. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TransitionPeriodComparativeDataLineItems" xlink:to="tdw_TransitionPeriodComparativeDataLineItems_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_TransitionPeriodComparativeDataTable" xlink:type="locator" xlink:label="tdw_TransitionPeriodComparativeDataTable"/>
<label xml:lang="en-US" xlink:label="tdw_TransitionPeriodComparativeDataTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Transition period comparative data. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TransitionPeriodComparativeDataTable" xlink:to="tdw_TransitionPeriodComparativeDataTable_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_TransitionPeriodComparativeDataTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Transition Period Comparative Data [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_TransitionPeriodComparativeDataTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Transition Period Comparative Data [Table] </label>
<label xml:lang="en-US" xlink:label="tdw_TransitionPeriodComparativeDataLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Transition Period Comparative Data [Line Items] </label>
<label xml:lang="en-US" xlink:label="tdw_TransitionPeriodComparativeDataLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Transition Period Comparative Data [Line Items] </label>
<label xml:lang="en-US" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Operating loss </label>
<label xml:lang="en-US" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Loss before income taxes </label>
<loc xlink:href="tdw-20171231.xsd#tdw_PercentageOfCurrencyDevaluation" xlink:type="locator" xlink:label="tdw_PercentageOfCurrencyDevaluation"/>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfCurrencyDevaluation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Percentage of currency devaluation. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PercentageOfCurrencyDevaluation" xlink:to="tdw_PercentageOfCurrencyDevaluation_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_PercentageOfForeignExchangeLossRecognized" xlink:type="locator" xlink:label="tdw_PercentageOfForeignExchangeLossRecognized"/>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfForeignExchangeLossRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Percentage of foreign exchange loss recognized. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_PercentageOfForeignExchangeLossRecognized" xlink:to="tdw_PercentageOfForeignExchangeLossRecognized_lbl"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTable" xlink:type="locator" xlink:label="us-gaap_SubsequentEventTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Subsequent Event [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTable" xlink:to="us-gaap_SubsequentEventTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Event [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IntercompanyForeignCurrencyBalanceByDescriptionAxis" xlink:type="locator" xlink:label="us-gaap_IntercompanyForeignCurrencyBalanceByDescriptionAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_IntercompanyForeignCurrencyBalanceByDescriptionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Intercompany Foreign Currency Balance by Description </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IntercompanyForeignCurrencyBalanceByDescriptionAxis" xlink:to="us-gaap_IntercompanyForeignCurrencyBalanceByDescriptionAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IntercompanyForeignCurrencyBalanceByDescriptionAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Intercompany Foreign Currency Balance By Description [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_IntercompanyForeignCurrencyBalanceNameDomain" xlink:type="locator" xlink:label="us-gaap_IntercompanyForeignCurrencyBalanceNameDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_IntercompanyForeignCurrencyBalanceNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Intercompany Foreign Currency Balance, Name </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IntercompanyForeignCurrencyBalanceNameDomain" xlink:to="us-gaap_IntercompanyForeignCurrencyBalanceNameDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_IntercompanyForeignCurrencyBalanceNameDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Intercompany Foreign Currency Balance Name [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_DevaluationOfAngolanKwanzaVersusUSDollarMember" xlink:type="locator" xlink:label="tdw_DevaluationOfAngolanKwanzaVersusUSDollarMember"/>
<label xml:lang="en-US" xlink:label="tdw_DevaluationOfAngolanKwanzaVersusUSDollarMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Devaluation Of Angolan kwanza Versus US Dollar </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_DevaluationOfAngolanKwanzaVersusUSDollarMember" xlink:to="tdw_DevaluationOfAngolanKwanzaVersusUSDollarMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_DevaluationOfAngolanKwanzaVersusUSDollarMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Devaluation Of Angolan kwanza Versus US Dollar </label>
<label xml:lang="en-US" xlink:label="tdw_DevaluationOfAngolanKwanzaVersusUSDollarMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Devaluation Of Angolan Kwanza Versus U S Dollar [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:type="locator" xlink:label="us-gaap_SubsequentEventTypeAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Subsequent Event Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeAxis" xlink:to="us-gaap_SubsequentEventTypeAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Event Type [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:type="locator" xlink:label="us-gaap_SubsequentEventTypeDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Subsequent Event Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventTypeDomain" xlink:to="us-gaap_SubsequentEventTypeDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Event Type [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventMember" xlink:type="locator" xlink:label="us-gaap_SubsequentEventMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Subsequent Event </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventMember" xlink:to="us-gaap_SubsequentEventMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Event [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis" xlink:type="locator" xlink:label="us-gaap_SubsidiarySaleOfStockAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sale of Stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsidiarySaleOfStockAxis" xlink:to="us-gaap_SubsidiarySaleOfStockAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Subsidiary Sale Of Stock [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:type="locator" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Sale of Stock </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockNameOfTransactionDomain" xlink:to="us-gaap_SaleOfStockNameOfTransactionDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Sale Of Stock Name Of Transaction [Domain] </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TenderOfferMember" xlink:type="locator" xlink:label="tdw_TenderOfferMember"/>
<label xml:lang="en-US" xlink:label="tdw_TenderOfferMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Tender offer. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TenderOfferMember" xlink:to="tdw_TenderOfferMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_TenderOfferMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Offer </label>
<label xml:lang="en-US" xlink:label="tdw_TenderOfferMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Tender Offer [Member] </label>
<label xml:lang="en-US" xlink:label="us-gaap_SeniorNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Senior Secured Notes </label>
<loc xlink:href="tdw-20171231.xsd#tdw_TenderedNotesMember" xlink:type="locator" xlink:label="tdw_TenderedNotesMember"/>
<label xml:lang="en-US" xlink:label="tdw_TenderedNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Tendered notes. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_TenderedNotesMember" xlink:to="tdw_TenderedNotesMember_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_TenderedNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Tendered Notes </label>
<label xml:lang="en-US" xlink:label="tdw_TenderedNotesMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Tendered Notes [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:type="locator" xlink:label="us-gaap_SubsequentEventLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Subsequent Event [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventLineItems" xlink:to="us-gaap_SubsequentEventLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Subsequent Event [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ForeignCurrencyExchangeRateTranslation1" xlink:type="locator" xlink:label="us-gaap_ForeignCurrencyExchangeRateTranslation1"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForeignCurrencyExchangeRateTranslation1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Foreign currency exchange rate </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForeignCurrencyExchangeRateTranslation1" xlink:to="us-gaap_ForeignCurrencyExchangeRateTranslation1_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ForeignCurrencyExchangeRateTranslation1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Foreign Currency Exchange Rate Translation1 </label>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfCurrencyDevaluation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of devaluation of currency </label>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfCurrencyDevaluation_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Percentage Of Currency Devaluation </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ExpensesAndLossesReportingCurrencyDenominatedValue" xlink:type="locator" xlink:label="us-gaap_ExpensesAndLossesReportingCurrencyDenominatedValue"/>
<label xml:lang="en-US" xlink:label="us-gaap_ExpensesAndLossesReportingCurrencyDenominatedValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Estimated exchange loss </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ExpensesAndLossesReportingCurrencyDenominatedValue" xlink:to="us-gaap_ExpensesAndLossesReportingCurrencyDenominatedValue_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ExpensesAndLossesReportingCurrencyDenominatedValue_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Expenses And Losses Reporting Currency Denominated Value </label>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfForeignExchangeLossRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Percentage of foreign exchange loss recognized </label>
<label xml:lang="en-US" xlink:label="tdw_PercentageOfForeignExchangeLossRecognized_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Percentage Of Foreign Exchange Loss Recognized </label>
<label xml:lang="en-US" xlink:label="us-gaap_DebtInstrumentRepurchaseAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel"> Net proceeds realized from asset sales exceed amount </label>
<loc xlink:href="tdw-20171231.xsd#tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfPerNotes" xlink:type="locator" xlink:label="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfPerNotes"/>
<label xml:lang="en-US" xlink:label="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfPerNotes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Consideration received by holders from principal amount of per notes. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfPerNotes" xlink:to="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfPerNotes_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfNotes" xlink:type="locator" xlink:label="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfNotes"/>
<label xml:lang="en-US" xlink:label="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfNotes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> Consideration received by holders from principal amount of notes. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfNotes" xlink:to="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfNotes_lbl"/>
<loc xlink:href="tdw-20171231.xsd#tdw_CashEqualToDifferenceBetweenOfferAmountAndPrincipalAmount" xlink:type="locator" xlink:label="tdw_CashEqualToDifferenceBetweenOfferAmountAndPrincipalAmount"/>
<label xml:lang="en-US" xlink:label="tdw_CashEqualToDifferenceBetweenOfferAmountAndPrincipalAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation"> cash equal to difference between offer amount and principal amount. </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="tdw_CashEqualToDifferenceBetweenOfferAmountAndPrincipalAmount" xlink:to="tdw_CashEqualToDifferenceBetweenOfferAmountAndPrincipalAmount_lbl"/>
<label xml:lang="en-US" xlink:label="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfPerNotes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Consideration received by holders from principal amount of per notes </label>
<label xml:lang="en-US" xlink:label="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfPerNotes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Consideration Received By Holders From Principal Amount Of Per Notes </label>
<label xml:lang="en-US" xlink:label="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfNotes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Consideration received by holders from principal amount of notes </label>
<label xml:lang="en-US" xlink:label="tdw_ConsiderationReceivedByHoldersFromPrincipalAmountOfNotes_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Consideration Received By Holders From Principal Amount Of Notes </label>
<label xml:lang="en-US" xlink:label="tdw_CashEqualToDifferenceBetweenOfferAmountAndPrincipalAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Cash equal to difference between offer amount and principal amount </label>
<label xml:lang="en-US" xlink:label="tdw_CashEqualToDifferenceBetweenOfferAmountAndPrincipalAmount_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Cash Equal To Difference Between Offer Amount And Principal Amount </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAndQualifyingAccountsDisclosureTable" xlink:type="locator" xlink:label="us-gaap_ValuationAndQualifyingAccountsDisclosureTable"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAndQualifyingAccountsDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Valuation And Qualifying Accounts Disclosure [Table] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAndQualifyingAccountsDisclosureTable" xlink:to="us-gaap_ValuationAndQualifyingAccountsDisclosureTable_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAndQualifyingAccountsDisclosureTable_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Valuation And Qualifying Accounts Disclosure [Table] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesTypeAxis"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Valuation Allowances and Reserves Type </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:to="us-gaap_ValuationAllowancesAndReservesTypeAxis_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesTypeAxis_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Valuation Allowances And Reserves Type [Axis] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesDomain"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Valuation Allowances and Reserves </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowancesAndReservesDomain" xlink:to="us-gaap_ValuationAllowancesAndReservesDomain_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesDomain_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Valuation Allowances And Reserves [Domain] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsMember" xlink:type="locator" xlink:label="us-gaap_AllowanceForDoubtfulAccountsMember"/>
<label xml:lang="en-US" xlink:label="us-gaap_AllowanceForDoubtfulAccountsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Allowance for Doubtful Accounts </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsMember" xlink:to="us-gaap_AllowanceForDoubtfulAccountsMember_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AllowanceForDoubtfulAccountsMember_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Allowance For Doubtful Accounts [Member] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Valuation and Qualifying Accounts Disclosure [Line Items] </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:to="us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAndQualifyingAccountsDisclosureLineItems_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Valuation And Qualifying Accounts Disclosure [Line Items] </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesBalance"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesBalance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel"> Balance at Beginning of Period </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowancesAndReservesBalance" xlink:to="us-gaap_ValuationAllowancesAndReservesBalance_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesBalance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Valuation Allowances And Reserves Balance </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Additions at Cost </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" xlink:to="us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Valuation Allowances And Reserves Charged To Cost And Expense </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDeductions" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesDeductions"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deductions </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowancesAndReservesDeductions" xlink:to="us-gaap_ValuationAllowancesAndReservesDeductions_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesDeductions_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Valuation Allowances And Reserves Deductions </label>
<label xml:lang="en-US" xlink:label="us-gaap_ValuationAllowancesAndReservesBalance_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel"> Balance at End of Period </label>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2017/elts/us-gaap-2017-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs" xlink:type="locator" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs"/>
<label xml:lang="en-US" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel"> Deductions from allowance for doubtful accounts </label>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_lbl"/>
<label xml:lang="en-US" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label"> Allowance For Doubtful Accounts Receivable Write Offs </label>
</labelLink>
</linkbase>

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