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Castor Maritime Inc. – ‘6-K’ for 6/30/22 – ‘EX-101.SCH’

On:  Tuesday, 8/9/22, at 9:16am ET   ·   For:  6/30/22   ·   Accession #:  1140361-22-28839   ·   File #:  1-38802

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

 8/09/22  Castor Maritime Inc.              6-K         6/30/22   83:7.4M                                   Broadridge Fin’l So… Inc

Current, Quarterly or Annual Report by a Foreign Issuer   —   Form 6-K   —   SEA’34

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 6-K         Current, Quarterly or Annual Report by a Foreign    HTML     32K 
                Issuer                                                           
 2: EX-99.1     Miscellaneous Exhibit                               HTML   1.19M 
 3: EX-99.2     Miscellaneous Exhibit                               HTML    211K 
 9: R1          Document and Entity Information                     HTML     33K 
10: R2          Unaudited Interim Consolidated Balance Sheets       HTML    146K 
11: R3          Unaudited Interim Consolidated Balance Sheets       HTML     46K 
                (Parenthetical)                                                  
12: R4          Unaudited Interim Condensed Consolidated            HTML    107K 
                Statements of Comprehensive Income                               
13: R5          Unaudited Interim Condensed Consolidated            HTML     34K 
                Statements of Comprehensive Income (Parenthetical)               
14: R6          Unaudited Interim Consolidated Statements of        HTML     59K 
                Shareholders' Equity                                             
15: R7          Unaudited Interim Consolidated Statements of Cash   HTML    122K 
                Flows                                                            
16: R8          Basis of Presentation and General information       HTML     81K 
17: R9          Significant Accounting Policies and Recent          HTML     31K 
                Accounting Pronouncements                                        
18: R10         Transactions with Related Parties                   HTML     66K 
19: R11         Deferred charges, net                               HTML     30K 
20: R12         Vessels, net/ Advances for vessel acquisition/      HTML     46K 
                Vessel held for sale                                             
21: R13         Long-Term Debt                                      HTML     77K 
22: R14         Equity Capital Structure                            HTML     34K 
23: R15         Financial Instruments and Fair Value Disclosures    HTML     33K 
24: R16         Commitments and contingencies                       HTML     34K 
25: R17         Earnings Per Share                                  HTML     39K 
26: R18         Vessel Revenues                                     HTML     39K 
27: R19         Vessel Operating and Voyage Expenses                HTML     48K 
28: R20         General and Administrative Expenses                 HTML     34K 
29: R21         Interest and Finance Costs                          HTML     34K 
30: R22         Segment Information                                 HTML    124K 
31: R23         Subsequent Events                                   HTML     34K 
32: R24         Basis of Presentation and General information       HTML     28K 
                (Policies)                                                       
33: R25         Significant Accounting Policies and Recent          HTML     30K 
                Accounting Pronouncements (Policies)                             
34: R26         Basis of Presentation and General Information       HTML     76K 
                (Tables)                                                         
35: R27         Transactions with Related Parties (Tables)          HTML     46K 
36: R28         Deferred charges, net (Tables)                      HTML     29K 
37: R29         Vessels, net/ Advances for vessel acquisition/      HTML     42K 
                Vessel held for sale (Tables)                                    
38: R30         Long-Term Debt (Tables)                             HTML     63K 
39: R31         Commitments and contingencies (Tables)              HTML     28K 
40: R32         Earnings Per Share (Tables)                         HTML     36K 
41: R33         Vessel Revenues (Tables)                            HTML     33K 
42: R34         Vessel Operating and Voyage Expenses (Tables)       HTML     49K 
43: R35         General and Administrative Expenses (Tables)        HTML     33K 
44: R36         Interest and Finance Costs (Tables)                 HTML     33K 
45: R37         Segment Information (Tables)                        HTML    123K 
46: R38         Basis of Presentation and General information,      HTML     43K 
                General Information (Details)                                    
47: R39         Basis of Presentation and General information,      HTML    199K 
                Vessel Owning Subsidiaries (Details)                             
48: R40         Transactions with Related Parties, Summary          HTML     66K 
                (Details)                                                        
49: R41         Transactions with Related Parties, Pavimar          HTML     56K 
                (Details)                                                        
50: R42         Transactions with Related Parties, Thalassa         HTML     50K 
                (Details)                                                        
51: R43         Transactions with Related Parties, Castor Ships     HTML     54K 
                (Details)                                                        
52: R44         Transactions with Related Parties, Vessel           HTML     28K 
                Acquisition (Details)                                            
53: R45         Deferred charges, net (Details)                     HTML     31K 
54: R46         Vessels, net/ Advances for vessel acquisition/      HTML     50K 
                Vessel held for sale, Net Book Value (Details)                   
55: R47         Vessels, net/ Advances for vessel acquisition/      HTML     38K 
                Vessel held for sale, Vessel Acquisitions and                    
                other Capital Expenditures (Details)                             
56: R48         Vessels, net/ Advances for vessel acquisition/      HTML     27K 
                Vessel held for sale, Advances for vessel                        
                acquisition (Details)                                            
57: R49         Vessels, net/ Advances for vessel acquisition/      HTML     35K 
                Vessel held for sale, Vessel held for sale                       
                (Details)                                                        
58: R50         Long-Term Debt, Long-Term Debt Including Related    HTML     74K 
                Party Debt (Details)                                             
59: R51         Long-Term Debt, $11.0 Million Term Loan Facility    HTML     28K 
                (Details)                                                        
60: R52         Long-Term Debt, $4.5 Million Term Loan Facility     HTML     28K 
                (Details)                                                        
61: R53         Long-Term Debt, $15.29 Million Term Loan Facility   HTML     28K 
                (Details)                                                        
62: R54         Long-Term Debt, $18.0 Million Term Loan Facility    HTML     28K 
                (Details)                                                        
63: R55         Long-Term Debt, $40.75 Million Term Loan Facility   HTML     28K 
                (Details)                                                        
64: R56         Long-Term Debt, $23.15 Million Term Loan Facility   HTML     28K 
                (Details)                                                        
65: R57         Long-Term Debt, $55.0 Million Term Loan Facility    HTML     54K 
                (Details)                                                        
66: R58         Long-Term Debt, Annual Principal Payments           HTML     75K 
                (Details)                                                        
67: R59         Equity Capital Structure, Capital Stock (Details)   HTML     31K 
68: R60         Equity Capital Structure, At-the-Market Common      HTML     36K 
                Stock Offering (Details)                                         
69: R61         Equity Capital Structure, Reverse Stock Split       HTML     25K 
                (Details)                                                        
70: R62         Commitments and contingencies (Details)             HTML     54K 
71: R63         Earnings Per Share (Details)                        HTML     66K 
72: R64         Vessel Revenues (Details)                           HTML     44K 
73: R65         Vessel Operating and Voyage Expenses (Details)      HTML     49K 
74: R66         General and Administrative Expenses (Details)       HTML     33K 
75: R67         Interest and Finance Costs (Details)                HTML     35K 
76: R68         Segment Information, Information about Company's    HTML     91K 
                Reportable Segments (Details)                                    
77: R69         Segment Information, Reconciliation of Total        HTML     49K 
                Segment Assets to Total Assets (Details)                         
78: R70         Subsequent Events (Details)                         HTML     61K 
81: XML         IDEA XML File -- Filing Summary                      XML    154K 
79: XML         XBRL Instance -- brhc10040533_ex99-1_htm             XML   1.69M 
80: EXCEL       IDEA Workbook of Financial Reports                  XLSX    136K 
 5: EX-101.CAL  XBRL Calculations -- ctrm-20220630_cal               XML    189K 
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 7: EX-101.LAB  XBRL Labels -- ctrm-20220630_lab                     XML   1.89M 
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82: JSON        XBRL Instance as JSON Data -- MetaLinks              350±   528K 
83: ZIP         XBRL Zipped Folder -- 0001140361-22-028839-xbrl      Zip    280K

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<link:definition> 081400 - Disclosure - Interest and Finance Costs (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/SegmentInformationTables" id="SegmentInformationTables"> <!-- Parent Role: Segment Information -->
<link:definition> 081500 - Disclosure - Segment Information (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/BasisOfPresentationAndGeneralInformationGeneralInformationDetails" id="BasisOfPresentationAndGeneralInformationGeneralInformationDetails"> <!-- Parent Role: Basis of Presentation and General information -->
<link:definition> 090100 - Disclosure - Basis of Presentation and General information, General Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/BasisOfPresentationAndGeneralInformationVesselOwningSubsidiariesDetails" id="BasisOfPresentationAndGeneralInformationVesselOwningSubsidiariesDetails"> <!-- Parent Role: Basis of Presentation and General information -->
<link:definition> 090102 - Disclosure - Basis of Presentation and General information, Vessel Owning Subsidiaries (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/TransactionsWithRelatedPartiesSummaryDetails" id="TransactionsWithRelatedPartiesSummaryDetails"> <!-- Parent Role: Transactions with Related Parties -->
<link:definition> 090300 - Disclosure - Transactions with Related Parties, Summary (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/TransactionsWithRelatedPartiesPavimarDetails" id="TransactionsWithRelatedPartiesPavimarDetails"> <!-- Parent Role: Transactions with Related Parties -->
<link:definition> 090302 - Disclosure - Transactions with Related Parties, Pavimar (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/TransactionsWithRelatedPartiesThalassaDetails" id="TransactionsWithRelatedPartiesThalassaDetails"> <!-- Parent Role: Transactions with Related Parties -->
<link:definition> 090304 - Disclosure - Transactions with Related Parties, Thalassa (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/TransactionsWithRelatedPartiesCastorShipsDetails" id="TransactionsWithRelatedPartiesCastorShipsDetails"> <!-- Parent Role: Transactions with Related Parties -->
<link:definition> 090306 - Disclosure - Transactions with Related Parties, Castor Ships (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/TransactionsWithRelatedPartiesVesselAcquisitionDetails" id="TransactionsWithRelatedPartiesVesselAcquisitionDetails"> <!-- Parent Role: Transactions with Related Parties -->
<link:definition> 090308 - Disclosure - Transactions with Related Parties, Vessel Acquisition (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/DeferredChargesNetDetails" id="DeferredChargesNetDetails"> <!-- Parent Role: Deferred charges, net -->
<link:definition> 090400 - Disclosure - Deferred charges, net (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/VesselsNetAdvancesForVesselAcquisitionVesselHeldForSaleNetBookValueDetails" id="VesselsNetAdvancesForVesselAcquisitionVesselHeldForSaleNetBookValueDetails"> <!-- Parent Role: Vessels, net/ Advances for vessel acquisition/ Vessel held for sale -->
<link:definition> 090500 - Disclosure - Vessels, net/ Advances for vessel acquisition/ Vessel held for sale, Net Book Value (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/VesselsNetAdvancesForVesselAcquisitionVesselHeldForSaleVesselAcquisitionsAndOtherCapitalExpendituresDetails" id="VesselsNetAdvancesForVesselAcquisitionVesselHeldForSaleVesselAcquisitionsAndOtherCapitalExpendituresDetails"> <!-- Parent Role: Vessels, net/ Advances for vessel acquisition/ Vessel held for sale -->
<link:definition> 090502 - Disclosure - Vessels, net/ Advances for vessel acquisition/ Vessel held for sale, Vessel Acquisitions and other Capital Expenditures (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/VesselsNetAdvancesForVesselAcquisitionVesselHeldForSaleAdvancesForVesselAcquisitionDetails" id="VesselsNetAdvancesForVesselAcquisitionVesselHeldForSaleAdvancesForVesselAcquisitionDetails"> <!-- Parent Role: Vessels, net/ Advances for vessel acquisition/ Vessel held for sale -->
<link:definition> 090504 - Disclosure - Vessels, net/ Advances for vessel acquisition/ Vessel held for sale, Advances for vessel acquisition (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/VesselsNetAdvancesForVesselAcquisitionVesselHeldForSaleVesselHeldForSaleDetails" id="VesselsNetAdvancesForVesselAcquisitionVesselHeldForSaleVesselHeldForSaleDetails"> <!-- Parent Role: Vessels, net/ Advances for vessel acquisition/ Vessel held for sale -->
<link:definition> 090506 - Disclosure - Vessels, net/ Advances for vessel acquisition/ Vessel held for sale, Vessel held for sale (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/LongtermDebtLongtermDebtIncludingRelatedPartyDebtDetails" id="LongtermDebtLongtermDebtIncludingRelatedPartyDebtDetails"> <!-- Parent Role: Long-Term Debt -->
<link:definition> 090600 - Disclosure - Long-Term Debt, Long-Term Debt Including Related Party Debt (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/LongtermDebtLongtermDebtIncludingRelatedPartyDebtDetailsCalc2" id="LongtermDebtLongtermDebtIncludingRelatedPartyDebtDetailsCalc2"> <!-- Parent Role: Long-Term Debt, Long-Term Debt Including Related Party Debt (Details) -->
<link:definition> 090602 - Disclosure - Long-Term Debt, Long-Term Debt Including Related Party Debt (Details) Calc 2 </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/LongtermDebt110MillionTermLoanFacilityDetails" id="LongtermDebt110MillionTermLoanFacilityDetails"> <!-- Parent Role: Long-Term Debt -->
<link:definition> 090602 - Disclosure - Long-Term Debt, $11.0 Million Term Loan Facility (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/LongtermDebt45MillionTermLoanFacilityDetails" id="LongtermDebt45MillionTermLoanFacilityDetails"> <!-- Parent Role: Long-Term Debt -->
<link:definition> 090604 - Disclosure - Long-Term Debt, $4.5 Million Term Loan Facility (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/LongtermDebt1529MillionTermLoanFacilityDetails" id="LongtermDebt1529MillionTermLoanFacilityDetails"> <!-- Parent Role: Long-Term Debt -->
<link:definition> 090606 - Disclosure - Long-Term Debt, $15.29 Million Term Loan Facility (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/LongtermDebt180MillionTermLoanFacilityDetails" id="LongtermDebt180MillionTermLoanFacilityDetails"> <!-- Parent Role: Long-Term Debt -->
<link:definition> 090608 - Disclosure - Long-Term Debt, $18.0 Million Term Loan Facility (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/LongtermDebt4075MillionTermLoanFacilityDetails" id="LongtermDebt4075MillionTermLoanFacilityDetails"> <!-- Parent Role: Long-Term Debt -->
<link:definition> 090610 - Disclosure - Long-Term Debt, $40.75 Million Term Loan Facility (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/LongtermDebt2315MillionTermLoanFacilityDetails" id="LongtermDebt2315MillionTermLoanFacilityDetails"> <!-- Parent Role: Long-Term Debt -->
<link:definition> 090612 - Disclosure - Long-Term Debt, $23.15 Million Term Loan Facility (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/LongtermDebt550MillionTermLoanFacilityDetails" id="LongtermDebt550MillionTermLoanFacilityDetails"> <!-- Parent Role: Long-Term Debt -->
<link:definition> 090614 - Disclosure - Long-Term Debt, $55.0 Million Term Loan Facility (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/LongtermDebtAnnualPrincipalPaymentsDetails" id="LongtermDebtAnnualPrincipalPaymentsDetails"> <!-- Parent Role: Long-Term Debt -->
<link:definition> 090616 - Disclosure - Long-Term Debt, Annual Principal Payments (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/EquityCapitalStructureCapitalStockDetails" id="EquityCapitalStructureCapitalStockDetails"> <!-- Parent Role: Equity Capital Structure -->
<link:definition> 090700 - Disclosure - Equity Capital Structure, Capital Stock (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/EquityCapitalStructureAtthemarketCommonStockOfferingDetails" id="EquityCapitalStructureAtthemarketCommonStockOfferingDetails"> <!-- Parent Role: Equity Capital Structure -->
<link:definition> 090702 - Disclosure - Equity Capital Structure, At-the-Market Common Stock Offering (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/EquityCapitalStructureReverseStockSplitDetails" id="EquityCapitalStructureReverseStockSplitDetails"> <!-- Parent Role: Equity Capital Structure -->
<link:definition> 090704 - Disclosure - Equity Capital Structure, Reverse Stock Split (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/CommitmentsAndContingenciesDetails" id="CommitmentsAndContingenciesDetails"> <!-- Parent Role: Commitments and contingencies -->
<link:definition> 090900 - Disclosure - Commitments and contingencies (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/EarningsPerShareDetails" id="EarningsPerShareDetails"> <!-- Parent Role: Earnings Per Share -->
<link:definition> 091000 - Disclosure - Earnings Per Share (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/VesselRevenuesDetails" id="VesselRevenuesDetails"> <!-- Parent Role: Vessel Revenues -->
<link:definition> 091100 - Disclosure - Vessel Revenues (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/VesselOperatingAndVoyageExpensesDetails" id="VesselOperatingAndVoyageExpensesDetails"> <!-- Parent Role: Vessel Operating and Voyage Expenses -->
<link:definition> 091200 - Disclosure - Vessel Operating and Voyage Expenses (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/GeneralAndAdministrativeExpensesDetails" id="GeneralAndAdministrativeExpensesDetails"> <!-- Parent Role: General and Administrative Expenses -->
<link:definition> 091300 - Disclosure - General and Administrative Expenses (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/InterestAndFinanceCostsDetails" id="InterestAndFinanceCostsDetails"> <!-- Parent Role: Interest and Finance Costs -->
<link:definition> 091400 - Disclosure - Interest and Finance Costs (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/SegmentInformationInformationAboutCompanySReportableSegmentsDetails" id="SegmentInformationInformationAboutCompanySReportableSegmentsDetails"> <!-- Parent Role: Segment Information -->
<link:definition> 091500 - Disclosure - Segment Information, Information about Company's Reportable Segments (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/SegmentInformationReconciliationOfTotalSegmentAssetsToTotalAssetsDetails" id="SegmentInformationReconciliationOfTotalSegmentAssetsToTotalAssetsDetails"> <!-- Parent Role: Segment Information -->
<link:definition> 091502 - Disclosure - Segment Information, Reconciliation of Total Segment Assets to Total Assets (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
<link:roleType roleURI="http://castormaritime.com/role/SubsequentEventsDetails" id="SubsequentEventsDetails"> <!-- Parent Role: Subsequent Events -->
<link:definition> 091600 - Disclosure - Subsequent Events (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
</link:roleType>
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<xs:import namespace="http://fasb.org/us-gaap/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/dei/2022" schemaLocation="https://xbrl.sec.gov/dei/2022/dei-2022.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/country/2022" schemaLocation="https://xbrl.sec.gov/country/2022/country-2022.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/currency/2022" schemaLocation="https://xbrl.sec.gov/currency/2022/currency-2022.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/exch/2022" schemaLocation="https://xbrl.sec.gov/exch/2022/exch-2022.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/naics/2022" schemaLocation="https://xbrl.sec.gov/naics/2022/naics-2022.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/sic/2022" schemaLocation="https://xbrl.sec.gov/sic/2022/sic-2022.xsd"/>
<xs:import namespace="http://www.xbrl.org/2009/role/negated" schemaLocation="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd"/>
<xs:import namespace="http://www.xbrl.org/2009/role/net" schemaLocation="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/stpr/2022" schemaLocation="https://xbrl.sec.gov/stpr/2022/stpr-2022.xsd"/>
<xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
<xs:import namespace="http://www.xbrl.org/2004/ref" schemaLocation="http://www.xbrl.org/2004/ref-2004-08-10.xsd"/>
<xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
<xs:import namespace="http://fasb.org/us-types/2022" schemaLocation="https://xbrl.fasb.org/us-gaap/2022/elts/us-types-2022.xsd"/>
<xs:import namespace="http://www.xbrl.org/2009/arcrole/fact-explanatoryFact" schemaLocation="http://www.xbrl.org/lrr/arcrole/factExplanatory-2009-12-16.xsd"/>
<xs:import namespace="http://fasb.org/srt/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd"/>
<xs:import namespace="http://fasb.org/srt-types/2022" schemaLocation="https://xbrl.fasb.org/srt/2022/elts/srt-types-2022.xsd"/>
<xs:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
<xs:element name="OrganizationTable" id="ctrm_OrganizationTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicPerseusMember" id="ctrm_MagicPerseusMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicArgoMember" id="ctrm_MagicArgoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicNebulaMember" id="ctrm_MagicNebulaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="WonderPolarisMember" id="ctrm_WonderPolarisMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicTwilightMember" id="ctrm_MagicTwilightMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicMoonMember" id="ctrm_MagicMoonMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicRainbowMember" id="ctrm_MagicRainbowMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="WonderMimosaMember" id="ctrm_WonderMimosaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
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<xs:element name="WonderArcturusMember" id="ctrm_WonderArcturusMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
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<xs:element name="WonderBellatrixMember" id="ctrm_WonderBellatrixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
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<xs:element name="OrganizationLineItems" id="ctrm_OrganizationLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SubsidiariesInConsolidationAbstract" id="ctrm_SubsidiariesInConsolidationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
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<xs:element name="VesselDeliveryDateMonthAndYear" id="ctrm_VesselDeliveryDateMonthAndYear" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="MagicVelaMember" id="ctrm_MagicVelaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicEclipseMember" id="ctrm_MagicEclipseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicMarsMember" id="ctrm_MagicMarsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicPhoenixMember" id="ctrm_MagicPhoenixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicOrionMember" id="ctrm_MagicOrionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicHorizonMember" id="ctrm_MagicHorizonMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicNovaMember" id="ctrm_MagicNovaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MagicStarlightMember" id="ctrm_MagicStarlightMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MickeyShippingCoMember" id="ctrm_MickeyShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SnoopyShippingCoMember" id="ctrm_SnoopyShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="ColossusShippingCoMember" id="ctrm_ColossusShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="CinderellaShippingCoMember" id="ctrm_CinderellaShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="StewieShippingCoMember" id="ctrm_StewieShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="VisionShippingCoMember" id="ctrm_VisionShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SpetsesShippingCoMember" id="ctrm_SpetsesShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="XavierShippingCoMember" id="ctrm_XavierShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="DraxShippingCoMember" id="ctrm_DraxShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="GamoraShippingCoMember" id="ctrm_GamoraShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="GarfieldShippingCoMember" id="ctrm_GarfieldShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="PikachuShippingCoMember" id="ctrm_PikachuShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="PocahontasShippingCoMember" id="ctrm_PocahontasShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="LionoShippingCoMember" id="ctrm_LionoShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SuperMarioShippingCoMember" id="ctrm_SuperMarioShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="BistroMaritimeCoMember" id="ctrm_BistroMaritimeCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="JumaruShippingCoMember" id="ctrm_JumaruShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="ElektraShippingCoMember" id="ctrm_ElektraShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="LuffyShippingCoMember" id="ctrm_LuffyShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="MulanShippingCoMember" id="ctrm_MulanShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="PumbaShippingCoMember" id="ctrm_PumbaShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="AsterixShippingCoMember" id="ctrm_AsterixShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SongokuShippingCoMember" id="ctrm_SongokuShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="RocketShippingCoMember" id="ctrm_RocketShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="HawkeyeShippingCoMember" id="ctrm_HawkeyeShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="PropertyPlantAndEquipmentSalesPrice" id="ctrm_PropertyPlantAndEquipmentSalesPrice" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit"/>
<xs:element name="WonderVegaMember" id="ctrm_WonderVegaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="StarlordShippingCoMember" id="ctrm_StarlordShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="WonderAviorMember" id="ctrm_WonderAviorMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="JohnnyBravoShippingCoMember" id="ctrm_JohnnyBravoShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="CastorMaritimeScrCorpMember" id="ctrm_CastorMaritimeScrCorpMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="WonderSiriusMember" id="ctrm_WonderSiriusMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="WonderMusicaMember" id="ctrm_WonderMusicaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="VesselYearBuilt" id="ctrm_VesselYearBuilt" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="WonderFormosaMember" id="ctrm_WonderFormosaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="KabamaruShippingCoMember" id="ctrm_KabamaruShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="BagheeraShippingCoMember" id="ctrm_BagheeraShippingCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="VesselDeadWeightTonnage" id="ctrm_VesselDeadWeightTonnage" type="dtr-types:massItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="MagicThunderMember" id="ctrm_MagicThunderMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="ClassAWarrantMember" id="ctrm_ClassAWarrantMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="PrivatePlacementWarrantsMember" id="ctrm_PrivatePlacementWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="ParValueOfSharesIssuedMember" id="ctrm_ParValueOfSharesIssuedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="StockIssuedDuringPeriodSharesExerciseOfWarrants" id="ctrm_StockIssuedDuringPeriodSharesExerciseOfWarrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="StockIssuedDuringPeriodSharesNewIssuesAtTheMarketOffering" id="ctrm_StockIssuedDuringPeriodSharesNewIssuesAtTheMarketOffering" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="StockIssuedDuringPeriodValueExerciseOfWarrants" id="ctrm_StockIssuedDuringPeriodValueExerciseOfWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit"/>
<xs:element name="StockIssuedDuringPeriodValueNewIssuesRegisteredDirectOfferings" id="ctrm_StockIssuedDuringPeriodValueNewIssuesRegisteredDirectOfferings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit"/>
<xs:element name="StockIssuedDuringPeriodValueNewIssuesAtTheMarketOffering" id="ctrm_StockIssuedDuringPeriodValueNewIssuesAtTheMarketOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit"/>
<xs:element name="StockIssuedDuringPeriodSharesNewIssuesRegisteredDirectOfferings" id="ctrm_StockIssuedDuringPeriodSharesNewIssuesRegisteredDirectOfferings" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="VoyageExpenses" id="ctrm_VoyageExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="RelatedPartyTransactionManagementFees" id="ctrm_RelatedPartyTransactionManagementFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="TimeCharterMember" id="ctrm_TimeCharterMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="DryBulkSegmentMember" id="ctrm_DryBulkSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="AframaxLr2TankerSegmentMember" id="ctrm_AframaxLr2TankerSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="PoolAgreementsMember" id="ctrm_PoolAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="VoyageCharterMember" id="ctrm_VoyageCharterMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="HandysizeTankerSegmentMember" id="ctrm_HandysizeTankerSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="VoyageExpensesRelatedParty" id="ctrm_VoyageExpensesRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="AddressCommissions" id="ctrm_AddressCommissions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="SeniorSecuredTeamLoanFacilityChaileaseInternationalFinancialServicesSingaporePteLtdMember" id="ctrm_SeniorSecuredTeamLoanFacilityChaileaseInternationalFinancialServicesSingaporePteLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SeniorSecuredTeamLoanFacilityDeutscheBankAgMember" id="ctrm_SeniorSecuredTeamLoanFacilityDeutscheBankAgMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SeniorSecuredTeamLoanFacilityHamburgCommercialBankAgJanuary2021Member" id="ctrm_SeniorSecuredTeamLoanFacilityHamburgCommercialBankAgJanuary2021Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SeniorSecuredTeamLoanFacilityAlphaBankSA2019Member" id="ctrm_SeniorSecuredTeamLoanFacilityAlphaBankSA2019Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SeniorSecuredTeamLoanFacilityAlphaBankSA2021Member" id="ctrm_SeniorSecuredTeamLoanFacilityAlphaBankSA2021Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SeniorSecuredTeamLoanFacilityChaileaseInternationalInternationalFinancialServicesCoLtdMember" id="ctrm_SeniorSecuredTeamLoanFacilityChaileaseInternationalInternationalFinancialServicesCoLtdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SeniorSecuredTeamLoanFacilityHamburgCommercialBankAgJuly2021Member" id="ctrm_SeniorSecuredTeamLoanFacilityHamburgCommercialBankAgJuly2021Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="LongTermDebtGrossNoncurrent" id="ctrm_LongTermDebtGrossNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit"/>
<xs:element name="LongTermDebtGrossCurrent" id="ctrm_LongTermDebtGrossCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit"/>
<xs:element name="NumberOfInstallationsExpectedToBeConcludedYearTwo" id="ctrm_NumberOfInstallationsExpectedToBeConcludedYearTwo" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="NumberOfVesselsOnWhichBallastWaterManagementSystemsWillBeInstalled" id="ctrm_NumberOfVesselsOnWhichBallastWaterManagementSystemsWillBeInstalled" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="NumberOfVesselsOnWhichBallastWaterManagementSystemsWereContractedToBeInstalled" id="ctrm_NumberOfVesselsOnWhichBallastWaterManagementSystemsWereContractedToBeInstalled" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="NumberOfVesselsOnWhichBallastWaterTreatmentSystemsWereCompletedAndPutIntoUse" id="ctrm_NumberOfVesselsOnWhichBallastWaterTreatmentSystemsWereCompletedAndPutIntoUse" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="NumberOfInstallationsExpectedToBeConcludedRemainderOfFiscalYear" id="ctrm_NumberOfInstallationsExpectedToBeConcludedRemainderOfFiscalYear" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="NumberOfVesselsOnWhichBallastWaterManagementSystemsWereInProcessOfBeingInstalled" id="ctrm_NumberOfVesselsOnWhichBallastWaterManagementSystemsWereInProcessOfBeingInstalled" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="GeneralAndAdministrativeExpensesTextBlock" id="ctrm_GeneralAndAdministrativeExpensesTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="AuditFees" id="ctrm_AuditFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="ProfessionalFeesOther" id="ctrm_ProfessionalFeesOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="AdvancesForVesselAcquisitions" id="ctrm_AdvancesForVesselAcquisitions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit"/>
<xs:element name="CastorShipsSAMember" id="ctrm_CastorShipsSAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="RelatedPartyTransactionQuarterlyManagementFee" id="ctrm_RelatedPartyTransactionQuarterlyManagementFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="RelatedPartyTransactionFixedDailyFee" id="ctrm_RelatedPartyTransactionFixedDailyFee" type="srt-types:perUnitItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="RelatedPartyTransactionCommissions" id="ctrm_RelatedPartyTransactionCommissions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="RelatedPartyTransactionSaleAndPurchaseCommission" id="ctrm_RelatedPartyTransactionSaleAndPurchaseCommission" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="RelatedPartyTransactionCommissionRateOnEachVesselSaleAndPurchaseTransaction" id="ctrm_RelatedPartyTransactionCommissionRateOnEachVesselSaleAndPurchaseTransaction" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="RelatedPartyTransactionCommissionRate" id="ctrm_RelatedPartyTransactionCommissionRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="ManagementAgreementsMember" id="ctrm_ManagementAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="CommercialShipmanagementAgreementsMember" id="ctrm_CommercialShipmanagementAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="VoyageExpensesMember" id="ctrm_VoyageExpensesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="ManagementFeesToRelatedPartyMember" id="ctrm_ManagementFeesToRelatedPartyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="TankerMember" id="ctrm_TankerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="NumberOfVesselsUnderTechnicalManagement" id="ctrm_NumberOfVesselsUnderTechnicalManagement" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="NumberOfVesselsUnderOperationalManagement" id="ctrm_NumberOfVesselsUnderOperationalManagement" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="PavimarSAMember" id="ctrm_PavimarSAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="WorkingCapitalGuaranteeDeposits" id="ctrm_WorkingCapitalGuaranteeDeposits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit"/>
<xs:element name="DryBulkCarrierMember" id="ctrm_DryBulkCarrierMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="TechnicalShipmanagementAgreementsMember" id="ctrm_TechnicalShipmanagementAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="WorkingCapitalAdvancesMember" id="ctrm_WorkingCapitalAdvancesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="SubcontractedManagementAgreementsMember" id="ctrm_SubcontractedManagementAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="VesselManagementAgreementsMember" id="ctrm_VesselManagementAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="ThirdPartyInWhichFamilyMemberOfPetrosPanagiotidisHadMinorityInterestMember" id="ctrm_ThirdPartyInWhichFamilyMemberOfPetrosPanagiotidisHadMinorityInterestMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="DebtInstrumentTermOfExtension" id="ctrm_DebtInstrumentTermOfExtension" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="AccruedInterestRelatedPartiesCurrent" id="ctrm_AccruedInterestRelatedPartiesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit"/>
<xs:element name="ThalassaInvestmentCoSAMember" id="ctrm_ThalassaInvestmentCoSAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="TermLoanFacilityMember" id="ctrm_TermLoanFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="CommercialManagementServicesMember" id="ctrm_CommercialManagementServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="VesselOperatingAndVoyageExpensesAbstract" id="ctrm_VesselOperatingAndVoyageExpensesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="VesselOperatingAndVoyageExpensesTextBlock" id="ctrm_VesselOperatingAndVoyageExpensesTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="VoyageExpenseAbstract" id="ctrm_VoyageExpenseAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="LubricantExpenses" id="ctrm_LubricantExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="VesselRepairAndMaintenanceExpenses" id="ctrm_VesselRepairAndMaintenanceExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="PortAndOtherExpenses" id="ctrm_PortAndOtherExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="BunkersConsumption" id="ctrm_BunkersConsumption" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="BrokerageCommissionsRelatedParty" id="ctrm_BrokerageCommissionsRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="LossGainOnBunkerFuel" id="ctrm_LossGainOnBunkerFuel" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="BrokerageCommissions" id="ctrm_BrokerageCommissions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="GeneralAndAdministrativeExpensesTableTextBlock" id="ctrm_GeneralAndAdministrativeExpensesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="UnpaidDeferredDryDockCosts" id="ctrm_UnpaidDeferredDryDockCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit"/>
<xs:element name="UnpaidAdvancesForVesselAcquisitions" id="ctrm_UnpaidAdvancesForVesselAcquisitions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit"/>
<xs:element name="PaymentsOfAdvancesForVesselAcquisitions" id="ctrm_PaymentsOfAdvancesForVesselAcquisitions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit"/>
<xs:element name="DepreciationAndAmortizationOfDeferredDryDockingCosts" id="ctrm_DepreciationAndAmortizationOfDeferredDryDockingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="IncreaseDecreaseInOtherDeferredCharges" id="ctrm_IncreaseDecreaseInOtherDeferredCharges" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit"/>
<xs:element name="StockIssuanceCostsIncurredButNotYetPaid" id="ctrm_StockIssuanceCostsIncurredButNotYetPaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit"/>
<xs:element name="NonVesselOwningSubsidiariesTableTextBlock" id="ctrm_NonVesselOwningSubsidiariesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="VesselOwningSubsidiariesTableTextBlock" id="ctrm_VesselOwningSubsidiariesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="ConsolidatedSubsidiariesFormedToAcquireVesselsTableTextBlock" id="ctrm_ConsolidatedSubsidiariesFormedToAcquireVesselsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="BasisOfPresentationAndOrganizationAbstract" id="ctrm_BasisOfPresentationAndOrganizationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="PercentageOfSharesHeld" id="ctrm_PercentageOfSharesHeld" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="NumberOfVessels" id="ctrm_NumberOfVessels" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="Mr1Member" id="ctrm_Mr1Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="CapesizeVesselMember" id="ctrm_CapesizeVesselMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="AframaxLr2TankerMember" id="ctrm_AframaxLr2TankerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="PanamaxVesselMember" id="ctrm_PanamaxVesselMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="KamsarmaxVesselMember" id="ctrm_KamsarmaxVesselMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="AframaxMember" id="ctrm_AframaxMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="TimeCharterContractTerm" id="ctrm_TimeCharterContractTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="RelatedPartyTransactionTermOfAgreement" id="ctrm_RelatedPartyTransactionTermOfAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="RelatedPartyTransactionRenewalTermOfAgreement" id="ctrm_RelatedPartyTransactionRenewalTermOfAgreement" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="RelatedPartyTransactionManagementTerminationFeeMultiplier" id="ctrm_RelatedPartyTransactionManagementTerminationFeeMultiplier" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="RelatedPartyTransactionManagementRecoveryFeeMultiplier" id="ctrm_RelatedPartyTransactionManagementRecoveryFeeMultiplier" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="MinimumLiquidityDeposits" id="ctrm_MinimumLiquidityDeposits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit"/>
<xs:element name="RetentionDeposits" id="ctrm_RetentionDeposits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit"/>
<xs:element name="DryDockingReserveAccounts" id="ctrm_DryDockingReserveAccounts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit"/>
<xs:element name="ThirdPartyAndRelatedPartyDebtMember" id="ctrm_ThirdPartyAndRelatedPartyDebtMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="CapitalizedContractCostAdditions" id="ctrm_CapitalizedContractCostAdditions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="CapitalizedContractCostInsuranceClaimRecognized" id="ctrm_CapitalizedContractCostInsuranceClaimRecognized" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit"/>
<xs:element name="AdvancesTransferToVesselsNet" id="ctrm_AdvancesTransferToVesselsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit"/>
<xs:element name="NumberOfVesselsAcquired" id="ctrm_NumberOfVesselsAcquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="NumberOfVesselsMortgagedAsCollateral" id="ctrm_NumberOfVesselsMortgagedAsCollateral" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="VesselsMortgagedAsCollateralMember" id="ctrm_VesselsMortgagedAsCollateralMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="ScheduleOfAdvancesForVesselsAcquisitionsTableTextBlock" id="ctrm_ScheduleOfAdvancesForVesselsAcquisitionsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="VesselsMember" id="ctrm_VesselsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="PropertyPlantAndEquipmentTransferToHeldForSale" id="ctrm_PropertyPlantAndEquipmentTransferToHeldForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit"/>
<xs:element name="PropertyPlantAndEquipmentNetTransferToHeldForSale" id="ctrm_PropertyPlantAndEquipmentNetTransferToHeldForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit"/>
<xs:element name="ReverseStockSplitAbstract" id="ctrm_ReverseStockSplitAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration"/>
<xs:element name="CapitalStockParOrStatedValuePerShare" id="ctrm_CapitalStockParOrStatedValuePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="CapitalStockSharesAuthorized" id="ctrm_CapitalStockSharesAuthorized" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
<xs:element name="CommonStockThatCanBeSoldValue" id="ctrm_CommonStockThatCanBeSoldValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit"/>
<xs:element name="VesselOperatingExpensesTableTextBlock" id="ctrm_VesselOperatingExpensesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="VoyageExpensesTableTextBlock" id="ctrm_VoyageExpensesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="DebtInstrumentNumberOfPaymentInstallments" id="ctrm_DebtInstrumentNumberOfPaymentInstallments" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="DebtInstrumentNumberOfTranches" id="ctrm_DebtInstrumentNumberOfTranches" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="DebtInstrumentTrailingPeriodToMaintainEbitdaToNetInterestExpenseRatio" id="ctrm_DebtInstrumentTrailingPeriodToMaintainEbitdaToNetInterestExpenseRatio" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration"/>
<xs:element name="NumberOfShipOwningSubsidiariesEnteringIntoTermLoanFacility" id="ctrm_NumberOfShipOwningSubsidiariesEnteringIntoTermLoanFacility" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant"/>
</xs:schema>

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