<?xml version="1.0" encoding="us-ascii"?>
<!--Generated by Broadridge PROfile 26.3.2.5342 Broadridge-->
<xs:schema targetNamespace="http://costamarebulkers.com./20251231" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:cmdb="http://costamarebulkers.com./20251231" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dei="http://xbrl.sec.gov/dei/2025" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:us-types="http://fasb.org/us-types/2025" xmlns:srt-types="http://fasb.org/srt-types/2025">
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xlink:type="simple" xlink:href="cmdb-20251231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="cmdb-20251231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="cmdb-20251231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:linkbaseRef xlink:type="simple" xlink:href="cmdb-20251231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" />
      <link:roleType roleURI="http://costamarebulkers.com./role/DocumentAndEntityInformation" id="DocumentAndEntityInformation">
        <link:definition>000100 - Document - Document and Entity Information</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://costamarebulkers.com./role/ConsolidatedBalanceSheets" id="ConsolidatedBalanceSheets">
        <link:definition>010000 - Statement - Consolidated Balance Sheets</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://costamarebulkers.com./role/ConsolidatedBalanceSheetsParentheticals" id="ConsolidatedBalanceSheetsParentheticals">
        <!--Parent Role: Consolidated Balance Sheets-->
        <link:definition>010100 - Statement - Consolidated Balance Sheets (Parentheticals)</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://costamarebulkers.com./role/ConsolidatedStatementsOfOperations" id="ConsolidatedStatementsOfOperations">
        <link:definition>020000 - Statement - Consolidated Statements of Operations</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://costamarebulkers.com./role/ConsolidatedStatementsOfComprehensiveIncomeLoss" id="ConsolidatedStatementsOfComprehensiveIncomeLoss">
        <link:definition>030000 - Statement - Consolidated Statements of Comprehensive Income (Loss)</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://costamarebulkers.com./role/ConsolidatedStatementsOfShareholdersEquity" id="ConsolidatedStatementsOfShareholdersEquity">
        <link:definition>040000 - Statement - Consolidated Statements of Shareholders' Equity</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://costamarebulkers.com./role/ConsolidatedStatementsOfCashFlows" id="ConsolidatedStatementsOfCashFlows">
        <link:definition>050000 - Statement - Consolidated Statements of Cash Flows</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://costamarebulkers.com./role/CombinedCarveoutBalanceSheet" id="CombinedCarveoutBalanceSheet">
        <link:definition>060000 - Statement - Combined Carve-out Balance Sheet</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://costamarebulkers.com./role/CombinedCarveoutStatementsOfOperations" id="CombinedCarveoutStatementsOfOperations">
        <link:definition>070000 - Statement - Combined Carve-out Statements of Operations</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://costamarebulkers.com./role/CombinedCarveoutStatementsOfComprehensiveLoss" id="CombinedCarveoutStatementsOfComprehensiveLoss">
        <link:definition>080000 - Statement - Combined Carve-out Statements of Comprehensive Loss</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://costamarebulkers.com./role/CombinedCarveoutStatementsOfShareholdersEquity" id="CombinedCarveoutStatementsOfShareholdersEquity">
        <link:definition>090000 - Statement - Combined Carve-out Statements of Shareholders' Equity</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://costamarebulkers.com./role/CombinedCarveoutStatementsOfCashFlows" id="CombinedCarveoutStatementsOfCashFlows">
        <link:definition>100000 - Statement - Combined Carve-out Statements of Cash Flows</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://costamarebulkers.com./role/Note1BasisOfPresentationAndGeneralInformation" id="Note1BasisOfPresentationAndGeneralInformation">
        <link:definition>110100 - Disclosure - Note 1 - Basis of Presentation and General Information</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://costamarebulkers.com./role/Note2SignificantAccountingPoliciesAndRecentAccountingPronouncements" id="Note2SignificantAccountingPoliciesAndRecentAccountingPronouncements">
        <link:definition>110200 - Disclosure - Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements</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://costamarebulkers.com./role/Note3TransactionsWithRelatedParties" id="Note3TransactionsWithRelatedParties">
        <link:definition>110300 - Disclosure - Note 3 - Transactions With Related Parties</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://costamarebulkers.com./role/Note4Inventories" id="Note4Inventories">
        <link:definition>110400 - Disclosure - Note 4 - Inventories</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://costamarebulkers.com./role/Note5VesselsNet" id="Note5VesselsNet">
        <link:definition>110500 - Disclosure - Note 5 - Vessels, Net</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://costamarebulkers.com./role/Note6DeferredChargesNet" id="Note6DeferredChargesNet">
        <link:definition>110600 - Disclosure - Note 6 - Deferred Charges, Net</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://costamarebulkers.com./role/Note7LongtermDebt" id="Note7LongtermDebt">
        <link:definition>110700 - Disclosure - Note 7 - Long-term Debt</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://costamarebulkers.com./role/Note8OperatingLeaseRightofuseAssetsAndLiabilities" id="Note8OperatingLeaseRightofuseAssetsAndLiabilities">
        <link:definition>110800 - Disclosure - Note 8 - Operating Lease Right-of-use Assets and Liabilities</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://costamarebulkers.com./role/Note9UnearnedRevenue" id="Note9UnearnedRevenue">
        <link:definition>110900 - Disclosure - Note 9 - Unearned Revenue</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://costamarebulkers.com./role/Note10CommitmentsAndContingencies" id="Note10CommitmentsAndContingencies">
        <link:definition>111000 - Disclosure - Note 10 - Commitments and Contingencies</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://costamarebulkers.com./role/Note11StockholdersEquity" id="Note11StockholdersEquity">
        <link:definition>111100 - Disclosure - Note 11 - Stockholders' Equity</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://costamarebulkers.com./role/Note12EarningsLossesPerShare" id="Note12EarningsLossesPerShare">
        <link:definition>111200 - Disclosure - Note 12 - Earnings (Losses) Per Share</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://costamarebulkers.com./role/Note13TotalVoyageRevenues" id="Note13TotalVoyageRevenues">
        <link:definition>111300 - Disclosure - Note 13 - Total Voyage Revenues</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://costamarebulkers.com./role/Note14InterestAndFinanceCosts" id="Note14InterestAndFinanceCosts">
        <link:definition>111400 - Disclosure - Note 14 - Interest and Finance Costs</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://costamarebulkers.com./role/Note15Taxes" id="Note15Taxes">
        <link:definition>111500 - Disclosure - Note 15 - Taxes</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://costamarebulkers.com./role/Note16Derivatives" id="Note16Derivatives">
        <link:definition>111600 - Disclosure - Note 16 - Derivatives</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://costamarebulkers.com./role/Note17OtherNet" id="Note17OtherNet">
        <link:definition>111700 - Disclosure - Note 17 - Other, Net</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://costamarebulkers.com./role/Note18FinancialInstruments" id="Note18FinancialInstruments">
        <link:definition>111800 - Disclosure - Note 18 - Financial Instruments</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://costamarebulkers.com./role/Note19SubsequentEvents" id="Note19SubsequentEvents">
        <link:definition>111900 - Disclosure - Note 19 - Subsequent Events</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://costamarebulkers.com./role/Note1BasisOfPresentationAndGeneralInformation1" id="Note1BasisOfPresentationAndGeneralInformation1">
        <link:definition>112000 - Disclosure - Note 1 - Basis of Presentation and General Information 1</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://costamarebulkers.com./role/Note2SignificantAccountingPoliciesAndRecentAccountingPronouncements1" id="Note2SignificantAccountingPoliciesAndRecentAccountingPronouncements1">
        <link:definition>112100 - Disclosure - Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements 1</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://costamarebulkers.com./role/Note3TransactionsWithRelatedParties1" id="Note3TransactionsWithRelatedParties1">
        <link:definition>112200 - Disclosure - Note 3 - Transactions with Related Parties 1</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://costamarebulkers.com./role/Note4Inventories1" id="Note4Inventories1">
        <link:definition>112300 - Disclosure - Note 4 - Inventories 1</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://costamarebulkers.com./role/Note5VesselsAndAdvancesNet" id="Note5VesselsAndAdvancesNet">
        <link:definition>112400 - Disclosure - Note 5 - Vessels and Advances, Net</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://costamarebulkers.com./role/Note6DeferredChargesNet1" id="Note6DeferredChargesNet1">
        <link:definition>112500 - Disclosure - Note 6 - Deferred Charges, net 1</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://costamarebulkers.com./role/Note7LongtermDebt1" id="Note7LongtermDebt1">
        <link:definition>112600 - Disclosure - Note 7 - Long-term Debt 1</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://costamarebulkers.com./role/Note8CharterinArrangements" id="Note8CharterinArrangements">
        <link:definition>112700 - Disclosure - Note 8 - Charter-in Arrangements</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://costamarebulkers.com./role/Note9StockholdersEquity" id="Note9StockholdersEquity">
        <link:definition>112800 - Disclosure - Note 9 - Stockholders' Equity</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://costamarebulkers.com./role/Note10VoyageRevenues" id="Note10VoyageRevenues">
        <link:definition>112900 - Disclosure - Note 10 - Voyage Revenues</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://costamarebulkers.com./role/Note11InterestAndFinanceCostsNet" id="Note11InterestAndFinanceCostsNet">
        <link:definition>113000 - Disclosure - Note 11 - Interest and Finance Costs, Net</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://costamarebulkers.com./role/Note12Taxes" id="Note12Taxes">
        <link:definition>113100 - Disclosure - Note 12 - Taxes</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://costamarebulkers.com./role/Note13Derivatives" id="Note13Derivatives">
        <link:definition>113200 - Disclosure - Note 13 - Derivatives</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://costamarebulkers.com./role/Note14FinancialInstruments" id="Note14FinancialInstruments">
        <link:definition>113300 - Disclosure - Note 14 - Financial Instruments</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://costamarebulkers.com./role/Note15ComprehensiveIncomeLoss" id="Note15ComprehensiveIncomeLoss">
        <link:definition>113400 - Disclosure - Note 15 - Comprehensive Income (Loss)</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://costamarebulkers.com./role/Note16SubsequentEvents" id="Note16SubsequentEvents">
        <link:definition>113500 - Disclosure - Note 16 - Subsequent Events</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://costamarebulkers.com./role/InsiderTradingPoliciesAndProcedures" id="InsiderTradingPoliciesAndProcedures">
        <link:definition>113600 - Disclosure - Insider Trading Policies and Procedures</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://costamarebulkers.com./role/CybersecurityRiskManagementAndStrategyDisclosure" id="CybersecurityRiskManagementAndStrategyDisclosure">
        <link:definition>113700 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure</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://costamarebulkers.com./role/Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsPolicies" id="Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsPolicies">
        <!--Parent Role: Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements-->
        <link:definition>120200 - Disclosure - Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements (Policies)</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://costamarebulkers.com./role/Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsTables" id="Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsTables">
        <!--Parent Role: Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements-->
        <link:definition>130200 - Disclosure - Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements (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://costamarebulkers.com./role/Note5VesselsNetTables" id="Note5VesselsNetTables">
        <!--Parent Role: Note 5 - Vessels, Net-->
        <link:definition>130500 - Disclosure - Note 5 - Vessels, Net (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://costamarebulkers.com./role/Note6DeferredChargesNetTables" id="Note6DeferredChargesNetTables">
        <!--Parent Role: Note 6 - Deferred Charges, Net-->
        <link:definition>130600 - Disclosure - Note 6 - Deferred Charges, Net (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://costamarebulkers.com./role/Note7LongtermDebtTables" id="Note7LongtermDebtTables">
        <!--Parent Role: Note 7 - Long-term Debt-->
        <link:definition>130700 - Disclosure - Note 7 - Long-term Debt (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://costamarebulkers.com./role/Note8OperatingLeaseRightofuseAssetsAndLiabilitiesTables" id="Note8OperatingLeaseRightofuseAssetsAndLiabilitiesTables">
        <!--Parent Role: Note 8 - Operating Lease Right-of-use Assets and Liabilities-->
        <link:definition>130800 - Disclosure - Note 8 - Operating Lease Right-of-use Assets and Liabilities (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://costamarebulkers.com./role/Note10CommitmentsAndContingenciesTables" id="Note10CommitmentsAndContingenciesTables">
        <!--Parent Role: Note 10 - Commitments and Contingencies-->
        <link:definition>131000 - Disclosure - Note 10 - Commitments and Contingencies (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://costamarebulkers.com./role/Note12EarningsLossesPerShareTables" id="Note12EarningsLossesPerShareTables">
        <!--Parent Role: Note 12 - Earnings (Losses) Per Share-->
        <link:definition>131200 - Disclosure - Note 12 - Earnings (Losses) Per Share (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://costamarebulkers.com./role/Note13TotalVoyageRevenuesTables" id="Note13TotalVoyageRevenuesTables">
        <!--Parent Role: Note 13 - Total Voyage Revenues-->
        <link:definition>131300 - Disclosure - Note 13 - Total Voyage Revenues (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://costamarebulkers.com./role/Note14InterestAndFinanceCostsTables" id="Note14InterestAndFinanceCostsTables">
        <!--Parent Role: Note 14 - Interest and Finance Costs-->
        <link:definition>131400 - Disclosure - Note 14 - 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://costamarebulkers.com./role/Note16DerivativesTables" id="Note16DerivativesTables">
        <!--Parent Role: Note 16 - Derivatives-->
        <link:definition>131600 - Disclosure - Note 16 - Derivatives (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://costamarebulkers.com./role/Note18FinancialInstrumentsTables" id="Note18FinancialInstrumentsTables">
        <!--Parent Role: Note 18 - Financial Instruments-->
        <link:definition>131800 - Disclosure - Note 18 - Financial Instruments (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://costamarebulkers.com./role/Note2SignificantAccountingPoliciesAndRecentAccountingPronouncements1Tables" id="Note2SignificantAccountingPoliciesAndRecentAccountingPronouncements1Tables">
        <!--Parent Role: Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements 1-->
        <link:definition>132100 - Disclosure - Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements 1 (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://costamarebulkers.com./role/Note7LongtermDebt1Tables" id="Note7LongtermDebt1Tables">
        <!--Parent Role: Note 7 - Long-term Debt 1-->
        <link:definition>132600 - Disclosure - Note 7 - Long-term Debt 1 (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://costamarebulkers.com./role/Note10VoyageRevenuesTables" id="Note10VoyageRevenuesTables">
        <!--Parent Role: Note 10 - Voyage Revenues-->
        <link:definition>132900 - Disclosure - Note 10 - Voyage Revenues (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://costamarebulkers.com./role/Note11InterestAndFinanceCostsNetTables" id="Note11InterestAndFinanceCostsNetTables">
        <!--Parent Role: Note 11 - Interest and Finance Costs, Net-->
        <link:definition>133000 - Disclosure - Note 11 - Interest and Finance Costs, Net (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://costamarebulkers.com./role/Note13DerivativesTables" id="Note13DerivativesTables">
        <!--Parent Role: Note 13 - Derivatives-->
        <link:definition>133200 - Disclosure - Note 13 - Derivatives (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://costamarebulkers.com./role/Note14FinancialInstrumentsTables" id="Note14FinancialInstrumentsTables">
        <!--Parent Role: Note 14 - Financial Instruments-->
        <link:definition>133300 - Disclosure - Note 14 - Financial Instruments (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://costamarebulkers.com./role/Note1BasisOfPresentationAndGeneralInformationDetails" id="Note1BasisOfPresentationAndGeneralInformationDetails">
        <!--Parent Role: Note 1 - Basis of Presentation and General Information-->
        <link:definition>140100 - Disclosure - Note 1 - Basis of Presentation and 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://costamarebulkers.com./role/Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsDetails" id="Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsDetails">
        <!--Parent Role: Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements-->
        <link:definition>140200 - Disclosure - Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements (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://costamarebulkers.com./role/Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsReconciliationOfCashCashEquivalentsAndRestrictedCashDetails" id="Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsReconciliationOfCashCashEquivalentsAndRestrictedCashDetails">
        <!--Parent Role: Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements-->
        <link:definition>140202 - Disclosure - Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements - Reconciliation of Cash, Cash Equivalents and Restricted Cash (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://costamarebulkers.com./role/Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsRevenuesFromSignificantCharterersDetails" id="Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsRevenuesFromSignificantCharterersDetails">
        <!--Parent Role: Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements-->
        <link:definition>140204 - Disclosure - Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements - Revenues from Significant Charterers (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://costamarebulkers.com./role/Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsReconciliationOfCashCashEquivalentsAndRestrictedCash1Details" id="Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsReconciliationOfCashCashEquivalentsAndRestrictedCash1Details">
        <!--Parent Role: Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements-->
        <link:definition>140206 - Disclosure - Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements - Reconciliation of Cash, Cash Equivalents and Restricted Cash 1 (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://costamarebulkers.com./role/Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsRevenuesFromSignificantCharterers1Details" id="Note2SignificantAccountingPoliciesAndRecentAccountingPronouncementsRevenuesFromSignificantCharterers1Details">
        <!--Parent Role: Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements-->
        <link:definition>140208 - Disclosure - Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements - Revenues from Significant Charterers 1 (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://costamarebulkers.com./role/Note3TransactionsWithRelatedPartiesDetails" id="Note3TransactionsWithRelatedPartiesDetails">
        <!--Parent Role: Note 3 - Transactions With Related Parties-->
        <link:definition>140300 - Disclosure - Note 3 - Transactions With Related Parties (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://costamarebulkers.com./role/Note5VesselsNetDetails" id="Note5VesselsNetDetails">
        <!--Parent Role: Note 5 - Vessels, Net-->
        <link:definition>140500 - Disclosure - Note 5 - Vessels, 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://costamarebulkers.com./role/Note5VesselsNetSummaryOfVesselsDetails" id="Note5VesselsNetSummaryOfVesselsDetails">
        <!--Parent Role: Note 5 - Vessels, Net-->
        <link:definition>140502 - Disclosure - Note 5 - Vessels, Net - Summary of Vessels (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://costamarebulkers.com./role/Note6DeferredChargesNetScheduleOfDeferredChargesNetDetails" id="Note6DeferredChargesNetScheduleOfDeferredChargesNetDetails">
        <!--Parent Role: Note 6 - Deferred Charges, Net-->
        <link:definition>140600 - Disclosure - Note 6 - Deferred Charges, Net - Schedule of 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://costamarebulkers.com./role/Note6DeferredChargesNetDetails" id="Note6DeferredChargesNetDetails">
        <!--Parent Role: Note 6 - Deferred Charges, Net-->
        <link:definition>140602 - Disclosure - Note 6 - 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://costamarebulkers.com./role/Note7LongtermDebtDetails" id="Note7LongtermDebtDetails">
        <!--Parent Role: Note 7 - Long-term Debt-->
        <link:definition>140700 - Disclosure - Note 7 - Long-term 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://costamarebulkers.com./role/Note7LongtermDebtScheduleOfLongtermDebtDetails" id="Note7LongtermDebtScheduleOfLongtermDebtDetails">
        <!--Parent Role: Note 7 - Long-term Debt-->
        <link:definition>140702 - Disclosure - Note 7 - Long-term Debt - Schedule of Long-term 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://costamarebulkers.com./role/Note7LongtermDebtAnnualRepaymentsDetails" id="Note7LongtermDebtAnnualRepaymentsDetails">
        <!--Parent Role: Note 7 - Long-term Debt-->
        <link:definition>140704 - Disclosure - Note 7 - Long-term Debt - Annual Repayments (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://costamarebulkers.com./role/Note7LongtermDebtFinancingCostsIncludedInLoanBalancesDetails" id="Note7LongtermDebtFinancingCostsIncludedInLoanBalancesDetails">
        <!--Parent Role: Note 7 - Long-term Debt-->
        <link:definition>140706 - Disclosure - Note 7 - Long-term Debt - Financing Costs Included in Loan Balances (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://costamarebulkers.com./role/Note7LongtermDebtScheduleOfLongtermDebt1Details" id="Note7LongtermDebtScheduleOfLongtermDebt1Details">
        <!--Parent Role: Note 7 - Long-term Debt-->
        <link:definition>140708 - Disclosure - Note 7 - Long-term Debt - Schedule of Long-term Debt 1 (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://costamarebulkers.com./role/Note8OperatingLeaseRightofuseAssetsAndLiabilitiesDetails" id="Note8OperatingLeaseRightofuseAssetsAndLiabilitiesDetails">
        <!--Parent Role: Note 8 - Operating Lease Right-of-use Assets and Liabilities-->
        <link:definition>140800 - Disclosure - Note 8 - Operating Lease Right-of-use Assets and Liabilities (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://costamarebulkers.com./role/Note8OperatingLeaseRightofuseAssetsAndLiabilitiesPaymentsRequiredOnLeaseLiabilitiesDetails" id="Note8OperatingLeaseRightofuseAssetsAndLiabilitiesPaymentsRequiredOnLeaseLiabilitiesDetails">
        <!--Parent Role: Note 8 - Operating Lease Right-of-use Assets and Liabilities-->
        <link:definition>140802 - Disclosure - Note 8 - Operating Lease Right-of-use Assets and Liabilities - Payments Required on Lease Liabilities (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://costamarebulkers.com./role/Note9UnearnedRevenueDetails" id="Note9UnearnedRevenueDetails">
        <!--Parent Role: Note 9 - Unearned Revenue-->
        <link:definition>140900 - Disclosure - Note 9 - Unearned Revenue (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://costamarebulkers.com./role/Note10CommitmentsAndContingenciesDetails" id="Note10CommitmentsAndContingenciesDetails">
        <!--Parent Role: Note 10 - Commitments and Contingencies-->
        <link:definition>141000 - Disclosure - Note 10 - 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://costamarebulkers.com./role/Note10CommitmentsAndContingenciesScheduleOfTimeCharterArrangementsDetails" id="Note10CommitmentsAndContingenciesScheduleOfTimeCharterArrangementsDetails">
        <!--Parent Role: Note 10 - Commitments and Contingencies-->
        <link:definition>141002 - Disclosure - Note 10 - Commitments and Contingencies - Schedule of Time Charter Arrangements (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://costamarebulkers.com./role/Note11StockholdersEquityDetails" id="Note11StockholdersEquityDetails">
        <!--Parent Role: Note 11 - Stockholders' Equity-->
        <link:definition>141100 - Disclosure - Note 11 - Stockholders' Equity (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://costamarebulkers.com./role/Note12EarningsLossesPerShareScheduleOfEarningsPerShareDetails" id="Note12EarningsLossesPerShareScheduleOfEarningsPerShareDetails">
        <!--Parent Role: Note 12 - Earnings (Losses) Per Share-->
        <link:definition>141200 - Disclosure - Note 12 - Earnings (Losses) Per Share - Schedule of 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://costamarebulkers.com./role/Note13TotalVoyageRevenuesDetails" id="Note13TotalVoyageRevenuesDetails">
        <!--Parent Role: Note 13 - Total Voyage Revenues-->
        <link:definition>141300 - Disclosure - Note 13 - Total Voyage 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://costamarebulkers.com./role/Note13TotalVoyageRevenuesScheduleOfVoyageRevenuesDetails" id="Note13TotalVoyageRevenuesScheduleOfVoyageRevenuesDetails">
        <!--Parent Role: Note 13 - Total Voyage Revenues-->
        <link:definition>141302 - Disclosure - Note 13 - Total Voyage Revenues - Schedule of Voyage 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://costamarebulkers.com./role/Note14InterestAndFinanceCostsDetails" id="Note14InterestAndFinanceCostsDetails">
        <!--Parent Role: Note 14 - Interest and Finance Costs-->
        <link:definition>141400 - Disclosure - Note 14 - 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://costamarebulkers.com./role/Note14InterestAndFinanceCostsScheduleOfIncomeStatementRelatedCostsDetails" id="Note14InterestAndFinanceCostsScheduleOfIncomeStatementRelatedCostsDetails">
        <!--Parent Role: Note 14 - Interest and Finance Costs-->
        <link:definition>141402 - Disclosure - Note 14 - Interest and Finance Costs - Schedule of Income Statement Related 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://costamarebulkers.com./role/Note15TaxesDetails" id="Note15TaxesDetails">
        <!--Parent Role: Note 15 - Taxes-->
        <link:definition>141500 - Disclosure - Note 15 - Taxes (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://costamarebulkers.com./role/Note16DerivativesDetails" id="Note16DerivativesDetails">
        <!--Parent Role: Note 16 - Derivatives-->
        <link:definition>141600 - Disclosure - Note 16 - Derivatives (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://costamarebulkers.com./role/Note16DerivativesDerivativesByTypeDetails" id="Note16DerivativesDerivativesByTypeDetails">
        <!--Parent Role: Note 16 - Derivatives-->
        <link:definition>141602 - Disclosure - Note 16 - Derivatives - Derivatives by Type (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://costamarebulkers.com./role/Note16DerivativesDerivativesNotDesignatedAsHedgingInstrumentsAndIneffectivenessOfHedgingInstrumentsDetails" id="Note16DerivativesDerivativesNotDesignatedAsHedgingInstrumentsAndIneffectivenessOfHedgingInstrumentsDetails">
        <!--Parent Role: Note 16 - Derivatives-->
        <link:definition>141604 - Disclosure - Note 16 - Derivatives - Derivatives Not Designated as Hedging Instruments and Ineffectiveness of Hedging Instruments (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://costamarebulkers.com./role/Note17OtherNetDetails" id="Note17OtherNetDetails">
        <!--Parent Role: Note 17 - Other, Net-->
        <link:definition>141700 - Disclosure - Note 17 - Other, 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://costamarebulkers.com./role/Note18FinancialInstrumentsDetails" id="Note18FinancialInstrumentsDetails">
        <!--Parent Role: Note 18 - Financial Instruments-->
        <link:definition>141800 - Disclosure - Note 18 - Financial Instruments (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://costamarebulkers.com./role/Note18FinancialInstrumentsFairValueOfAssetsAndLiabilitiesDetails" id="Note18FinancialInstrumentsFairValueOfAssetsAndLiabilitiesDetails">
        <!--Parent Role: Note 18 - Financial Instruments-->
        <link:definition>141802 - Disclosure - Note 18 - Financial Instruments - Fair Value of Assets and Liabilities (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://costamarebulkers.com./role/Note19SubsequentEventsDetails" id="Note19SubsequentEventsDetails">
        <!--Parent Role: Note 19 - Subsequent Events-->
        <link:definition>141900 - Disclosure - Note 19 - 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>
      <link:roleType roleURI="http://costamarebulkers.com./role/Note1BasisOfPresentationAndGeneralInformation1Details" id="Note1BasisOfPresentationAndGeneralInformation1Details">
        <!--Parent Role: Note 1 - Basis of Presentation and General Information 1-->
        <link:definition>142000 - Disclosure - Note 1 - Basis of Presentation and General Information 1 (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://costamarebulkers.com./role/Note2SignificantAccountingPoliciesAndRecentAccountingPronouncements1Details" id="Note2SignificantAccountingPoliciesAndRecentAccountingPronouncements1Details">
        <!--Parent Role: Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements 1-->
        <link:definition>142100 - Disclosure - Note 2 - Significant Accounting Policies and Recent Accounting Pronouncements 1 (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://costamarebulkers.com./role/Note3TransactionsWithRelatedParties1Details" id="Note3TransactionsWithRelatedParties1Details">
        <!--Parent Role: Note 3 - Transactions with Related Parties 1-->
        <link:definition>142200 - Disclosure - Note 3 - Transactions With Related Parties 1 (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://costamarebulkers.com./role/Note5VesselsAndAdvancesNetDetails" id="Note5VesselsAndAdvancesNetDetails">
        <!--Parent Role: Note 5 - Vessels and Advances, Net-->
        <link:definition>142400 - Disclosure - Note 5 - Vessels and Advances, 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://costamarebulkers.com./role/Note6DeferredChargesNet1Details" id="Note6DeferredChargesNet1Details">
        <!--Parent Role: Note 6 - Deferred Charges, net 1-->
        <link:definition>142500 - Disclosure - Note 6 - Deferred Charges, Net 1 (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://costamarebulkers.com./role/Note7LongtermDebt1Details" id="Note7LongtermDebt1Details">
        <!--Parent Role: Note 7 - Long-term Debt 1-->
        <link:definition>142600 - Disclosure - Note 7 - Long-term Debt 1 (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://costamarebulkers.com./role/Note8CharterinArrangementsDetails" id="Note8CharterinArrangementsDetails">
        <!--Parent Role: Note 8 - Charter-in Arrangements-->
        <link:definition>142700 - Disclosure - Note 8 - Charter-in Arrangements (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://costamarebulkers.com./role/Note9StockholdersEquityDetails" id="Note9StockholdersEquityDetails">
        <!--Parent Role: Note 9 - Stockholders' Equity-->
        <link:definition>142800 - Disclosure - Note 9 - Stockholders' Equity (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://costamarebulkers.com./role/Note10VoyageRevenuesScheduleOfVoyageRevenuesDetails" id="Note10VoyageRevenuesScheduleOfVoyageRevenuesDetails">
        <!--Parent Role: Note 10 - Voyage Revenues-->
        <link:definition>142900 - Disclosure - Note 10 - Voyage Revenues - Schedule of Voyage 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://costamarebulkers.com./role/Note11InterestAndFinanceCostsNetScheduleOfIncomeStatementRelatedCostsDetails" id="Note11InterestAndFinanceCostsNetScheduleOfIncomeStatementRelatedCostsDetails">
        <!--Parent Role: Note 11 - Interest and Finance Costs, Net-->
        <link:definition>143000 - Disclosure - Note 11 - Interest and Finance Costs, Net - Schedule of Income Statement Related 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://costamarebulkers.com./role/Note12TaxesDetails" id="Note12TaxesDetails">
        <!--Parent Role: Note 12 - Taxes-->
        <link:definition>143100 - Disclosure - Note 12 - Taxes (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://costamarebulkers.com./role/Note13DerivativesDetails" id="Note13DerivativesDetails">
        <!--Parent Role: Note 13 - Derivatives-->
        <link:definition>143200 - Disclosure - Note 13 - Derivatives (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://costamarebulkers.com./role/Note13DerivativesDerivativesByTypeDetails" id="Note13DerivativesDerivativesByTypeDetails">
        <!--Parent Role: Note 13 - Derivatives-->
        <link:definition>143202 - Disclosure - Note 13 - Derivatives - Derivatives by Type (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://costamarebulkers.com./role/Note13DerivativesEffectOfDerivativeInstrumentsDetails" id="Note13DerivativesEffectOfDerivativeInstrumentsDetails">
        <!--Parent Role: Note 13 - Derivatives-->
        <link:definition>143204 - Disclosure - Note 13 - Derivatives - Effect of Derivative Instruments (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://costamarebulkers.com./role/Note13DerivativesDerivativesNotDesignatedAsHedgingInstrumentsAndIneffectivenessOfHedgingInstrumentsDetails" id="Note13DerivativesDerivativesNotDesignatedAsHedgingInstrumentsAndIneffectivenessOfHedgingInstrumentsDetails">
        <!--Parent Role: Note 13 - Derivatives-->
        <link:definition>143206 - Disclosure - Note 13 - Derivatives - Derivatives Not Designated as Hedging Instruments and Ineffectiveness of Hedging Instruments (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://costamarebulkers.com./role/Note14FinancialInstrumentsDetails" id="Note14FinancialInstrumentsDetails">
        <!--Parent Role: Note 14 - Financial Instruments-->
        <link:definition>143300 - Disclosure - Note 14 - Financial Instruments (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://costamarebulkers.com./role/Note14FinancialInstrumentsFairValueOfAssetsAndLiabilitiesDetails" id="Note14FinancialInstrumentsFairValueOfAssetsAndLiabilitiesDetails">
        <!--Parent Role: Note 14 - Financial Instruments-->
        <link:definition>143302 - Disclosure - Note 14 - Financial Instruments - Fair Value of Assets and Liabilities (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://costamarebulkers.com./role/Note15ComprehensiveIncomeLossDetails" id="Note15ComprehensiveIncomeLossDetails">
        <!--Parent Role: Note 15 - Comprehensive Income (Loss)-->
        <link:definition>143400 - Disclosure - Note 15 - Comprehensive Income (Loss) (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://costamarebulkers.com./role/Note16SubsequentEventsDetails" id="Note16SubsequentEventsDetails">
        <!--Parent Role: Note 16 - Subsequent Events-->
        <link:definition>143500 - Disclosure - Note 16 - 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>
    </xs:appinfo>
  </xs:annotation>
  <xs:import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/currency/2025" schemaLocation="https://xbrl.sec.gov/currency/2025/currency-2025.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/exch/2025" schemaLocation="https://xbrl.sec.gov/exch/2025/exch-2025.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/naics/2025" schemaLocation="https://xbrl.sec.gov/naics/2025/naics-2025.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/sic/2025" schemaLocation="https://xbrl.sec.gov/sic/2025/sic-2025.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/2025" schemaLocation="https://xbrl.sec.gov/stpr/2025/stpr-2025.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/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-types-2025.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/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd" />
  <xs:import namespace="http://fasb.org/srt-types/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-types-2025.xsd" />
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/ecd/2025" schemaLocation="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd" />
  <xs:import namespace="http://xbrl.sec.gov/cyd/2025" schemaLocation="https://xbrl.sec.gov/cyd/2025/cyd-2025.xsd" />
  <xs:element name="PreferredStockPurchaseRightsMember" id="cmdb_PreferredStockPurchaseRightsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CostamareBulkersHoldingsLimitedPredecessorMember" id="cmdb_CostamareBulkersHoldingsLimitedPredecessorMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="IncreaseDecreaseOnAccruedCharterRevenue" id="cmdb_IncreaseDecreaseOnAccruedCharterRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="AmortizationOfHedgeEffectivenessExcludedComponentFromCashFlowHedges" id="cmdb_AmortizationOfHedgeEffectivenessExcludedComponentFromCashFlowHedges" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="GainLossOnVesselsHeldForSale" id="cmdb_GainLossOnVesselsHeldForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="AmortizationOfAssumedTimeCharter" id="cmdb_AmortizationOfAssumedTimeCharter" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="GainLossOnSalesOfVesselsNet" id="cmdb_GainLossOnSalesOfVesselsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="ProceedsFromTheSaleOfVesselsNet" id="cmdb_ProceedsFromTheSaleOfVesselsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="PaymentsToAcquireVessels" id="cmdb_PaymentsToAcquireVessels" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="IncreaseDecreaseInDrydockings" id="cmdb_IncreaseDecreaseInDrydockings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="AmortizationOfDeferredDrydockingAndSpecialSurveyCosts" id="cmdb_AmortizationOfDeferredDrydockingAndSpecialSurveyCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="NotesToFinancialStatementsAbstract" id="cmdb_NotesToFinancialStatementsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="InterestAndFinanceCostsTextBlock" id="cmdb_InterestAndFinanceCostsTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-11-interest-and-finance-costs-net-tables" id="cmdb_statement-statement-note-11-interest-and-finance-costs-net-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="InterestAndFinanceCostsTableTextBlock" id="cmdb_InterestAndFinanceCostsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-revenues-from-significant-charterers-1-details" id="cmdb_statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-revenues-from-significant-charterers-1-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AllMajorCustomersMember" id="cmdb_AllMajorCustomersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="MajorCustomerBMember" id="cmdb_MajorCustomerBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="MajorCustomerAMember" id="cmdb_MajorCustomerAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-reconciliation-of-cash-cash-equivalents-and-restricted-cash-details" id="cmdb_statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-reconciliation-of-cash-cash-equivalents-and-restricted-cash-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-revenues-from-significant-charterers-details" id="cmdb_statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-revenues-from-significant-charterers-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="VesselsAndAdvancesNet" id="cmdb_VesselsAndAdvancesNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="NetParentInvestment" id="cmdb_NetParentInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="NoteToFinancialStatementDetailsTextual" id="cmdb_NoteToFinancialStatementDetailsTextual" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-7-longterm-debt-1-tables" id="cmdb_statement-statement-note-7-longterm-debt-1-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="VesselsInCommercialPoolEmploymentArrangement" id="cmdb_VesselsInCommercialPoolEmploymentArrangement" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="FutureMinimumContractualCharterRevenuesAssumptionsMember" id="cmdb_FutureMinimumContractualCharterRevenuesAssumptionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="VesselsForWhichTimeCharterRateIsIndexLinked" id="cmdb_VesselsForWhichTimeCharterRateIsIndexLinked" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="RevenueDaysPerAnnum" id="cmdb_RevenueDaysPerAnnum" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="TimeCharterArrangementsRemainingTermsPeriod" id="cmdb_TimeCharterArrangementsRemainingTermsPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-18-financial-instruments-fair-value-of-assets-and-liabilities-details" id="cmdb_statement-statement-note-18-financial-instruments-fair-value-of-assets-and-liabilities-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="EuroUSDollarCurrencyOptionsMember" id="cmdb_EuroUSDollarCurrencyOptionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ForwardFreightAgreementsFFAsMember" id="cmdb_ForwardFreightAgreementsFFAsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="EUAFuturesMember" id="cmdb_EUAFuturesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="BunkerSwapAgreementsMember" id="cmdb_BunkerSwapAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-14-interest-and-finance-costs-tables" id="cmdb_statement-statement-note-14-interest-and-finance-costs-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="NetParentInvestmentMember" id="cmdb_NetParentInvestmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ParentDistributionsNetEquityImpact" id="cmdb_ParentDistributionsNetEquityImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="KoushunMember" id="cmdb_KoushunMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AdstoneMarineCorpEtAlLoanAgreementEntered2024Member" id="cmdb_AdstoneMarineCorpEtAlLoanAgreementEntered2024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="MiracleMember" id="cmdb_MiracleMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ClaraMember" id="cmdb_ClaraMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CarryingCapacityOfDryBulkVesselsAtPeriodEndDwt" id="cmdb_CarryingCapacityOfDryBulkVesselsAtPeriodEndDwt" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="statement-statement-note-12-earnings-losses-per-share-schedule-of-earnings-per-share-details" id="cmdb_statement-statement-note-12-earnings-losses-per-share-schedule-of-earnings-per-share-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-12-earnings-losses-per-share-tables" id="cmdb_statement-statement-note-12-earnings-losses-per-share-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="USRelatedGrossTransportationIncomeThatTaxApplies" id="cmdb_USRelatedGrossTransportationIncomeThatTaxApplies" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-11-interest-and-finance-costs-net-schedule-of-income-statement-related-costs-details" id="cmdb_statement-statement-note-11-interest-and-finance-costs-net-schedule-of-income-statement-related-costs-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="BankChargesAndOtherFinancingCosts" id="cmdb_BankChargesAndOtherFinancingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="SwapInterestExpenseNet" id="cmdb_SwapInterestExpenseNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="statement-statement-note-14-interest-and-finance-costs-schedule-of-income-statement-related-costs-details" id="cmdb_statement-statement-note-14-interest-and-finance-costs-schedule-of-income-statement-related-costs-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="GeneralAndAdministrativeExpensesRelatedParties" id="cmdb_GeneralAndAdministrativeExpensesRelatedParties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="CharterinHireExpenses" id="cmdb_CharterinHireExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="ManagementAndAgencyFeesRelatedParties" id="cmdb_ManagementAndAgencyFeesRelatedParties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="VoyageExpenses" id="cmdb_VoyageExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="VoyageRevenue" id="cmdb_VoyageRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="ForeignExchangeGainsLossesInOperatingIncomeLoss" id="cmdb_ForeignExchangeGainsLossesInOperatingIncomeLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="statement-statement-note-14-financial-instruments-tables" id="cmdb_statement-statement-note-14-financial-instruments-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ScheduleOfDerivativeAssetsAndLiabilitiesAtFairValueTableTextBlock" id="cmdb_ScheduleOfDerivativeAssetsAndLiabilitiesAtFairValueTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-18-financial-instruments-tables" id="cmdb_statement-statement-note-18-financial-instruments-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="PythiasAndBernisMember" id="cmdb_PythiasAndBernisMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AcuityVerityEquityAndParityMember" id="cmdb_AcuityVerityEquityAndParityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="NumberOfVesselsWithSellersCredit" id="cmdb_NumberOfVesselsWithSellersCredit" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="ParityMember" id="cmdb_ParityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="UnearnedRevenueTextBlock" id="cmdb_UnearnedRevenueTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="TreasuryStockPolicyTextBlock" id="cmdb_TreasuryStockPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="GoingConcernPolicyPolicyTextBlock" id="cmdb_GoingConcernPolicyPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="AccountingForSpecialSurveyAndDrydockingCostsPolicyTextBlock" id="cmdb_AccountingForSpecialSurveyAndDrydockingCostsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="InsuranceClaimReceivablesPolicyTextBlock" id="cmdb_InsuranceClaimReceivablesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="VesselsAndAdvancesNetTextBlock" id="cmdb_VesselsAndAdvancesNetTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-5-vessels-net-summary-of-vessels-details" id="cmdb_statement-statement-note-5-vessels-net-summary-of-vessels-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="VesselsCostVesselSalesTransfersAndOtherMovements" id="cmdb_VesselsCostVesselSalesTransfersAndOtherMovements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="NetBookValueMember" id="cmdb_NetBookValueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="VesselCostMember" id="cmdb_VesselCostMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AccumulatedDepreciationMember" id="cmdb_AccumulatedDepreciationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="VesselsNet" id="cmdb_VesselsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="VesselsAtCost" id="cmdb_VesselsAtCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="ContributionOfVesselsAsPartOfTheSpinoff" id="cmdb_ContributionOfVesselsAsPartOfTheSpinoff" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="AccumulatedDepreciationVesselSalesTransfersAndOtherMovements" id="cmdb_AccumulatedDepreciationVesselSalesTransfersAndOtherMovements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-reconciliation-of-cash-cash-equivalents-and-restricted-cash-1-details" id="cmdb_statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-reconciliation-of-cash-cash-equivalents-and-restricted-cash-1-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-7-longterm-debt-financing-costs-included-in-loan-balances-details" id="cmdb_statement-statement-note-7-longterm-debt-financing-costs-included-in-loan-balances-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="IssuanceToDebtIssuanceCostsNet" id="cmdb_IssuanceToDebtIssuanceCostsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="DeferredChargesTextBlock" id="cmdb_DeferredChargesTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="PythiasMember" id="cmdb_PythiasMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ImperatorExImperatorAustralisMember" id="cmdb_ImperatorExImperatorAustralisMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="GorgoExGorgoypikoosMember" id="cmdb_GorgoExGorgoypikoosMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="BernisMember" id="cmdb_BernisMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AndatiMarineCorpEtAlLoanAgreementEntered2024Member" id="cmdb_AndatiMarineCorpEtAlLoanAgreementEntered2024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ArchetMarineCorpEtAlLoanAgreementEntered2024Member" id="cmdb_ArchetMarineCorpEtAlLoanAgreementEntered2024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CostamareBulkersShipsIncLoanAgreementEntered2025Member" id="cmdb_CostamareBulkersShipsIncLoanAgreementEntered2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="NumberOfVesselsSurveyInProcess" id="cmdb_NumberOfVesselsSurveyInProcess" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfVesselsCompletedDdDuringPeriod" id="cmdb_NumberOfVesselsCompletedDdDuringPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfVesselsProvidedAsCollateralsToSecureLoans" id="cmdb_NumberOfVesselsProvidedAsCollateralsToSecureLoans" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="ReceivableTerm" id="cmdb_ReceivableTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="CarryingValueOfVesselsProvidedAsCollateralsToSecureLoans" id="cmdb_CarryingValueOfVesselsProvidedAsCollateralsToSecureLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="RoseResourcePythiasBernisGorgoAcuityVerityEquityAndParityMember" id="cmdb_RoseResourcePythiasBernisGorgoAcuityVerityEquityAndParityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ImperatorExImperatorAustralisAndGorgoExGorgoypikoosMember" id="cmdb_ImperatorExImperatorAustralisAndGorgoExGorgoypikoosMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="NumberOfUnencumberedVessels" id="cmdb_NumberOfUnencumberedVessels" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="statement-statement-note-6-deferred-charges-net-tables" id="cmdb_statement-statement-note-6-deferred-charges-net-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ScheduleOfDeferredChargesTableTextBlock" id="cmdb_ScheduleOfDeferredChargesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-6-deferred-charges-net-schedule-of-deferred-charges-net-details" id="cmdb_statement-statement-note-6-deferred-charges-net-schedule-of-deferred-charges-net-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="DeferredChargesWriteoffAndOtherMovements" id="cmdb_DeferredChargesWriteoffAndOtherMovements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="DeferredChargesAdditions" id="cmdb_DeferredChargesAdditions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="statement-statement-note-7-longterm-debt-schedule-of-longterm-debt-details" id="cmdb_statement-statement-note-7-longterm-debt-schedule-of-longterm-debt-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="LongtermDebtGrossCurrentMaturities" id="cmdb_LongtermDebtGrossCurrentMaturities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="SilkstoneMarineCorpEtAlLoanAgreementEntered2024Member" id="cmdb_SilkstoneMarineCorpEtAlLoanAgreementEntered2024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-7-longterm-debt-tables" id="cmdb_statement-statement-note-7-longterm-debt-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ScheduleOfFinancingCostsTableTextBlock" id="cmdb_ScheduleOfFinancingCostsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-7-longterm-debt-annual-repayments-details" id="cmdb_statement-statement-note-7-longterm-debt-annual-repayments-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-10-commitments-and-contingencies-tables" id="cmdb_statement-statement-note-10-commitments-and-contingencies-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ScheduleOfNonCancelableLongtermTimeCharterContractsTableTextBlock" id="cmdb_ScheduleOfNonCancelableLongtermTimeCharterContractsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-8-operating-lease-rightofuse-assets-and-liabilities-tables" id="cmdb_statement-statement-note-8-operating-lease-rightofuse-assets-and-liabilities-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-8-operating-lease-rightofuse-assets-and-liabilities-payments-required-on-lease-liabilities-details" id="cmdb_statement-statement-note-8-operating-lease-rightofuse-assets-and-liabilities-payments-required-on-lease-liabilities-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="StrategicCooperationAgreementMember" id="cmdb_StrategicCooperationAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CargillInternationalSaCargillMember" id="cmdb_CargillInternationalSaCargillMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="FrameworkAgreementAndTheServicesAgreementMember" id="cmdb_FrameworkAgreementAndTheServicesAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CostamareIncMember" id="cmdb_CostamareIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="NeptuneMaritimeLeasingLimitedNMLMember" id="cmdb_NeptuneMaritimeLeasingLimitedNMLMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="LocalAgencyALocalAgencyBLocalAgencyCAndLocalAgencyDMember" id="cmdb_LocalAgencyALocalAgencyBLocalAgencyCAndLocalAgencyDMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="LocalAgenciesABAndDMember" id="cmdb_LocalAgenciesABAndDMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CostamareShippingCompanySACostamareShippingAndCostamareShippingServicesLtdCostamareServicesMember" id="cmdb_CostamareShippingCompanySACostamareShippingAndCostamareShippingServicesLtdCostamareServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CostamareShippingServicesLtdCostamareServicesMember" id="cmdb_CostamareShippingServicesLtdCostamareServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CharteringinVesselsActivityMember" id="cmdb_CharteringinVesselsActivityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AgencyAgreementsMember" id="cmdb_AgencyAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="LoanAgreementsMember" id="cmdb_LoanAgreementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CostamareBulkersServicesPteLtdLocalAgencyCMember" id="cmdb_CostamareBulkersServicesPteLtdLocalAgencyCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AgreementTerminationFeeFactorOfAggregateFees" id="cmdb_AgreementTerminationFeeFactorOfAggregateFees" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="WorkingCapitalSecurityCurrent" id="cmdb_WorkingCapitalSecurityCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="AgreementSubsequentTermForTermination" id="cmdb_AgreementSubsequentTermForTermination" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="QuarterlyFeeToRelatedParties" id="cmdb_QuarterlyFeeToRelatedParties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="WorkingCapitalSecurityPerVessel" id="cmdb_WorkingCapitalSecurityPerVessel" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="VoyageExpensesRelatedParties" id="cmdb_VoyageExpensesRelatedParties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="WorkingCapitalSecurityNoncurrent" id="cmdb_WorkingCapitalSecurityNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="AgreementTermForTermination" id="cmdb_AgreementTermForTermination" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfLoanAgreements" id="cmdb_NumberOfLoanAgreements" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="WorkingCapitalSecurity" id="cmdb_WorkingCapitalSecurity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="QuarterlyFeeToRelatedPartiesShares" id="cmdb_QuarterlyFeeToRelatedPartiesShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="FairValueOfSharesIssuedToManager" id="cmdb_FairValueOfSharesIssuedToManager" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="ManagementFeesRelatedParties" id="cmdb_ManagementFeesRelatedParties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="CommissionChargedOnCharterHireAgreements" id="cmdb_CommissionChargedOnCharterHireAgreements" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="AgreementTerminationFeeMinimum" id="cmdb_AgreementTerminationFeeMinimum" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="AgreementTerminationAdvanceNoticePeriod" id="cmdb_AgreementTerminationAdvanceNoticePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="ManagementFeePerDayPeriodFollowingSale" id="cmdb_ManagementFeePerDayPeriodFollowingSale" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NavilandsBulkerManagementLtdNavilandsMember" id="cmdb_NavilandsBulkerManagementLtdNavilandsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AmountsPaidToThirdPartyManagers" id="cmdb_AmountsPaidToThirdPartyManagers" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="OfficersCompensationChargedPeriodEnd" id="cmdb_OfficersCompensationChargedPeriodEnd" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="ManagementFeePerDayPerVesselUnderBareboatCharter" id="cmdb_ManagementFeePerDayPerVesselUnderBareboatCharter" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="NavilandsBulkerManagementLtdNavilandsAndNavilandsShanghaiBulkersManagementLtdNavilandsShanghaiMember" id="cmdb_NavilandsBulkerManagementLtdNavilandsAndNavilandsShanghaiBulkersManagementLtdNavilandsShanghaiMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ManagementFeePerDayPerVessel" id="cmdb_ManagementFeePerDayPerVessel" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="MarkupForCosts" id="cmdb_MarkupForCosts" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfHandysizeBulkersSold" id="cmdb_NumberOfHandysizeBulkersSold" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="ConstructionSupervisoryFee" id="cmdb_ConstructionSupervisoryFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="CostamareShippingCompanySaCostamareShippingMember" id="cmdb_CostamareShippingCompanySaCostamareShippingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AcquisitionByThirdPartiesMember" id="cmdb_AcquisitionByThirdPartiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CertainOfTheCostamaresSubsidiariesCostamareCmdbAndCbsiMember" id="cmdb_CertainOfTheCostamaresSubsidiariesCostamareCmdbAndCbsiMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="DebtInstrumentNumberOfInstallments" id="cmdb_DebtInstrumentNumberOfInstallments" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="TermLoanValueMaintenanceClauses" id="cmdb_TermLoanValueMaintenanceClauses" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="DebtInstrumentNumberOfTranches" id="cmdb_DebtInstrumentNumberOfTranches" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="LoansPayableTrancheBMember" id="cmdb_LoansPayableTrancheBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="LoansPayableTrancheAMember" id="cmdb_LoansPayableTrancheAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-10-commitments-and-contingencies-schedule-of-time-charter-arrangements-details" id="cmdb_statement-statement-note-10-commitments-and-contingencies-schedule-of-time-charter-arrangements-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-16-derivatives-tables" id="cmdb_statement-statement-note-16-derivatives-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ScheduleOfDerivativesNotDesignatedAsHedgingInstrumentsUnderAsc815TableTextBlock" id="cmdb_ScheduleOfDerivativesNotDesignatedAsHedgingInstrumentsUnderAsc815TableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-16-derivatives-derivatives-by-type-details" id="cmdb_statement-statement-note-16-derivatives-derivatives-by-type-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="DerivativeLiabilitySubjectToMasterNettingArrangementAfterOffsetAndDeductionNoncurrent" id="cmdb_DerivativeLiabilitySubjectToMasterNettingArrangementAfterOffsetAndDeductionNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="DerivativeLiabilitySubjectToMasterNettingArrangementDeductionOfFinancialInstrumentNotOffsetCurrent" id="cmdb_DerivativeLiabilitySubjectToMasterNettingArrangementDeductionOfFinancialInstrumentNotOffsetCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="DerivativeAssetSubjectToMasterNettingArrangementAfterOffsetAndDeductionNoncurrent" id="cmdb_DerivativeAssetSubjectToMasterNettingArrangementAfterOffsetAndDeductionNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="DerivativeAssetSubjectToMasterNettingArrangementBeforeOffsetNoncurrent" id="cmdb_DerivativeAssetSubjectToMasterNettingArrangementBeforeOffsetNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="DerivativeLiabilitySubjectToMasterNettingArrangementAfterOffsetAndDeductionCurrent" id="cmdb_DerivativeLiabilitySubjectToMasterNettingArrangementAfterOffsetAndDeductionCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="DerivativeAssetSubjectToMasterNettingArrangementAfterOffsetAndDeductionCurrent" id="cmdb_DerivativeAssetSubjectToMasterNettingArrangementAfterOffsetAndDeductionCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="DerivativeAssetSubjectToMasterNettingArrangementBeforeOffsetCurrent" id="cmdb_DerivativeAssetSubjectToMasterNettingArrangementBeforeOffsetCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="DerivativeLiabilitySubjectToMasterNettingArrangementDeductionOfFinancialInstrumentNotOffsetNoncurrent" id="cmdb_DerivativeLiabilitySubjectToMasterNettingArrangementDeductionOfFinancialInstrumentNotOffsetNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="DerivativeLiabilitySubjectToMasterNettingArrangementBeforeOffsetNoncurrent" id="cmdb_DerivativeLiabilitySubjectToMasterNettingArrangementBeforeOffsetNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="BunkerSwapAgreements2Member" id="cmdb_BunkerSwapAgreements2Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="DerivativeAssetSubjectToMasterNettingArrangementDeductionOfFinancialInstrumentNotOffsetNoncurrent" id="cmdb_DerivativeAssetSubjectToMasterNettingArrangementDeductionOfFinancialInstrumentNotOffsetNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="DerivativeAssetSubjectToMasterNettingArrangementDeductionOfFinancialInstrumentNotOffsetCurrent" id="cmdb_DerivativeAssetSubjectToMasterNettingArrangementDeductionOfFinancialInstrumentNotOffsetCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="DerivativeLiabilitySubjectToMasterNettingArrangementBeforeOffsetCurrent" id="cmdb_DerivativeLiabilitySubjectToMasterNettingArrangementBeforeOffsetCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="statement-statement-note-13-derivatives-tables" id="cmdb_statement-statement-note-13-derivatives-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ScheduleOfDerivativesInAsc815CashFlowHedgingRelationshipsTableTextBlock" id="cmdb_ScheduleOfDerivativesInAsc815CashFlowHedgingRelationshipsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="CommonStockNumberOfEntities" id="cmdb_CommonStockNumberOfEntities" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="AmorotoEtAlLoanAgreementEntered2022Member" id="cmdb_AmorotoEtAlLoanAgreementEntered2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AdstoneMarineCorpEtAlLoanAgreementEntered2022Member" id="cmdb_AdstoneMarineCorpEtAlLoanAgreementEntered2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="BernisMarineCorpEtAlLoanAgreementEntered2021Member" id="cmdb_BernisMarineCorpEtAlLoanAgreementEntered2021Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CostamareLoanAgreementEntered2021Member" id="cmdb_CostamareLoanAgreementEntered2021Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CostamareLoanAgreementEntered2023Member" id="cmdb_CostamareLoanAgreementEntered2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="BermondiMarineCorpEtAlLoanAgreementEntered2024Member" id="cmdb_BermondiMarineCorpEtAlLoanAgreementEntered2024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AmorotoEtAlLoanAgreementEntered2021Member" id="cmdb_AmorotoEtAlLoanAgreementEntered2021Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="BarlestoneMarineCorpEtAlLoanAgreementEntered2023Member" id="cmdb_BarlestoneMarineCorpEtAlLoanAgreementEntered2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="LoansPayableTrancheCMember" id="cmdb_LoansPayableTrancheCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="GrenetaMarineCorpEtAlLoanAgreementEntered2022Member" id="cmdb_GrenetaMarineCorpEtAlLoanAgreementEntered2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="VoyageRevenuesTextBlock" id="cmdb_VoyageRevenuesTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="CapitalizationAtSpinoffIncludingIssuanceOfCommonStockShares" id="cmdb_CapitalizationAtSpinoffIncludingIssuanceOfCommonStockShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-14-financial-instruments-fair-value-of-assets-and-liabilities-details" id="cmdb_statement-statement-note-14-financial-instruments-fair-value-of-assets-and-liabilities-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-10-voyage-revenues-tables" id="cmdb_statement-statement-note-10-voyage-revenues-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ScheduleOfVoyageRevenuesTableTextBlock" id="cmdb_ScheduleOfVoyageRevenuesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-10-voyage-revenues-schedule-of-voyage-revenues-details" id="cmdb_statement-statement-note-10-voyage-revenues-schedule-of-voyage-revenues-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="VoyageChartersAndContractsOfAffreightmentMember" id="cmdb_VoyageChartersAndContractsOfAffreightmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="TimeChartersMember" id="cmdb_TimeChartersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="VoyageChartersMember" id="cmdb_VoyageChartersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-13-derivatives-derivatives-by-type-details" id="cmdb_statement-statement-note-13-derivatives-derivatives-by-type-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-16-derivatives-derivatives-not-designated-as-hedging-instruments-and-ineffectiveness-of-hedging-instruments-details" id="cmdb_statement-statement-note-16-derivatives-derivatives-not-designated-as-hedging-instruments-and-ineffectiveness-of-hedging-instruments-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="TwoDryBulkVesselsMember" id="cmdb_TwoDryBulkVesselsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="OneDryBulkVesselMember" id="cmdb_OneDryBulkVesselMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ResourceMember" id="cmdb_ResourceMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="KonstantinosAndProgressMember" id="cmdb_KonstantinosAndProgressMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="PreferredStockVotingRightsNumber" id="cmdb_PreferredStockVotingRightsNumber" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="ChiefCommercialOfficerMember" id="cmdb_ChiefCommercialOfficerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="MembersOfTheKonstantakopoulosFamilyMember" id="cmdb_MembersOfTheKonstantakopoulosFamilyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CharterinArrangementsTextBlock" id="cmdb_CharterinArrangementsTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-13-derivatives-derivatives-not-designated-as-hedging-instruments-and-ineffectiveness-of-hedging-instruments-details" id="cmdb_statement-statement-note-13-derivatives-derivatives-not-designated-as-hedging-instruments-and-ineffectiveness-of-hedging-instruments-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-13-derivatives-effect-of-derivative-instruments-details" id="cmdb_statement-statement-note-13-derivatives-effect-of-derivative-instruments-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="OtherComprehensiveIncomeLossDerivativeEffectivePortionOfChangesInFairValueNet" id="cmdb_OtherComprehensiveIncomeLossDerivativeEffectivePortionOfChangesInFairValueNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="PeriodUsedForEstimatedTimeCharterRate" id="cmdb_PeriodUsedForEstimatedTimeCharterRate" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfCharteredinVessels" id="cmdb_NumberOfCharteredinVessels" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="EstimatedScrapRatePerLightweightTon" id="cmdb_EstimatedScrapRatePerLightweightTon" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfVesselsHeldforsale" id="cmdb_NumberOfVesselsHeldforsale" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="HistoricalPeriodUsedForAverageEstimatedDailyTimeCharterRate" id="cmdb_HistoricalPeriodUsedForAverageEstimatedDailyTimeCharterRate" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="ExpectedIncreaseInExpensesPeriod" id="cmdb_ExpectedIncreaseInExpensesPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="VesselsImpairmentLoss" id="cmdb_VesselsImpairmentLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="DryBulkVesselsMember" id="cmdb_DryBulkVesselsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ExpectedIncreaseInExpensesPercentage" id="cmdb_ExpectedIncreaseInExpensesPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfSubsidiaries" id="cmdb_NumberOfSubsidiaries" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="CostamareBulkersShipsIncCBSIMember" id="cmdb_CostamareBulkersShipsIncCBSIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="NumberOfControlledCompaniesDryBulkVesselsTobeacquired" id="cmdb_NumberOfControlledCompaniesDryBulkVesselsTobeacquired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfAdditionalSupramaxVesselsChartered" id="cmdb_NumberOfAdditionalSupramaxVesselsChartered" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="CharterPeriod" id="cmdb_CharterPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfControlledCompaniesDryBulkVesselsOwned" id="cmdb_NumberOfControlledCompaniesDryBulkVesselsOwned" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="CostamareBulkersIncCBIMember" id="cmdb_CostamareBulkersIncCBIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="NumberOfDryBulkVessels" id="cmdb_NumberOfDryBulkVessels" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfControlledCompanies" id="cmdb_NumberOfControlledCompanies" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfParentCompanySharesPerSubsidiaryShare" id="cmdb_NumberOfParentCompanySharesPerSubsidiaryShare" type="xbrli:pureItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfControlledCompaniesDryBulkVesselsPreviouslyOwnedOrTobesold" id="cmdb_NumberOfControlledCompaniesDryBulkVesselsPreviouslyOwnedOrTobesold" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfCharteredinVesselsNotTransferred" id="cmdb_NumberOfCharteredinVesselsNotTransferred" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="RelatedPartyPercentageOfOutstandingShares" id="cmdb_RelatedPartyPercentageOfOutstandingShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="statement-statement-note-13-total-voyage-revenues-tables" id="cmdb_statement-statement-note-13-total-voyage-revenues-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ChartinHireExpenses" id="cmdb_ChartinHireExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="NumberOfVesselsCharteredinDuringPeriod" id="cmdb_NumberOfVesselsCharteredinDuringPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-13-total-voyage-revenues-schedule-of-voyage-revenues-details" id="cmdb_statement-statement-note-13-total-voyage-revenues-schedule-of-voyage-revenues-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-7-longterm-debt-schedule-of-longterm-debt-1-details" id="cmdb_statement-statement-note-7-longterm-debt-schedule-of-longterm-debt-1-details" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-5-vessels-net-tables" id="cmdb_statement-statement-note-5-vessels-net-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="ScheduleOfVesselsAndAdvancesNetTableTextBlock" id="cmdb_ScheduleOfVesselsAndAdvancesNetTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-1-tables" id="cmdb_statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-1-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsTableTextBlock" id="cmdb_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-tables" id="cmdb_statement-statement-note-2-significant-accounting-policies-and-recent-accounting-pronouncements-tables" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="NumberOfCharteredinVesselsOnATimeCharterTrip" id="cmdb_NumberOfCharteredinVesselsOnATimeCharterTrip" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" />
  <xs:element name="NumberOfVesselsAcquiredDuringPeriod" id="cmdb_NumberOfVesselsAcquiredDuringPeriod" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="NumberOfVesselsImpaired" id="cmdb_NumberOfVesselsImpaired" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="MiracleProsperFrontierMagnesAlwineAndAugustMember" id="cmdb_MiracleProsperFrontierMagnesAlwineAndAugustMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="MinerTaiboComityPeacePrideAndCetusMember" id="cmdb_MinerTaiboComityPeacePrideAndCetusMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="AllianceMeridaPegasusOracleTitanIAndDiscoveryMember" id="cmdb_AllianceMeridaPegasusOracleTitanIAndDiscoveryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
</xs:schema>
