<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-05-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000075208</issuerCik>
        <issuerName>OVERSEAS SHIPHOLDING GROUP INC</issuerName>
        <issuerTradingSymbol>OSG</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001166564</rptOwnerCik>
            <rptOwnerName>CYRUS CAPITAL PARTNERS, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>65 EAST 55 STREET</rptOwnerStreet1>
            <rptOwnerStreet2>35TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001251783</rptOwnerCik>
            <rptOwnerName>FREIDHEIM STEPHEN C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CYRUS CAPITAL PARTNERS, L.P.</rptOwnerStreet1>
            <rptOwnerStreet2>399 PARK AVENUE, 39TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001166774</rptOwnerCik>
            <rptOwnerName>CYRUS CAPITAL PARTNERS GP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>399 PARK AVENUE, 39TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Common Stock, par value $0.01</value>
            </securityTitle>
            <transactionDate>
                <value>2020-05-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>37800</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>187918</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Class A Common Stock, par value $0.01</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>17965341</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">These 37,800 shares of restricted Class A Common Stock were granted to Cyrus Capital Partners LP (&quot;CCP&quot;) by the Issuer on May 28, 2020 pursuant to the Issuer's Non-Employee Director Incentive Compensation Plan and vest on May 28, 2021. Mr. Joseph Kronsberg is an employee of CCP and sits on the board of directors of the Issuer as a representative of CCP. The grant was made directly to CCP because pursuant to agreements between CCP and Mr. Kronsberg, CCP is required to receive all compensation in connection with Mr. Kronsberg's directorship.</footnote>
        <footnote id="F2">The securities reported herein are held directly by: (i) Cyrus Polaris LLC, (ii) Cyrus Polaris II LLC, (iii) CYR Fund, L.P., (iv) Crescent 1, L.P. and (v) Cyrus Canary Fund, L.P (collectively, the &quot;Cyrus Funds&quot;). Cyrus Capital Partners, L.P (&quot;CCP&quot;) serves as the investment manager to the Cyrus Funds. Cyrus Capital Partners GP, L.L.C. (&quot;CCPGP&quot;) serves as the general partner of CCP. Stephen C. Freidheim serves as the principal of both CCP and CCPGP. All discretion over the investment activities of the Cyrus Funds has been delegated to CCP. Each of the Reporting Persons disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein, if any.</footnote>
    </footnotes>

    <remarks>Mr. Kronsberg serves on the Board of Directors of the Issuer as a representative of CCP. Accordingly, CCP, CCPGP and Mr. Freidheim are directors by deputization by virtue of the fact that Mr. Kronsberg currently sits on the board of directors of the Issuer.</remarks>

    <ownerSignature>
        <signatureName>/s/ Cyrus Capital Partners, L.P., By: /s/ Jennifer M. Pulick, Name: Jennifer M. Pulick, Title: Authorized Signatory</signatureName>
        <signatureDate>2020-06-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Cyrus Capital Partners GP, L.L.C., By: /s/ Stephen C. Freidheim, Name: Stephen C. Freidheim, Title: Manager</signatureName>
        <signatureDate>2020-06-01</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ Stephen C. Freidheim</signatureName>
        <signatureDate>2020-06-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
