-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 IJvHjFifuGOgey/VfH0+Z/rhZnaN/+qjrYDWW+/b3WsSYyws7XpC9HsHjk7ZBU0q
 QhzFkS5BKVZVyzjsMLtdEA==

<SEC-DOCUMENT>0001140361-11-003124.txt : 20110118
<SEC-HEADER>0001140361-11-003124.hdr.sgml : 20110117
<ACCEPTANCE-DATETIME>20110118114331
ACCESSION NUMBER:		0001140361-11-003124
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20110114
FILED AS OF DATE:		20110118
DATE AS OF CHANGE:		20110118

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			McNamara James J
		CENTRAL INDEX KEY:			0001442769

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10852
		FILM NUMBER:		11532365

	MAIL ADDRESS:	
		STREET 1:		C/O INTERNATIONAL SHIPHOLDING CORP
		STREET 2:		11 NORTH WATER STREET / SUITE 18290
		CITY:			MOBILE
		STATE:			AL
		ZIP:			36602

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTERNATIONAL SHIPHOLDING CORP
		CENTRAL INDEX KEY:			0000278041
		STANDARD INDUSTRIAL CLASSIFICATION:	DEEP SEA FOREIGN TRANSPORTATION OF FREIGHT [4412]
		IRS NUMBER:				362989662
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1028

	BUSINESS ADDRESS:	
		STREET 1:		11 NORTH WATER STREET
		STREET 2:		SUITE # 18290
		CITY:			MOBILE
		STATE:			AL
		ZIP:			36602
		BUSINESS PHONE:		2512439100

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 2004
		CITY:			MOBILE
		STATE:			AL
		ZIP:			36652
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-01-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000278041</issuerCik>
        <issuerName>INTERNATIONAL SHIPHOLDING CORP</issuerName>
        <issuerTradingSymbol>ISH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001442769</rptOwnerCik>
            <rptOwnerName>McNamara James J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11 NORTH WATER ST.</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 18290</rptOwnerStreet2>
            <rptOwnerCity>MOBILE</rptOwnerCity>
            <rptOwnerState>AL</rptOwnerState>
            <rptOwnerZipCode>36602</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2011-01-14</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>739</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>27.09</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1039</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Represents other stock awards the reporting person received from the Company.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ James J. McNamara</signatureName>
        <signatureDate>2011-01-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----