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<!--REG30PARAB V1.0 (01-06-2026)-->
<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2026-04-30/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Regulation_30_Para_B_Of_Part_A_Of_Schedule_III/2026-04-30/in-capmkt/in-capmkt-ent" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2026-04-30/in-capmkt-types" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xl="http://www.w3.org/1999/xlink"><link:schemaRef xlink:type="simple" xlink:href="in-capmkt-ent-2026-04-30.xsd"/><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">526807</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-07-15</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="MainD"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">526807</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-07-15</xbrli:startDate><xbrli:endDate>2026-07-15</xbrli:endDate></xbrli:period></xbrli:context><xbrli:context id="I_ExecutionOfAgreement"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">526807</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-07-15</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIIIAxis">in-capmkt:ExecutionOfAgreementMember</xbrldi:explicitMember></xbrli:scenario></xbrli:context><xbrli:context id="I_PartiesOfTheAgreement1"><xbrli:entity><xbrli:identifier scheme="http://www.sebi.gov.in/in-capmkt/ScripCode">526807</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-07-15</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:PartiesOfTheAgreementAxis"><in-capmkt:PartiesOfTheAgreementDomain>PartiesOfTheAgreementDomain1</in-capmkt:PartiesOfTheAgreementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:unit id="shares"><xbrli:measure>xbrli:shares</xbrli:measure></xbrli:unit><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><in-capmkt:NSESymbol contextRef="MainI">SEAMECLTD</in-capmkt:NSESymbol><in-capmkt:NameOfTheCompany contextRef="MainI">Seamec Limited</in-capmkt:NameOfTheCompany><in-capmkt:ScripCode contextRef="MainI">526807</in-capmkt:ScripCode><in-capmkt:MSEISymbol contextRef="MainI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="MainI">INE497B01018</in-capmkt:ISIN><in-capmkt:TypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="MainI">Agreements (Sub-para 5-Para B)</in-capmkt:TypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="I_ExecutionOfAgreement">Execution of agreement</in-capmkt:SubTypeOfEventAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:TypeOfAnnouncementAsPerRegulation30ParaBOfPartAOfScheduleIII contextRef="MainI">New</in-capmkt:TypeOfAnnouncementAsPerRegulation30ParaBOfPartAOfScheduleIII><in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting contextRef="MainI">false</in-capmkt:WhetherEventOrInformationDisclosedIsAnOutcomeOfTheBoardMeeting><in-capmkt:DateOfOccurrenceOfEventOrInformation contextRef="MainI">2026-07-15</in-capmkt:DateOfOccurrenceOfEventOrInformation><in-capmkt:TimeOfOccurrenceOfEventOrInformation contextRef="MainI">08:09:00</in-capmkt:TimeOfOccurrenceOfEventOrInformation><in-capmkt:DateOfReport contextRef="MainI">2026-07-15</in-capmkt:DateOfReport><in-capmkt:TypeOfExecutionOfAgreement contextRef="MainI">Others</in-capmkt:TypeOfExecutionOfAgreement><in-capmkt:DetailsOfOtherTypeOfExecutionOfAgreement contextRef="MainI">Bimco Charter Party Agreement dated 14th July 2026</in-capmkt:DetailsOfOtherTypeOfExecutionOfAgreement><in-capmkt:DetailsOfExecutionOfAgreement contextRef="MainI">Agreement entered between Seamec Limited and Lamprell Energy Limited, countersigned by Seamec Limited on 15th July 2026 at 08:09 am.</in-capmkt:DetailsOfExecutionOfAgreement><in-capmkt:WhetherProposedOrExecutedAgreementIsInNormalCourseOfBusiness contextRef="MainI">true</in-capmkt:WhetherProposedOrExecutedAgreementIsInNormalCourseOfBusiness><in-capmkt:NumberOfPartiesToTheAgreement contextRef="MainD" unitRef="pure" decimals="0">1</in-capmkt:NumberOfPartiesToTheAgreement><in-capmkt:NameOfPartiesOrCounterPartiesOfTheAgreement contextRef="I_PartiesOfTheAgreement1">Lamprell Energy Limited</in-capmkt:NameOfPartiesOrCounterPartiesOfTheAgreement><in-capmkt:NatureOfThePartiesOfTheAgreement contextRef="I_PartiesOfTheAgreement1">Counterparties to the agreement</in-capmkt:NatureOfThePartiesOfTheAgreement><in-capmkt:DetailsOfShareholdingInTheEntityWithWhomTheAgreementIsExecuted contextRef="I_PartiesOfTheAgreement1">NA</in-capmkt:DetailsOfShareholdingInTheEntityWithWhomTheAgreementIsExecuted><in-capmkt:NumberOfSharesOfPartyOfTheAgreement contextRef="I_PartiesOfTheAgreement1" unitRef="shares" decimals="INF">0</in-capmkt:NumberOfSharesOfPartyOfTheAgreement><in-capmkt:PercentageOfShareholdingOfPartyOfTheAgreement contextRef="I_PartiesOfTheAgreement1" unitRef="pure" decimals="INF">0</in-capmkt:PercentageOfShareholdingOfPartyOfTheAgreement><in-capmkt:WhetherThePartiesToTheAgreementAreRelatedToPromoterOrPromoterGroupOrAssociateOrHoldingOrSubsidiaryOrGroupCompaniesOrDirectorOrKMPAndItsRelativesInAnyManner contextRef="I_PartiesOfTheAgreement1">false</in-capmkt:WhetherThePartiesToTheAgreementAreRelatedToPromoterOrPromoterGroupOrAssociateOrHoldingOrSubsidiaryOrGroupCompaniesOrDirectorOrKMPAndItsRelativesInAnyManner><in-capmkt:WhetherTheAgreementWouldFallWithinRelatedPartyTransactions contextRef="MainI">false</in-capmkt:WhetherTheAgreementWouldFallWithinRelatedPartyTransactions><in-capmkt:DetailsOfTheAgreementIsNotDoneAtArmsLength contextRef="MainI">Lamprell Energy Limited is not related to the Company in any manner and the Bimco Charter Party entered into between the Parties do not fall within Related Party Transaction.</in-capmkt:DetailsOfTheAgreementIsNotDoneAtArmsLength><in-capmkt:PurposeOfEnteringIntoTheAgreement contextRef="MainI">Charter Hire of Company's Barge “SEAMEC GLORIOUS” for working in Mumbai High &amp; West Coast Offshore including Daman Oilfield for carrying out jobs related to offshore accommodation and hook-up work barge &amp; Support for Project of Oil and Natural Gas Corporation Limited (ONGC) for firm period of 180 days with option for extension. The charter to commence within the window period of 15th October 2026 to 31st  October 2026.</in-capmkt:PurposeOfEnteringIntoTheAgreement><in-capmkt:SizeOfAgreement contextRef="MainI">USD 5.21 million inclusive of GST</in-capmkt:SizeOfAgreement><in-capmkt:SignificantTermsOfTheAgreementInBriefSpecialRightsLikeRightToAppointDirectorsOrFirstRightToShareSubscriptionInCaseOfIssuanceOfSharesOrRightToRestrictAnyChangeInCapitalStructure contextRef="MainI">NA</in-capmkt:SignificantTermsOfTheAgreementInBriefSpecialRightsLikeRightToAppointDirectorsOrFirstRightToShareSubscriptionInCaseOfIssuanceOfSharesOrRightToRestrictAnyChangeInCapitalStructure><in-capmkt:WhetherThereIsAnyIssuanceOrTransferOfSharesToTheParties contextRef="MainI">false</in-capmkt:WhetherThereIsAnyIssuanceOrTransferOfSharesToTheParties></xbrli:xbrl>
