<?xml version="1.0" encoding="UTF-8"?>
<!--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>2026-10-21</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>2026-10-21</xbrli:startDate><xbrli:endDate>2026-10-21</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>2026-10-21</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>2026-10-21</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">2026-10-21</in-capmkt:DateOfOccurrenceOfEventOrInformation><in-capmkt:TimeOfOccurrenceOfEventOrInformation contextRef="MainI">16:33:00</in-capmkt:TimeOfOccurrenceOfEventOrInformation><in-capmkt:DateOfReport contextRef="MainI">2026-10-21</in-capmkt:DateOfReport><in-capmkt:TypeOfExecutionOfAgreement contextRef="MainI">Others</in-capmkt:TypeOfExecutionOfAgreement><in-capmkt:DetailsOfOtherTypeOfExecutionOfAgreement contextRef="MainI">Contract Agreement</in-capmkt:DetailsOfOtherTypeOfExecutionOfAgreement><in-capmkt:DetailsOfExecutionOfAgreement contextRef="MainI">Contract between SEAMEC LIMITED and HAL OFFSHORE LIMITED</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">HAL OFFSHORE LIMITED</in-capmkt:NameOfPartiesOrCounterPartiesOfTheAgreement><in-capmkt:NatureOfThePartiesOfTheAgreement contextRef="I_PartiesOfTheAgreement1">Counterparties to the agreement</in-capmkt:NatureOfThePartiesOfTheAgreement><in-capmkt:DetailsOfShareholdingInTheEntityWithWhomTheAgreementIsExecuted contextRef="I_PartiesOfTheAgreement1">0</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">true</in-capmkt:WhetherThePartiesToTheAgreementAreRelatedToPromoterOrPromoterGroupOrAssociateOrHoldingOrSubsidiaryOrGroupCompaniesOrDirectorOrKMPAndItsRelativesInAnyManner><in-capmkt:NatureOfRelationshipOfTheAgreement contextRef="I_PartiesOfTheAgreement1">HAL Offshore Limited is the Holding Company of Seamec Limited</in-capmkt:NatureOfRelationshipOfTheAgreement><in-capmkt:WhetherTheAgreementWouldFallWithinRelatedPartyTransactions contextRef="MainI">true</in-capmkt:WhetherTheAgreementWouldFallWithinRelatedPartyTransactions><in-capmkt:WhetherTheAgreementIsDoneAtArmsLength contextRef="MainI">true</in-capmkt:WhetherTheAgreementIsDoneAtArmsLength><in-capmkt:PurposeOfEnteringIntoTheAgreement contextRef="MainI">Charter Hire of Vessel “SEAMEC ANANT” for charter hire of Vessel SEAMEC ANANT for deployment with Oil and Natural Gas Corporation (ONGC) IMR jobs. The charter hire period is for approximately 1225 days, subject to HAL’s Charter Hire Agreement with ONGC.</in-capmkt:PurposeOfEnteringIntoTheAgreement><in-capmkt:SizeOfAgreement contextRef="MainI">USD 55 million exclusive 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>
