ISO-TR 9814 2025.docx

TechnicalReportISO/TR9814Firstedition2025-06Shipsandmarinetechnology一GoodpracticesofpreventingcapsizingduringturningofshipswithlargeprofileheightNaviresettechnologiemaritimeBonnespratiquesdepreventionduChavirementIorsduviragedesnaviresagrandehauteurdeprofilReferencenumberISO/TR9814:2025(en)COPYRIGHTPROTECTEDDOCUMENT©ISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordivIntroductionv2 Normativereferences13 Termsanddefinitions14 Abbreviatedterms25 Analysisofcapsizeaccidentsoffiveships35.1 General35.2 Shipcategoriesbasedoncargospacerequirements45.2.1 Weightcarrier45.2.2 Volumecarrier45.2.3 Areacarrier45.3 Analysisofcapsizeaccidents45.3.1 General45.3.2 Similarities45.3.3 Differences56 EffectofKGontheGZcurve56.1 KGanditsroleincapsizingaccidents56.2 CharacteristicsofhullformandGZcurves96.2.1 General96.2.2 HullformswithtwoinflectionpointsalongtheGZcurve97 Threegoodpracticestopreventcapsizingduringturningofships107.1 General107.2 Semi-automaticincliningtestsbeforeloadeddeparture107.2.1 General107.2.2 Featuresofincliningtestbeforedeparture117.2.3 Stabilityscreeningwithoutincliningtest127.3 Maximumheelinganglewhileturning147.3.1 General147.3.2 Maritimeautonomoussurfaceships157.3.3 Considerationsoncargoslippage167.4 Precisecalculationoffreesurfacemoment(FSM)177.4.1 SlacklimitofNAPAsoftware177.4.2 FSMat98%fillinglevel177.4.3 Improvementofstabilitycalculationsoftware18Annex A (informative)Casesofcapsizingaccidents19Annex B (informative)Additionalinformationonshipfeatures28Bibliography30ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seeWWW.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.However,implementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatWWW.iso.org/patents.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISO'sadherencetotheWorldTradeOrganization(WTo)principlesintheTechnicalBarrierstoTrade(TBT),seewww.iso.org/iso/foreword.htmLThisdocumentispreparedbyTechnicalCommitteeISO/TC8,Shipsandmarinetechnology,SubcommitteeSC8,Shipdesign.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheuser'snationalstandardsbody.AcompletelistingofthesebodiescanbefoundatWWW.iso.org/membershtmLIntroductionTherearemanysimilaritiesbetweenthefollowingshipaccidents:theGoldenRayin2019,theHoeghOsakain2015,theSewolferryin2014,theCrownPrincessin2006andtheQueenHindin2019.Bycomparingandanalysingthecausesofthesefiveaccidents,identifyingsimilaritiesbetweenthem,andgeneralizingthefindings,thisdocumentaimstohelppreventsimilaraccidentsfromoccurringinthefuture.Basedontheanalysisofthefiveshipaccidentsandasimilarlandtruckaccident,thisdocumentdescribesthreegoodpracticestopreventsimilaraccidentsfromrecurring.Sincesimilaraccidentscanoccurnotonlyinoldshipsbutalsointhenewships,additionalmeasuresaredescribed,assimilaraccidentscanoccuragainunlessthesepointsarecorrected.ShipsandmarinetechnologyGoodpracticesofpreventingcapsizingduringturningofshipswithlargeprofileheight1 Scope