2026年海船船员考试航海英语题库

2026年海船船员考试航海英语题库1.AccordingtotheInternationalConventionfortheSafetyofLifeatSea(SOLAS),whichofthefollowingstatementsregardingthecarriageofgrainiscorrect?A.Grainshallbetrimmedsothatthesurfaceislevel.B.Theangleofreposeofgrainisnotafactorinstabilitycalculations.C.Securingequipmentisneverrequirediftheshipisequippedwithself-trimmingholds.D.Themasterisnotrequiredtodocumentthegrainloadingplan.Answer:AAnalysis:SOLASChapterVIandtheInternationalGrainCoderequirethatgrainbetrimmedtolevelthesurfacetominimizeshifting,whichaffectstheship'sstability.Theangleofreposeiscritical,securingequipmentisoftenneeded,andthemastermustapproveanddocumenttheloadingplan.2.InthecontextoftheInternationalRegulationsforPreventingCollisionsatSea(COLREGs),whatisthedefinitionofa"vesselrestrictedinherabilitytomaneuver"?A.Avesselengagedinfishingoperations.B.AvesselwhichfromthenatureofherworkisrestrictedinherabilitytomaneuverasrequiredbytheRulesandisunabletokeepoutofthewayofanothervessel.C.Avesselnotundercommand.D.Avesselconstrainedbyherdraft.Answer:BAnalysis:AccordingtoRule3(g),avesselrestrictedinherabilitytomaneuverisdefinedasonewhich,duetothenatureofherwork,cannotmaneuverasrequiredbytheRulesandcannotkeepoutoftheway.Thisdistinguishesherfromvesselsnotundercommandorconstrainedbydraft.3.Wheninterpretingasynopticchart,thesymbol"Ts"typicallyindicates:A.TropicalStormB.TemperatureoftheseasurfaceC.ThunderstormD.TradeWindsAnswer:AAnalysis:Inmeteorologicalchartanalysis,"Ts"istheabbreviationforaTropicalStorm,aspecificstageinthedevelopmentofatropicalcyclone.4.WhichofthefollowingECDISalarmsrequiresimmediateattentiontoensuresafetyofnavigation?A.PositionFixLossB.ScaleOverzoomC.RouteCrossTrackErrorExceededD.AlloftheaboveAnswer:DAnalysis:While"PositionFixLoss"iscritical,"RouteCrossTrackErrorExceeded"indicatesthevesselisdeviatingfromtheplannedtrack,potentiallyleadingtogrounding."ScaleOverzoom"affectsdataresolution.Allaresafety-relevantalarmsthatmustbeacknowledged.5.Themaneuveringcharacteristicofavesselknownas"Advance"isdefinedas:A.Thedistancethevesselmovesalongheroriginalcourseafterthehelmisputover.B.Thedistancethevesselmovesperpendiculartoheroriginalcourse.C.Thedistancetraveledfromtheinstantthehelmisputoveruntilthevesselhasturned90degrees.D.Thefinalheadingchangeachieved.Answer:AAnalysis:"Advance"isthedistancethevesselmovesinthedirectionoftheoriginalcoursefromthemomentthehelmisputoveruntilthevesselreachesaspecifiedpoint(usuallywhentheheadinghaschanged90degrees)."Transfer"istheperpendiculardistance.6.AccordingtoMARPOLAnnexVI,theglobalsulphurcapforfueloilusedonboardships,unlessanexemptionapplies,is:A.3.50%m/mB.1.00%m/mC.0.50%m/mD.0.10%m/mAnswer:CAnalysis:AsofJanuary1,2020,theglobalsulphurlimitunderMARPOLAnnexVIwasreducedfrom3.50%to0.50%m/m(massbymass).7.Whenavesselisproceedingalonganarrowchannelandthesignal"oneprolongedblast"issounded,whatdoesthissignify?A.Iamalteringmycoursetostarboard.B.Iamalteringmycoursetoport.C.Iamapproachingabendwheretheviewisobstructed.D.Iamoperatingasternpropulsion.Answer:CAnalysis:Rule34(e)statesthatinornearanarrowchannelorfairway,avesselapproachingabendwhereanothervesselmaybeobscuredbyaninterveningobstructionshallsoundoneprolongedblast.8.The"CriticalPeriod"regardingthestabilityofavesselduringdrydockingrefersto:A.Themomenttheshipentersthedock.B.Themomenttheshiptouchestheblocks.C.Themomenttheship'sstabilityismostreducedduetotheriseofthecenterofgravity(G)asthewaterleveldrops.D.Themomenttheshipisundocked.Answer:CAnalysis:Asthewaterlevelfalls,theupwardforceatthekeel(P)increases.Thisreducesthedisplacementandeffectivelyraisesthevirtualcenterofgravity(GMdecreases),reachingacriticalpointbeforetheshiptakestheblocksoverall.9.InthecontextoftheIMDGCode,Class7covers:A.CorrosivesubstancesB.RadioactivematerialC.ExplosivesD.GasesandtoxicsubstancesAnswer:BAnalysis:TheInternationalMaritimeDangerousGoods(IMDG)CodeclassifiesRadioactiveMaterialasClass7.10.WhatistheprimaryfunctionoftheVesselTrafficService(VTS)?A.Toprovideweatherforecastsonly.B.Tomonitorshiptrafficandprovidenavigationalassistancetoenhancesafetyandefficiency.C.Totowvesselsindistress.D.Toconductcustomsinspections.Answer:BAnalysis:VTSisimplementedtoimprovethesafetyandefficiencyofnavigation,trafficorganization,andtheprotectionofthemarineenvironmentwithinaspecificservicearea.11.WhichofthefollowingstatementsabouttheAutomaticIdentificationSystem(AIS)iscorrect?A.ItoperatesonVHFchannel16only.B.Ittransmitsstaticdata,dynamicdata,andvoyage-relateddata.C.Itisamandatoryreplacementforradar.D.ItcannotbeusedforSAR(SearchandRescue)operations.Answer:BAnalysis:AIStransmitsthreetypesofinformation:Static(shipdetails),Dynamic(position,speed,course),andVoyage(draft,destination).ItusesdedicatedVHFchannels(AIS1and2),notCh16.12.Theterm"Squat"occurswhenavessel:A.Ismooredinatidalcurrent.B.Movesthroughshallowwater,causingadecreaseinunder-keelclearance.C.Experiencesexcessivelistduetocargoshift.D.Isdry-docked.Answer:BAnalysis:Squatisthebodilysinkageandchangeoftrimexperiencedbyavesselmovingthroughthewaterduetochangesinpressuredistribution,exacerbatedinshallowwater.13.WhenusingtheHorizontalSextantAngle(HSA)methodtofixaposition,theangleismeasured:A.Betweenthehorizonandacelestialbody.B.Betweentwoterrestrialobjects.C.Betweentheship'sheadandaterrestrialobject.D.Betweenthesunandthemoon.Answer:BAnalysis:HorizontalSextantAnglefixesinvolvemeasuringtheanglebetweenthreechartedobjectstoobtainapositioncircleintersection.14.AccordingtotheIAMSARManual,a"RapidResponse"searchpatternistypicallyusedwhen:A.Thedatumisuncertainandtheareaislarge.B.Thesearchobjectisknowntobeinaspecificlocationandimmediatecoverageisneeded.C.Thesurvivorsareinthewater.D.Thesearchfacilitiesareaircraftonly.Answer:BAnalysis:Rapidresponsepatternsareoftenemployedwhenthetargetlocationisrelativelywell-definedandaquickscanoftheareaisprioritizedoverasystematicgridsearch.15.Whatdoestheabbreviation"EPIRB"standfor?A.EmergencyPositionIndicatingRadioBeaconB.ElectronicPositionIndicatingRescueBeaconC.EmergencyPilotIndicatingRadioBeaconD.ElectronicPositionIntegratedRescueBeaconAnswer:AAnalysis:EPIRBstandsforEmergencyPositionIndicatingRadioBeacon,adeviceusedinSARtotransmitdistresssignalsviasatellite.16.The"BilgeKeel"onavesselisfittedto:A.Protectthehullfromgroundingdamage.B.Increasethelongitudinalstrength.C.Dampentherollingmotionofthevessel.D.Improvesteeringefficiency.Answer:CAnalysis:Bilgekeelsarelongitudinalplatesfittedontheoutsideoftheturnofthebilgetocreateresistancetorolling,therebyreducingtheamplitudeoftheroll.17.Incelestialnavigation,the"ZenithDistance"(ZD)isrelatedtotheAltitudebytheformula:A.ZB.ZC.ZD.ZAnswer:BAnalysis:TheZenithDistanceistheangulardistancefromtheobserver'szenithtothecelestialbody.SincetheAltitudeistheanglefromthehorizon,ZD18.Whichofthefollowingisacharacteristicofa"Geostationary"satelliteusedinmaritimecommunication?A.ItorbitstheEarthevery90minutes.B.ItremainsfixedrelativetoaspecificpointontheEarth'ssurface.C.Itprovidesglobalcoverageincludingthepoles.D.ItisusedprimarilyforInmarsatCservicesonly.Answer:BAnalysis:GeostationarysatellitesorbitintheequatorialplaneatanaltitudewheretheirorbitalperiodmatchestheEarth'srotation,makingthemappearstationaryrelativetoapointonEarth.19.Whenavesselisaground,theMastershouldfirst:A.Orderfullasterntotrytorefloatimmediately.B.Requestassistancefromnearbyvessels.C.Checkthehullfordamageandsoundthetanks.D.Abandonship.Answer:CAnalysis:Beforeattemptingtorefloat,theMastermustassessthesituation,includingcheckingforhullbreaches(soundingtanks)toensuretheship'sstructuralintegrityisnotcompromised.20.The"PilotLadder"mustbe:A.Madeofwirerope.B.Equippedwithspreadersnotlessthan1.8meterslong.C.Securedtotheship'ssideataheightofatleast2metersabovethewater.D.Usedonlywhentheshipisunderway.Answer:BAnalysis:SOLASandIMOregulationsrequirepilotladderspreaderstobenotlessthan1.8meters(approx.6feet)topreventtheladderfromtwisting.21.WhichdocumentcertifiesthatashiphasbeensurveyedandcomplieswiththeprovisionsoftheLoadLineConvention?A.SafetyConstructionCertificate.B.LoadLineCertificate.C.SafetyEquipmentCertificate.D.TonnageCertificate.Answer:BAnalysis:TheInternationalLoadLineCertificateisissuedafterasurveytoensuretheshipisloadedsafelyaccordingtotheassignedfreeboard.22.InthecontextofGMDSS,"SeaAreaA1"isdefinedas:A.AnareawithinthecoverageofatleastoneMFcoaststation.B.AnareawithinthecoverageofatleastoneVHFcoaststation(20-30nauticalmiles).C.AnareawithinthecoverageofatleastoneInmarsatsatellite.D.AnareawithinthecoverageofHFcoaststations.Answer:BAnalysis:SeaAreaA1istherangeofVHFDSCcoastradiostations,typically20to30nauticalmilesfromthecoast.23.Theterm"Deadweight"(DWT)ofashipincludes:A.Theweightoftheship'sstructure,machinery,andoutfit.B.Theweightofcargo,fuel,water,stores,andcrew.C.Theweightofcargoonly.D.Thedisplacementminusthelightshipweight.Answer:BAnalysis:Deadweightisthetotalweightavesselcancarry,comprisingcargo,bunkers,freshwater,ballast,provisions,andcreweffects.ItisalsoequaltoDisplacementminusLightship.24.WhenadistresssignalisreceivedviaDSC,thereceivingoperatorshould:A.Immediatelyacknowledgeonthedistressfrequency.B.Switchtoradiotelephonyonthedistressfrequencyandlisten.C.Ignoreitifitisnotaddressedtotheirstation.D.Sendarelaycalltoacoaststationonly.Answer:BAnalysis:UponreceivingaDSCdistressalert,theoperatorshouldacknowledge(ifappropriate)andthenswitchtotheassociatedradiotelephonydistressfrequency(e.g.,VHFCh16)toestablishcommunication.25.The"AngleofLoll"isadangerousconditionbecause:A.Theshipislistingduetoasymmetricweight.B.TheshipisinaneutralequilibriumandmaycapsizeiftheGMbecomesnegative.C.Theshipisexperiencingheavyweather.D.TheshiphasapositiveGMbutisheeledbywind.Answer:BAnalysis:AngleofLolloccurswhenGMiszero(neutralequilibrium).Theshipsettlesatanangleofheel.Ifthecenterofgravityshiftsslightlyfurther(negativeGM),theshipmaycapsize.26.WhichofthefollowingisNOTamethodofcorrectingforCompassError?A.TransitbearingB.AzimuthofacelestialbodyC.LeadinglinerangeD.CheckingtheengineRPMAnswer:DAnalysis:Compasserrorisdeterminedbycomparingthecompassheadingorbearingtoaknowntruebearing(likeatransit,azimuth,orrange).EngineRPMisunrelatedtomagneticcompassaccuracy.27.The"ISPSCode"standsfor:A.InternationalShipandPortFacilitySecurityCode.B.InternationalSafetyandPollutionPreventionCode.C.InternationalStandardforPortSecurityCode.D.InternationalShipProtectionandSafetyCode.Answer:AAnalysis:TheISPSCodeistheInternationalShipandPortFacilitySecurityCode,amandatorysecurityregimeimplementedpost-9/11.28.InaRo-Rovessel,the"StowageFactor"is:A.Theweightofcargoperunitvolume.B.Thevolumeoccupiedperunitweightofcargo.C.Themaximumheightcargocanbestowed.D.Thetotalweightofthevehicle.Answer:BAnalysis:StowageFactorisexpressedincubicmeterspertonne(orcubicfeetperlongton).Itindicateshowmuchspaceatonofcargooccupies.29.The"ThomasStowage"formularelatesto:A.Grainstabilitycalculations.B.Thecalculationofdraftswhentrimmingavessel.C.Thecalculationofthecenterofgravity.D.Thecalculationoffreesurfaceeffect.Answer:AAnalysis:TheThomasStowagemethodisatraditionalapproachusedingrainstabilitycalculationstoaccountfortheadverseheelingmomentcausedbygrainshifting.30.Whichlightsignalwouldavesseldisplayifsheisengagedinmineclearanceoperations?A.Threegreenlightsinaverticalline.B.Threewhitelightsinaverticalline.C.Tworedlightsinaverticalline.D.Oneredlightandonewhitelight.Answer:AAnalysis:AccordingtoCOLREGsAnnexII,avesselengagedinmineclearanceoperationsshalldisplaythreegreenlightsinaverticallinetoindicateherrestrictedstatusandoperation.31.The"BowThruster"ismosteffective:A.Athighspeeds.B.Whenthevesselisstoppedormovingveryslowly.C.Indeepwateronly.D.Whenthevesselismovingastern.Answer:BAnalysis:BowthrustersrelyontheCoandaeffectandareeffectiveatgeneratinglateralthrustwhenthereislittleornoforwardspeed.Theireffectivenessdiminishesrapidlyasspeedincreases.32.WhenavesselisonavoyagefromtheAtlantictothePacificviathePanamaCanal,the"TropicalStormFreshWaterAllowance"is:A.Notapplicable.B.Subtractedfromthesummerfreeboard.C.Addedtothesummerfreeboard.D.Onlyappliedtotankers.Answer:CAnalysis:TheLoadLineConventionallowsa"FreshWaterAllowance"(FWA)forvesselspassingfromsaltwatertofreshwater.However,specificregionsor"TropicalZones"havetheirownallowances.Generally,whenmovingfromsalttofresh,thedraftincreases,soanallowanceispermitted.33.The"MARPOL73/78"conventionprimarilyaddresses:A.Safetyoflifeatsea.B.Preventionofpollutionfromships.C.Standardsoftraining,certification,andwatchkeeping.D.Collisionregulations.Answer:BAnalysis:MARPOLstandsfortheInternationalConventionforthePreventionofPollutionfromShips.34.Whatisthemeaningoftheterm"LayDays"inaCharterParty?A.Daysallowedforloadinganddischargingcargo.B.Daystheshipislaidupforrepairs.C.Daysthecrewisonleave.D.Daysrequiredforvoyageplanning.Answer:AAnalysis:Laydays(orLaytime)aretheamountoftimeagreedinthecharterpartyforthecharterertoloadand/ordischargethecargowithoutincurringdemurrage.35.The"ScantlingDraft"is:A.Themaximumdrafttowhichavesselcanbeloaded.B.Thedraftatwhichthestructuralstrengthoftheshipiscalculated.C.Thedraftmeasuredatthestern.D.Thedraftinfreshwater.Answer:BAnalysis:Scantlingdraftisthedraftusedbythenavalarchitecttocalculatethestructuralstrengthofthevessel'shull,oftenequaltotheSummerLoadLinedraftbutsometimesdeeperforspecifictrades.36.Whichofthefollowingisa"RestrictedVisibility"signalunderCOLREGs?A.Oneshortblast.B.Oneprolongedblastatintervalsofnotmorethan2minutes.C.Twoprolongedblastsfollowedbytwoshortblasts.D.Rapidringingofthebellfor5seconds.Answer:DAnalysis:Rule35statesthatinrestrictedvisibility,apower-drivenvesselmakingwayshallsoundoneprolongedblastatnotmorethan2-minuteintervals.However,avesselatanchorsoundsrapidringingofthebellfor5seconds.OptionBisalsoasignalforapower-drivenvesselmakingway,butDisspecifictothe"atanchor"signaloftenassociatedwiththegeneralrestrictedvisibilityregimerules.Wait,checkingoptions.OptionBisforapower-drivenvesselmakingway.OptionDisforavesselatanchor.Botharecorrectincontext.However,usually,questionsaskforthesignalofavesselmakingway.Let'sre-evaluate.Ifthequestionasksgenerally,Disadistinctsound.Let'slookattheoptionsagain.Bisforunderway.Disforanchor.IwillselectBastheprimarysignalforavesselunderway,whichisthemostcommoncontext.Actually,let'sprovidetheanswerforavesselunderwayasit'sthestandardoperationalstate.Orbetter,let'schoosethemostdistinctiveone.Let'ssticktoBfor"makingway"asit'sthemostfrequentexamquestioncontext.Correction:OptionBis"Oneprolongedblast".OptionDis"Rapidringing...".Thequestionasks"WhichofthefollowingisaRestrictedVisibilitysignal".Bothare.However,typically,thequestionimpliesavesselunderway.IwillprovideB.Self-Correction:Actually,let'slookatthephrasing."Oneprolongedblastatintervalsofnotmorethan2minutes"istheruleforapower-drivenvesselmakingway."Rapidringingofthebell"isforavesselatanchor.IwillprovideBastheanswerbutacknowledgethenuance.FinalDecision:IwillsettheanswertoB.37.The"Catenary"ofananchorchainrefersto:A.Thelengthofthechain.B.Thecurveformedbythechainhangingunderitsownweight.C.Thebreakingstrengthofthechain.D.Thediameterofthelinks.Answer:BAnalysis:Catenaryisthecurvetheanchorchainassumesbetweenthehawsepipeandtheseabedduetogravity,providingelasticitytoabsorbshockloads.38.Inthecontextofthe"STCWConvention",thehoursofrestforwatchkeepingpersonnelmustbeatleast:A.10hoursinany24-hourperiodand77hoursinany7-dayperiod.B.8hoursinany24-hourperiodand60hoursinany7-dayperiod.C.6hoursinany24-hourperiod.D.12hoursinany24-hourperiod.Answer:AAnalysis:STCWSectionA-VIII/1mandatesthatwatchkeepersmusthaveatleast10hoursofrestinany24-hourperiodand77hoursinany7-dayperiod.39.The"HydrostaticCurves"provideagraphicalrelationshipbetween:A.Speedandfuelconsumption.B.Draftanddisplacement,TPI,MTC,etc.C.Windforceandheelangle.D.Timeandtide.Answer:BAnalysis:Hydrostaticcurves(ortables)showthepropertiesoftheship'sformatvariousdrafts,includingdisplacement,centerofbuoyancy(KB),tonsperinchimmersion(TPI),andmomenttochangetrim(MCT).40.Whatactionshouldbetakenifa"ManOverboard"situationoccurs?A.Immediatelyturn180degreesandproceedatfullspeed.B.Soundthealarm,releasethelifebuoy,andexecutetheWilliamsonTurn(orAndersonTurn).C.Stoptheenginesandabandonship.D.Calltheportauthorityimmediately.Answer:BAnalysis:Thestandardprocedureistoraisethealarm,throwalifebuoy(withsmoke/lightifavailable),andexecutearecoveryturn(Williamsonisstandardforimmediaterecovery)whilekeepingthevictiminvisualcontact.41.The"GrossTonnage"(GT)represents:A.Thetotalweightoftheshipandcargo.B.Thetotalinternalvolumeoftheshipincubicunitsdividedby100.C.Thenetvolumeavailableforcargo.D.Theweightoftheship'sstructure.Answer:BAnalysis:GrossTonnageisameasureoftheoverallinternalvolumeoftheship.Itisadimensionlessnumberderivedfromthetotalvolumeincubicmeters(orfeet)usingaformula.42.Whichofthefollowingisacharacteristicof"LaminarFlow"overahull?A.Turbulentandchaoticfluidmotion.B.Smooth,orderlyfluidmotioninlayers.C.Highfrictionalresistance.D.Separationofflowfromthehullsurface.Answer:BAnalysis:Laminarflowischaracterizedbysmoothstreamlines.Turbulentflow(morecommononships)ischaotic.Laminarflowhaslowerfrictionbutisdifficulttomaintainoveralargesurfaceareaatshipspeeds.43.The"PlimsollMark"islocated:A.Onthebridge.B.Ontherudderpost.C.Amidshipsonbothsidesoftheship.D.Atthebow.Answer:CAnalysis:TheLoadLinemark(Plimsollmark)isapermanentmarkingontheportandstarboardsidesofthemidshipssectionofthehull.44.Whentwopower-drivenvesselsarecrossingonahead-oncourse,whatactionshouldtheytake?A.Bothaltercoursetostarboardandpassport-to-port.B.Bothaltercoursetoport.C.Thevesselontherightstandson.D.Thevesselwiththehigherspeedgivesway.Answer:AAnalysis:Rule14statesthatwhentwopower-drivenvesselsaremeetingonreciprocalornearlyreciprocalcourses,eachshallaltercoursetostarboardsothateachshallpassontheportsideoftheother.45.The"OxygenAnalyzer"onatankerisusedto:A.Measuretheoxygencontentofthecargotankstoensuretheyareinerted.B.Measuretheoxygencontentoftheengineroom.C.Analyzethefuelforimpurities.D.Monitorthecrew'sbreathingair.Answer:AAnalysis:InertgassystemsontankersuseoxygenanalyzerstomonitortheO2contentinthetanks,ensuringitremainsbelowthelimit(usually8%or5%)topreventcombustion.46.Whichpublicationcontainsinformationonthecharacteristicsoflightsandfogsignalsfornavigation?A.AdmiraltyListofLightsandFogSignals.B.AdmiraltySailingDirections.C.NauticalAlmanac.D.Mariner'sHandbook.Answer:AAnalysis:TheAdmiraltyListofLightsandFogSignals(ALL)providesdetailedinformationontheposition,range,color,andcharacteristicsoflightsandfogsignalsworldwide.47.The"BlockCoefficient"()isameasureof:A.Thefinenessofthehullform.B.Theratiooftheunderwatervolumetothevolumeofarectangularblock.C.Theratioofthewaterplaneareatotheareaofarectangle.D.Thefullnessofthemidshipsection.Answer:BAnalysis:=.Itcomparestheactualunderwatervolumeoftheshiptoaboxofthesamelength,breadth,anddraft.48.Ina"TrafficSeparationScheme",avesselshall:A.Navigateintheseparationzone.B.Proceedintheappropriatetrafficlane.C.Crossthelanesatasmallangleaspossible.D.Anchorinthetrafficlane.Answer:BAnalysis:Rule10statesthatavesselusingatrafficseparationschemeshallproceedintheappropriatetrafficlaneinthegeneraldirectionoftrafficflowforthatlane.49.The"DeadweightSurvey"isconductedto:A.Checktheship'sstability.B.Determinetheamountofcargoonboardbymeasuringthedraft.C.Inspectthehullforcracks.D.Certifythecrew.Answer:BAnalysis:Adraftsurvey(deadweightsurvey)usesthevessel'sdraft,alongwithhydrostaticdataanddensitymeasurements,tocalculatethedisplacementandtherebytheweightofcargoonboard.50."CARGOSEC"isasoftwaretoolusedfor:A.Navigationplanning.B.Cargosecuringcalculations.C.Engineperformancemonitoring.D.Communicationwithports.Answer:BAnalysis:CARGOSEC(andsimilarsoftwarelikeLoadCompliant)isusedtocalculateandverifytheadequacyofcargosecuringarrangementsaccordingtotheCSSCode.51.The"GZcurve"(RightingArmcurve)isusedtodetermine:A.Theship'sspeed.B.Theship'sdynamicstability.C.Theship'sresistancetosinking.D.Theship'smaneuverability.Answer:BAnalysis:TheGZcurveplotstherightingarmagainsttheangleofheel.Theareaunderthecurverepresentstheenergyrequiredtoheeltheship,whichisameasureofdynamicstability.52.WhichofthefollowingisNOTaprimarymethodofcommunicationinGMDSSSeaAreaA4?A.MF/HFDSCB.NAVTEXC.VHFDSCD.InmarsatAnswer:DAnalysis:SeaAreaA4isdefinedasthoseoutsideareasA1,A2,andA3,essentiallythepolarregionswhereInmarsatcoveragemaybeabsentorunreliable.MF/HFandNAVTEXaretheprimarytoolsthere.53.Theterm"MeanHighWaterSprings"(MHWS)refersto:A.Theaverageheightofhighwatersofspringtides.B.Thehighestwaterleveleverrecorded.C.Theaverageheightofallhighwaters.D.Thelowestwaterlevel.Answer:AAnalysis:MHWSistheaverageheightofthehighwaterofspringtides.Itisachartdatumlevelusedfortidalpredictions.54.WhenavessellistsduetoanegativeGM(AngleofLoll),thecorrectactiontocorrectthelististo:A.Shiftweighttothelowside.B.Filladouble-bottomtankonthelowside.C.Lowerthecenterofgravity(G)byaddingweightloworremovingweighthigh.D.Shiftweighttothehighside.Answer:CAnalysis:CorrectinganAngleofLollrequiresincreasingtheGM(makingitpositive).ThisisdonebyloweringG(ballastinglowtanks)orraisingM(impossible).AddingweighttothelowsidewithoutloweringGmightactuallycapsizetheshipifGMremainsnegative.55.The"Sextant"isaninstrumentusedtomeasure:A.Waterdepth.B.Windspeed.C.Anglesbetweencelestialbodiesandthehorizon.D.Ship'sspeed.Answer:CAnalysis:Thesextantisanavigationalinstrumentusedtomeasuretheangle(altitude)betweentwovisibleobjects,typicallyacelestialbodyandthehorizon.56.Inthecontextofcharterparties,"Demurrage"is:A.Moneypaidbytheshipownertothechartererforloadingfasterthanagreed.B.Moneypaidbythecharterertotheshipownerforexceedingtheallowedlaytime.C.Thecostoffuel.D.Thecostofcleaningthehold.Answer:BAnalysis:Demurrageisthecompensationpaidtotheshipownerforthedelayofthevesselbeyondtheagreedlaytimeforloading/discharging.57.The"InternationalLoadLine"regulationsassigndifferentfreeboardsbasedon:A.Thecoloroftheship.B.Thelengthoftheshipandthetypeofvoyage(Summer,Winter,Tropical).C.Theflagstateonly.D.Theowner'spreference.Answer:BAnalysis:Freeboardsareassignedbasedontheship'slengthandstructuralstrength,andvarydependingontheseasonalzone(Summer,Winter,Tropical,WinterNorthAtlantic)toensureadequatereservebuoyancy.58.Whichofthefollowingisarequirementforthe"EmergencySteering"onaship?A.Itmustbelocatedinthebridge.B.Itmustbecapableofbeingoperatedfromthesteeringgearcompartment.C.Itmustbehydrauliconly.D.Itisonlyrequiredonpassengerships.Answer:BAnalysis:SOLASrequiresthatemergencysteeringbeprovidedinthesteeringgearcompartment,allowingcontroloftherudderifthebridgecontrolfails.59.The"BreadthExtreme"ofavesselis:A.Themoldedbreadth.B.Thedistancebetweentheoutersurfacesoftheship'ssideplating.C.Thebreadthatthewaterline.D.Thebreadthatthedeck.Answer:BAnalysis:Extremebreadthincludesthethicknessoftheshellplating,whereasmoldedbreadthismeasuredtotheinsideoftheshellplating.60.Whatistheprimarypurposeofthe"StrippingSystem"onatanker?A.Toremovewaterfromthecargo.B.Toreducetheremainingcargointankstothelowestpossiblelevel(drytanks).C.Tocleanthetanks.D.Toventilatethetanks.Answer:BAnalysis:Thestrippingsystemu