Proceedings magazine is a communication tool for the Coast Guard's Marine Safety & Security Council. Each quarterly magazine focuses on a specific theme of interest to the marine industry.
Issue link: https://uscgproceedings.epubxp.com/i/149372
Deck A nswers 1. A. Discharging100tonsofcargo IncorrectAnswer:Removingweightwoulddecreasethedraftofthevessel. B. Shifting100tonsofcargover- IncorrectAnswer:Shiftingweightwouldchangetheverticalcenterofgravityofthevessel tically10feet butwouldnotchangethedraftofthevessel. C. Enteringshallowwater Correct Answer: Whenenteringshallowwaterthereisareductioninpressureonthe hull,thisreducedpressurecausesthevesseltoexperienceanincreaseddraft.Reference: Derrett;"ShipStabilityforMastersandMates." D. Transiting from fresh to salt IncorrectAnswer:Freshwaterislessdensethansaltwater.Whentransitingtosaltwater, water thevesseldisplaceslesswaterbyvolume;thisreducesthesubmergedportionofthehull and decreases draft. 2. A. Thetestweightofthevessel'scranes B. Thesafeworkingloadofthevessellashing gear 3. A. Ahigh-pressurearea IncorrectAnswer:Ahurricaneisalow-pressuresystem. B. Anextratropicallow-pressure Correct Answer: Whencoldairintrudes,thewindsgraduallyabateastheconcentrated system stormdisintegrates.Thestorm'swarmcorewillsurviveforafewmoredaysbefore completingthetransformationintoanextratropicallow-pressuresystem.Reference: Bowditch;"TheAmericanPracticalNavigator." C. A tropical storm IncorrectAnswer:Asahurricanedissipates,itisreclassifedasanextratropicallowpressuresystem. D. Aneasterlywave IncorrectAnswer:Aneasterlywaveisawestwardmovingtroughoflowpressure,itis theoriginpointofahurricane. 4. A. The stand-on vessel must keep IncorrectAnswer:InlandandInternationalRule17a(i)states"Whereoneoftwovesoutofthewayoftheothervessel selsistokeepoutofthewaytheothershallkeephercourseandspeed." whenriskofcollisionexists. Rule17a(ii)states,"Thelattervesselmayhowevertakeactiontoavoidcollisionby hermaneuveralone,assoonasitbecomesapparenttoherthatthevesselrequiredto keepoutofthewayisnottakingappropriateactionincompliancewiththeseRules." IncorrectAnswer:ThisinformationisfoundintheVesselCargoRegister. Correct Answer: SOLASrequiresvesselsthatdonotcarrysolidorliquidbulk cargotobeloadedinaccordancewiththeCargoSecuringManual.IMOMSC/ Circ745outlinestheinformationrequiredintheCargoSecuringManual, includingthesafeworkingloadoffxedandportablesecuringdevices. C. Operationaltestdataforthevessel'shatch IncorrectAnswer:ThisinformationisnotrequiredintheCargoSecuring coversfromtheclassifcationsociety Manual. D. A list of cargo the vessel is capable of IncorrectAnswer:AlistofcargosisfoundontheCertifcateofInspection transporting issuedbytheU.S.CoastGuard. Therulestatesthattheobligationofthestand-onvesselistomaintaincourseand speed.Ifitisdeterminedtheothervesselisnotactingappropriatelytherulestates thestand-onvesselmaytakeactionbyitsmaneuveralone. B. Risk of collision always exists IncorrectAnswer:InlandandInternationalRule7defnesRiskofCollision.Riskof whentwovesselspasswithinone Collisiondoesnotexistbyvirtueoftwovesselspassingwithinamileofeachother. mile of each other. C. Risk of collision always exists IncorrectAnswer:InlandandInternationalRule7d(i)states,"…suchriskshallbe whenthecompassbearingofan deemedtoexistifthecompassbearingofanapproachingvesseldoesnotappreciaapproaching vessel is changing blychange."WhileRiskofCollisionmayexistifthecompassbearingisappreciable appreciably. changesitdoesnotalwaysexistasthequestionstates. D. Riskofcollisionmayexistwhen Correct Answer: InlandandInternationalRule7d(ii)states"…suchriskmaysomethe compass bearing of an timesexistevenwhenanappreciablebearingchangeisevident,particularlywhen approaching vessel is changing approachingaverylargevesseloratoworwhenapproachingavesselatcloserange." appreciably. 94 Proceedings Summer 2013 www.uscg.mil/proceedings