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1、LessonFiveGeneralArrangement1.1DefinitionThegeneralarrangementofashipcanbedefinedastheassignmentofspacesforalltherequiredfunctionsandequipment,properlycoordinatedforlocationandaccess.Fourconsecutivestepscharacterizegeneralarrangement;namely,allocationofmainspaces,settingindividualspace
2、boundaries,choosingandlocatingequipmentandfurnishingwithinboundaries,andprovidinginterrelatedaccess.Thesestepsprogressfromoveralltodetailconsiderations,althoughthereissomeoverlapping.Generally,particulararrangementplansarepreparedforconceptual,preliminary,contract,andworkingplanstages.
3、Thedataforearlystagescomeintofirstexperience,andthedegreeofdetailincreasesasthedesignprogresses.Ithasoftenbeensaidthatshipdesignisinevitablyacompromisebetweenvariousconflictingrequirements,anditisinformulationofthegeneralarrangementthatmostofthecompromisesaremade.Shipdesignrequiresamel
4、dingofmanyartsandsciences,andmostofthismeldingoccursinthegeneralarrangement.Thedesignerconsidersthedemandsforallthefunctionsandsubfunctionsoftheship,balancestherelativetypesandimportanceofthedemands,andattemptstoarriveatanoptimumcoordinaterelationshipofthespaceassignmentswithintheshiph
5、ull.Thegeneralarrangement,then,representsasummaryorintegrationofinformationfromotherdivisionsandspecialtiesintheshipdesign,toprovideallthenecessaryfunctionsoftheshipinthemostefficientandeconomicalwayfromanoverallviewpoint.Theefficientoperationofashipdependsupontheproperarrangementofeac
6、hseparatespaceandthemosteffectiveinterrelationshipsbetweenallspaces.Itisimportantthatthegeneralarrangementbefunctionallyandeconomicallydevelopedwithrespecttofactorsthataffectboththeconstructionandoperationcost,especiallythemanpowerrequiredtooperatetheship.Manyotherdivisionsofshipdesign
7、providethefeed-inforthegeneralarrangement,suchasstructure,hullengineering(hatchcovers,cargohandling,etc),scientific(weights,stability,andlines),engineering(machinery,uptakes),andspecifications.1.2FunctionofshipInthischapter,considerationofshiptypeisrestrictedtothosewhosefunctionistot
