船舶专业英语Word文件下载.docx
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船舶专业英语Word文件下载.docx
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cargoiscarried.Someofthedouble-bottomtanksmaybe
usedforfueloilandfreshwater.Thesaddletanksalsoservetoshapetheupper
regionofthecargoholdandtrimthe
cargo.Largehatchwaysareafeatureof
bulkcarriers,sincetheyreducecargo-handlingtimeduringloading
andunioading.
rran^'
emsecrionsf©
bulkcarrier.
AnorecarrierhastwoIongitudinalbulkheadswhichdividethecargosectionintowingtanksportandstarboard,and
thecenterholdwhichisusedforore.Thehighdoublebottomisafeatureofore
carriers.Onballastvoyagesthewing
tanksanddoublebottomsprovideballastcapacity.Onloadedvoyagestheoreis
carriedinthecentralhold,andthehighdoublebottomservesto
raisethecenterofgravityofthisverydensecargo.Thevessel'
s
behaviouratseaisthusmuchimproved.TwoIongitudinalbulkheadsareemployedtodividetheshipintocenterandwingtankswhichareusedforthecarriageofoilcargoes.Whenoreiscarried,onlythecentertanksectionisusedforcargo.Adoublebottomisfittedbeneaththecentertankbutisusedonlyforwaterballast.Thebulkheadsandhatchesmustbeoiltight(
密的).
iQfijjitrtjlklwarl
舷侧side底部bottom舭部bilge甲板deck舱口盖hatchcover
carrier
Largehatchesarefeaturesofallbulkcarriers,tofacilitaterapidsimplecargohandling.Alargeproportionofbulkcarriersdonotcarrycargo-handling
equipment,becausetheytradebetween
specialterminals(终点)whichhave
particularequipmentforloadingandunioadingbulkcommodities.The
availabilityofcargo-handlinggeardoes
increasetheflexibilityofavesselandforthisreasonitissometimesfitted.Combinationcarriershandlingoilcargoeshavetheirowncargopumps,piping
systems,etc.,fordischargingoil.
Deadweightcapacitiesrangefromsmallto150,000tonsdependingupontypeofcargo,etc..Speedsareintherangeof12-16knots.
Thecontainershipis,asitsnameimplies,designedforthecarriageofcontainers.Acontainerisare-usableboxof2,435mm
by2,435mmsection(截面),withlengthsof6,055mm,9,125mmand12,190mm.Containersareinuseformostgeneralcargoes,andliquid-carryingversions(样式,版本)alsoexist.Inaddition,
refrigeratedmodelsareinuse.Block分段10000TEU
1)Thecargo-carryingsectionoftheshipisdividedintoseveralholdswhichhavehatchopeningsthefullwidthandlengthofthe
hold.2)Thecontainersareracked(放在)inspecialframeworks
andstacked(堆放)oneupontheotherwithintheholdspace.3)Cargohandlingthereforeconsistsonlyofverticalmovementofthecargointhehold.4)Containerscanalsobestackedonthehatch
coverswherealowdensitycargoiscarried.
Thesewingtanksmaybeutilizedforwaterballastandcanbe
arrangedtocounter(驳回;
反方向;
还击)theheeling(横倾)ofthe
shipwhendischargingcontainers.Adoublebottomisalsofittedwhich
addstotheIongitudinalstrengthandprovidesadditionalballastspace.
Accommodationandmachineryspacesareusuallylocatedafttoprovidethemaximumlengthoffull-bodiedshipforcontainerstowage(储存).
Containershipsizesvaryconsiderablywithcontainer-carryingcapacitiesfrom100tonsto2000tonsormore.Asspecialistcarrierstheyaredesignedforrapidtransitsandarehighpowered,highspeedvesselswithspeedsupto30knots.Someofthelargervesselshavetriple-screw
propulsion(三螺旋桨动力装置)arrangements.
MobileDrillingPlatforms
Theunderwatersearchhasbeenmadepossibleonlybyvastimprovementsinoffshoretechnology(近海工程技术).Drillers
(钻井平台)firsttooktotheseawithland
锚泊)
rigs(陆用钻机)mountedonbargestowedtolocationandanchored(
orwithfixed
应船)(Fig.1).
platformsaccompaniedbyatendership(供
Fig.1Offshorefixeddrillingplatform
Awidevarietyofrigplatformshassinceevolved,somedesignedtocopewithspecifichazardsoftheseaandothersfor
moregeneralwork.Allnewtypesstress
characteristicsofmobilityandthecapabilityforworkinevendeeperwater.
Theworld'
smobileplatformcanbedividedintofourmaingroupings:
self-elevating(jack-up)platforms(自升
式),submersibles(坐底),
semisubmersibles,andfloatingdrillships.
(a)
(b)
Fig.2Offshoreself-elevatingdrillingplatform.
(a)----Underwaterdesign(b)self-elevatingdrillingplatform
Fig.3Offshoresemisubmersibledrillingplatform
Semisubmersibles(Fig.3)areaversionofsubmersibles.Theycanworkas
bottom-supportedunitsorindeepwaterasfloaters.Theirkeyvirtueisthewiderangeofwaterdepthsinwhichtheycanoperate,plusthefactthat,whenworkingasfloaters,theirprimarybuoyancyliesbelowtheactionofthewaves,thusprovidinggreatstability.The
“semis”arethemostrecent
oftherig-typeplatforms.
Fig.4Floatingdrillship.Suchshipscandrillindepthsfrom60to1000f(18to300m)
ormore
Byfarthemostcommontypeoffixed
offshorestructureinexisteneetodayis
thetemplate(导管架平台),orjacket,
structureillustratedinFig.1.Thistypeofstructureconsistsofaprefabricatedsteel
substructure(预制钢制导管架)that
extendsfromtheseafloortoabovethewatersurfaceandaprefabricatedsteel
decklocatedatopthesubstructure.Thedeckissupportedbypipepiles(柱桩)
driventhroughthelegs(柱腿)ofthe
substructureintotheseafloor.Thesepilesnotonlyprovidesupportforthedeckbutalsofixthestructureinplaceagainstlateralloadings(侧向载荷)fromwind.
waves,andcurrents.
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2.27
1、句子听写
1)油轮的装货段被纵、横舱壁分成了几个独立的液货舱。
2)首尾尖舱用来装压载水。
3)污水舱一般设置在装货段的后面,装载航行时用来装燃油
4)集装箱被一个接着一个地堆放在干货舱里。
5)设置双层底是为了增加纵向强度和提供附加的压载空间。
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