561 小艇工场 boat shop
562 小艇龙骨架 boat skid
563 小艇吊索 boat sling
564 小艇系杆 boat spar
565 小艇支柱 boat stand
566 登艇站 boat station
567 小艇储放装置 boat stowage
568 水手长,帆缆上士 boatswain (or bosun)
569 工作吊板 boatswain‘s chair
570 帆缆库 boatswain‘s (or deck) store
571 帆缆库 boatswain‘s store room
572 小艇空气箱 boat tanks
573 小艇起吊试验 boat test
574 小艇绞车 boat winch
575 艏斜桅拉条,艏斜桅牵索 bobstay
576 吊锤重 bob weight
577 生化需氧量 BOD (= biochemical oxygen demand)
578 横剖面线图 body plan
579 挥发气 BOG (= boil-off gas)
580 应急舵链 boggin line (or rudder pendant chain)
581 1)锅炉 2)汽锅 boiler
582 锅炉座 boiler bearer (or saddle, or seating, or stool)
583 锅炉承架 boiler bracket
584 1)锅炉壳 2)锅炉棚 boiler casing
585 锅炉隔热板 boiler cladding
586 [锅]炉[周]围间隙 boiler clearance
587 锅炉[绝热]包层 boiler clothing (or lagging)
588 锅炉粉 boiler compound
589 锅炉架 boiler cradle
590 [锅]炉鼓 boiler drum