?隔离压舱水    segregated ballast

?隔离压载舱    segregated ballast tank

?隔离压载水舱    segregated ballast tank (SBT)

?隔离,隔离舱组(油轮)    segregation

?围网渔船,巾着网渔船    seiner (or purse seiner)

?熔执,扎缚,刮痕    seizing

?扎用麻绳    seizing rope

?扎用钢丝    seizing wire

?选择腐蚀    selective corrosion

?选择开关    selective switch

?硒整流器    selenium rectifier

?自动对准滚珠轴承    self aligning ball bearing

?自动式净油机    self cleaning type oil purifier

?升降式平台    self elevating platform (SEP)

?自动升降式钻油台    self elevation drilling unit (or rig)

?自动升降式平台    self elevation platform

?自激式发电机    self excited generator

?自行检查    self inspection

?自润轴承    self lubricating bearing

?自推试验(船模试验)    self propulsion test

?自封联结器    self seal coupling

?自动残油清除装置    self stripping device

?自动均载煤船    self trimming collier

?自动润滑器    self-acting lubricator

?自动发烟信号    self-activating smoke signal

?自动平衡平滑阀    self-balanced flat slide valve

?自闭停止阀    self-closing stop valve

?自给式呼吸器    self-contain breathing apparatus

?自给式压缩空气操作呼吸器    self-contain compressed air-operated breathing apparatus

?水肺    self-contained underwater breathing apparatus (SCUBA)

?自卫舰    self-defence ship

?自燃信号灯    self-ignition light

?自动照明型    self-lighting type

?自力控制    self-operated control

?自动注入    self-priming

?自注泵    self-priming pump

?自航驳船    self-propelled (or self- propelling) barge

?自航挖泥船    self-propelled (or self- propelling) dredger

?自航式装置    self-propelled units

?自航式挖泥船    self-propelling dredger

?自动调节    self-regulation

?自动扶正部份围蔽救生艇    self-right partially enclosed life boat