?海水吸入口    sea suction

?[海上]试航    sea trial

?海水阀    sea valve

?海水润滑艉轴管轴承    sea water lubricated stern tube bearing

?海水泵    sea water pump

?海床    seabed

?垃圾收集船    sea-born debris collecting ship

?水上机场    seadrome

?航海性能    seagoing qualities

?海船,海轮,远洋船    seagoing ship (or vessel)

?远洋拖船    seagoing tug

?海船,海轮    seagoing vessel

?远洋船,海船    seagoing vessel

?耐海性    seakeeping

?凌波性    seakindliness

?封,封件    seal

?防漏焊    seal weld

?捕海豹船    sealer

?封闭    sealing

?封闭粘剂    sealing adhesion

?封闭焊珠    sealing bead

?封口焊珠    sealing bead

?封闭剂    sealing compound

?封闭带    sealing tape

?纵缘,缝    seam

?接缝模具    seam jig

?纵缝焊接    seam welding

?海员,船员    seaman

?船员厕所    seaman‘s head

?船艺    seamanship

?缝帆法    seaming

?无缝管    seamless tube

?水上飞机    seaplane

?飞机驳船    seaplane barge

?水上飞机母船    seaplane carrier

?水上飞机勤务船    seaplane tender

?探索线圈    search coil

?探照灯    search light

?厚薄规,测隙规    searcher (or feeler gauge)

?季裂    season crack

?季节热带区    seasonal tropical area

?季节冬期带    seasonal winter zone