심해측연

Deep Sea Lead

십자형이음

Cruciform Joint, Cross Shaped Joint

싱커

Sinker

쌍가닥 파이프

Breeches Pipe

쌍기통기관

Double Cylinder Engine

쌍끌이트롤선

Two Boat Trawler, Bull Trawler

쌍덕트

Dual Duct

쌍두선

Double Ender

쌍묘박

Two Anchor Mooring

쌍방무선전화장치

Two Way Radiotelephone Apparatus