무갑판선

Open Boat

무개형컨테이너

Open Top Container, Harch Coverless Container

무게줄임구멍

Lightening Hole

무동력선

Non-powered Vessel

무선국

Wireless Station, Wireless Office

무선방위탐지국

Radio Detection Finder Station

무선일지

Radio Log

무선전신 비상자동수신기

Radiotelegraph Auto Alarm

무선전신기

Radio Telegraph, Wireless Telegrahp

무선조종

Wireless Control