Oxyoropane Cutting

산소프로판절단

Oxygen Gouging

산소홈파기

Oxyhydrogen Welding

산수소용접

Oxide Paint

산화금속페인트

Oxydizing Flame

산화불꽃

Oxidizing Flame

산화염

Onboard Test

선내시험

Official Number, Distinctive Number

선박번호

On-board Communication Equipment

선상통신장치

Outboard Motor

선외기관