단저

Single Bottom

단절부재

Intercostal Memser

단접

Blacksmith Welding, Forge Welding

단정

Boat

단정갑판

Boat Deck

단정대빗

Boat Davit

단정데릭

Boat Derrick

단정비품

Boat Equipment

단정시험

Boat Test

단조

Forging