armored warship; ironclad
Historical naval term for a warship protected by armor plating, especially from the 19th century.
19世紀後半、装甲艦は海戦の主力となった。
In the late 19th century, armored warships became the mainstay of naval warfare.
Compound of 装甲 (armor) + 艦 (warship). The term is a direct calque from Western naval terminology.