operating depth

Noun

uncountable usually

(nautical, military) The maximum depth at which a submarine is permitted to operate when actively engaged in battle.

Japanese Meaning

戦闘時における、潜水艦が運用可能な最大水深

艦長は戦闘中の船体損傷のリスクを減らすため、潜水艦に作戦深度より浅く保つよう命じた。

Sense（1）

(nautical, military) The maximum depth at which a submarine is permitted to operate when actively engaged in battle.

operating depths

（ plural ）