fleet in being

Noun

countable

(military, navy, countable) A naval fleet which exerts an influence while remaining in port.

Japanese Meaning

停泊中でありながら、その存在自体によって敵に影響を及ぼす海軍の艦隊

The admiral maintained a fleet in being to deter the enemy without risking open battle.

提督は、港に留まって影響力を行使する艦隊を維持して、敵を抑止しつつ公然の戦闘を避けた。

Sense（1）

(military, navy, countable) A naval fleet which exerts an influence while remaining in port.

In point of fact command of the sea and a fleet in being are mutually exclusive terms.

fleets in being

（ plural ）