制せい海かい権けん

noun

command of the sea; naval supremacy

Military and geopolitical term for the ability to control maritime areas, often used in historical and strategic contexts.

• 太たい平へい洋よう戦せん争そうでは、制せい海かい権けんをめぐる激はげしい戦たたかいが繰くり広ひろげられた。

  During the Pacific War, fierce battles were fought over command of the sea.

• その国くには周しゅう辺へん海かい域いきの制せい海かい権けんを確かく保ほしようとしている。

  That country is trying to secure naval supremacy in the surrounding waters.