潜せん水すい士し

noun

licensed diver; professional diver

Refers to a diver who holds a national license under Japanese law (e.g., for underwater construction or salvage). Not a general term for recreational divers.

• 彼かれは潜せん水すい士しの資し格かくを取とって、海かい洋よう工こう事じに携たずさわっている。

  He obtained a licensed diver qualification and works on marine construction.