航こう海かい長ちょう

noun

chief navigator; navigating officer; navigator; sailing master

A senior officer responsible for navigation on a ship or aircraft. The term is used in military and some civilian contexts.

• 彼かれは大おお型がたタンカーの航こう海かい長ちょうを務つとめている。

  He serves as the chief navigator on a large tanker.

• 航こう海かい長ちょうは針しん路ろの安あん全ぜんを確かく認にんする責せき任にんがある。

  The navigating officer is responsible for ensuring the safety of the course.