Bluejacket and Shipmate

Bluejacket noun - A serviceman in the navy.

Shipmate and bluejacket are semantically related in sailor topic. In some cases you can use "Shipmate" instead a noun "Bluejacket", when it comes to topics like person who travels by sea, person who makes living on the sea.

Shipmate noun - An associate on the same ship with you.

Bluejacket and shipmate are semantically related in sailor topic. You can use "Bluejacket" instead a noun "Shipmate", if it concerns topics such as person who travels by sea, person who makes living on the sea.