Third mate

A third mate (3/M) or third officer is a licensed member of the deck department of a merchant ship. The third mate is a watchstander and customarily the ship's safety officer and fourth-in-command. The position is junior to a second mate.

Other duties vary depending on the type of ship, its crewing, and other factors.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 4.0

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