Mate (naval officer)

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A mate is a deck naval officer aboard a merchant vessel, such as the chief mate (first mate), second mate, or third mate. Between 1800 and 1890 "mate" was also the naval rank now known as sub-lieutenant—master.

One of the mates is always the watch keeping officer, unless the master takes that responsibility; each mate also has other duties, such as making the passage planning, overseeing loading and unloading and personnel management.

See also[edit]


  • Eifler, Edgar G. (1960). The Sails and Sails - motor Navy (Naval Architecture Book) Annapolis Academy Navy United States North America Editor.[full citation needed]