third mate
- the officer of a merchant vessel next in command beneath the second mate.
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Also called third officer.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for third mate
Historical Examples
This set everybody in motion, and the captain and third-mate were on deck in a minute.
Afloat And AshoreJames Fenimore Cooper
As third-mate, it was my duty to see the boxes taken out of the hold, and the opium delivered.
Ned MyersJames Fenimore Cooper