Chief mate
>
A chief mate or chief officer, usually also synonymous with the first mate or first officer, is a licensed mariner and head of the deck department of a merchant ship. The chief mate is customarily a watchstander and is in charge of the ship's... Wikipedia
Duties: Cargo officer, Deck department head
Other names: Chief officer, first mate, first officer
Reports to: Captain
Requirements: Chief Mate's License
Watch (at sea): Varies (0400-0800, 1600-2000)
Watch (in port): Varies (0800-1700)
Watchstander: Yes/Depends on shipboard manning requirements