What are the responsibilities of a captain first mate?

A Captain First Mate, often simply called a First Mate, is the second-in-command on a ship and acts as the primary assistant to the Captain. Their main duties include overseeing the crew, ensuring the safe and efficient operation of the vessel, managing navigation and watch schedules, and handling emergency procedures. The First Mate also assists with maintenance, cargo operations, and enforcing safety regulations, making them a crucial leader on board. In the Captain’s absence, the First Mate assumes full command of the ship.