What is a 3rd engineer?

A 3rd Engineer, also known as Third Engineer or Third Assistant Engineer, is a licensed member of the engine department on a merchant ship. They are responsible for operating, maintaining, and repairing the ship's machinery, such as engines, generators, and pumps, under the supervision of senior engineers. 3rd Engineers usually stand watch, monitor equipment, and ensure that all engineering systems function safely and efficiently. They play an essential role in the smooth operation of a ship’s engine room and overall safety at sea.