What is a third engineer?

A Third Engineer, also known as a Third Assistant Engineer, is a licensed member of the engineering department on a merchant ship. They are responsible for operating and maintaining machinery in the engine room, including boilers, generators, and pumps. Third Engineers typically report to the Second Engineer and assist in routine maintenance, troubleshooting, and emergency repairs to ensure the vessel operates safely and efficiently. They also keep records of engine performance and fuel consumption as part of their daily duties.