What is a 4th engineer?

A 4th Engineer is a junior-level officer in the engineering department on board a ship, typically part of the engine crew. Their primary responsibilities include assisting in the operation and maintenance of the ship’s machinery, engines, and other mechanical systems. They usually report to the 2nd or 3rd Engineer and are involved in routine checks, repairs, and daily operational tasks as assigned. This role requires a valid marine engineering license and knowledge of safety protocols. The 4th Engineer position is often considered an entry-level officer role for marine engineers.