The engine department runs the main engine, electricity generation and auxiliary systems. The ship moves while the engine room works, so the team's cooperation is critical.
Chief Engineer
- Head of the engine department, responsible to the Master.
- Responsible for the safe and efficient operation of the engine room, maintenance and fuel management.
- Makes decisions on major repairs and breakdowns.
Second Engineer
- Manages the day-to-day running of the department; prepares the maintenance schedule and the distribution of work.
- Assistant to the Chief Engineer.
- Usually works day work or a similar routine, depending on the ship.
Third and Fourth Engineer
- Keep the engine-room watch.
- Responsible for daily monitoring of generators, boilers, pumps and auxiliary equipment.
- Take an active part in maintenance.
Electro-Technical Officer (ETO)
- Responsible for maintaining the electrical, electronic and automation systems.
- An important specialist role on modern ships.
Engine ratings
- Motorman / Oiler: Assists the engineer on watch; carries out rounds and takes readings.
- Wiper: Cleaning and simple maintenance; entry level.
- Fitter: The mechanical craftsman of the engine room (on some ships).
Safety in the engine room
There is heat, pressure, noise and fire risk. Permit-to-work systems, lockout procedures and communication are very important. See the engine watchkeeping article.
The manning structure depends on ship type and size.

