Editing Maritime transport (section)

===Engine department===
{{further|Engine department}}
A ship's engine department consists of the members of a ship's crew that operate and maintain the propulsion and other systems on board the vessel. Engine staff also deal with the "Hotel" facilities on board, notably the [[sewage]], lighting, [[air conditioning]] and water systems. They deal with bulk fuel transfers, and require training in [[firefighting]] and [[first aid]], as well as in dealing with the ship's boats and other nautical tasks- especially with cargo loading/discharging gear and safety systems, though the specific cargo discharge function remains the responsibility of deck officers and deck workers. On [[Liquefied petroleum gas|LPG]] and [[LNG]] [[tanker (ship)|tankers]], however, a cargo engineer works with the deck department during cargo operations, as well as being a watchkeeping engineer.

A common engine crew for a ship includes:
* (1) [[Chief engineer]]
* (1) [[Second engineer]] / first assistant engineer
* (1) [[Third engineer]] / second assistant engineer
* (1 or 2) [[Fourth engineer]] / third assistant engineer
* (0–2) Fifth engineer / junior engineer
* (1–3) [[Oiler (occupation)|Oiler]] (unlicensed qualified rating)
* (0–3) Greaser (unlicensed qualified rating)
* (1–5) Entry-level rating (such as [[wiper (occupation)]], utilityman, etc.)

Many American ships also carry a [[motorman (ship)|motorman]]. Other possible positions include [[machinist]], [[electrician]], refrigeration engineer, and tankerman. Engine cadets are engineer trainees who are completing sea time necessary before they can obtain a watchkeeping license.