Engine department

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The engine control room on the Argonaute.

An engine department or engineering department is an organizational unit aboard a ship that is responsible for the operation, maintenance, and repair of the propulsion systems and the support systems for crew, passengers, and cargo.[1] These include the ship engine, fuel oil, lubrication, water distillation, separation process, lighting, air conditioning, and refrigeration.

The engine department emerged with the arrival of marine engines for propulsion, largely during the later half of the 19th century. Due to advances in marine technology during the 20th century, the engine department aboard merchant ships is considered equally important as the deck department, since trained engine officers are required to handle the machinery on a ship.[citation needed]

Typically, a ship's engine department is run by the engine officers but manned with other occupational specialties of the seafarer's trade like:

  • Machinist/Fitter: A rating (or petty officer) who is specialized in fabrication, welding, etc.
  • Motorman: A, not always, qualified engine rating who stands a watch with the engine officer, as well as performing menial tasks and assisting engine officers during maintenance.
  • Oiler: A rating who is responsible for ensuring that machinery is adequately lubricated. Performs menial tasks such as cleaning, sounding tanks etc.
  • Wiper: The lowest rating in the engine room and is tasked with keeping the machinery spaces clean and tidy. Wipers usually go on to become oilers once they are familiar with engine room machinery and specific routines.

Defunct positions within the engine department include the fireman, who was a rating responsible for shoveling coal into the boiler furnaces of steam engines, and the coal trimmer, a rating that loaded coal in the bunkers and transported the coal from the bunkers to the firemen.

Nowadays due to the increase in automation on merchant vessels and the increase in the unattended machinery spaces (UMS) aboard them, the number of seafaring engine officers has decreased drastically on board merchant ships. Today, the engine department usually consists of the following number of engine officers and ratings:[citation needed]

Additionally, many vessels also carry a specific type of engine officer known as an electro-technical officer.

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