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An engine order telegraph or E.O.T., also referred to as a Chadburn, [1] is a communications device used on a ship (or submarine) for the pilot on the bridge to order engineers in the engine room to power the vessel at a certain desired speed.
A telegraph message sent by an electrical telegraph operator or telegrapher using Morse code (or a printing telegraph operator using plain text) was known as a telegram. A cablegram was a message sent by a submarine telegraph cable, [ 4 ] often shortened to "cable" or "wire".
An engine order telegraph dial located in the engine compartment of U-505. "MT" is Maschinen Telegraf, (Telegraph Machine), and "Bb", indicating Backbord, (Port). The Type IXC was a further refinement of the class with storage for an additional 43 tonnes of fuel, increasing the boat's range.
Engine commands would be relayed to the engine officer in the engine room by an engine order telegraph that displayed the captain's orders on a dial. The engine officer would ensure that the correct combination of steam pressure and engine revolutions were applied.
Sailors stand lee helm and helmsman watch. Traditionally, two stations are on the bridge of a ship for controlling the vessel's maneuvers: the helm, which uses a wheel (or touchscreen equivalent) to send signals to control the position of the rudder or rudders, and the lee helm, which traditionally inputs speed commands by operating an engine order telegraph to send engine commands to the ...
The Commonwealth navies use the following telegraph commands: Slow ahead/astern, the number of revolutions is standardized for the individual ship and is unstated; Half ahead/astern, accompanied by an order for a power setting (e.g., "half ahead both engines, revolutions 1,500") Full speed ahead/astern. This is reserved for emergencies and as ...
An examination revealed that the cargo section was almost totally destroyed by the explosion, and the engine order telegraph still registering "full ahead". All of V.A. Fogg's crew members lost their lives. However, the chief radio officer, William A. Shaw, had left the ship for an emergency medical procedure only a few hours before the ship ...
The first steering engine with feedback was installed on Isambard Kingdom Brunel's Great Eastern in 1866. [2] Designed by Scottish engineer John McFarlane Gray and built by George Forrester and Company , this was a steam-powered mechanical amplifier used to drive the rudder position to match the wheel position.