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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.
An engine order telegraph, used to send instructions from the bridge of a ship to the engine room, fails to meet both criteria; it has a limited distance and very simple message set. There was only one ancient signalling system described that does meet these criteria.
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 Steamboat Natchez ' s two tandem-compound steam engines are controlled from this station. The engine order telegraph is on the left. Overhead throttles control the flow of steam to the two engines. The red lever overhead reverses the engines. The operator monitors steam pressure, condenser vacuum, and other parameters on the gauges.
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The bridge contained a compass, engine-order telegraph, gyro repeater, and helm. Behind the bridge on the starboard side was the chartroom while the radar room with a fathometer was on the port side. In the aft section of the bridge deck were communications rooms that received and sent communiqués.