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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 feature of the Baudot code, and subsequent telegraph codes, was that, unlike Morse code, every character has a code of the same length making it more machine friendly. [38] The Baudot code was used on the earliest ticker tape machines ( Calahan , 1867), a system for mass distributing information on current price of publicly listed companies.
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.
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 ...
Helm orders would be passed to an enclosed wheel house, where the coxswain or helmsman operated the ship's wheel. 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 ...
The telegraphs connected to Titanic's engine room were used by the officer of the watch or the commanding officer to communicate any orders concerning forward and astern speed. Forward, the possible orders were, in ascending order of power, Dead Slow, Slow, Half, Full. The "STOP" command instructed the engine room to stop propeller rotation.
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 ...
The numbers must be looked up at the receiving end making this a slow process, but in the era when telegraph was widely used, skilled Chinese telegraphers could recall many thousands of the common codes from memory. The Chinese telegraph code is still used by law enforcement because it is an unambiguous method of recording Chinese names in non ...