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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.
The navigation bridge of the Titanic. On the Titanic, the navigation bridge (or command bridge) was a superstructure where the ship's command was exercised.From this location, the officer on watch determined the ship's geographical position, gave all orders regarding navigation and speed, and received information about everything happening on board.
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.
A teleprinter is a telegraph machine that can send messages from a typewriter-like keyboard and print incoming messages in readable text with no need for the operators to be trained in the telegraph code used on the line. It developed from various earlier printing telegraphs and resulted in improved transmission speeds. [36]
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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 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.