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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.
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.
Printing telegraph, electrical telegraph that uses plain text instead of code; Optical telegraph, sending visual signals with pivoting shutters in towers; Hydraulic telegraph, based on the displacement of water in pipes, or on container water levels; Engine order telegraph, device on a ship used by the pilot to signal engine speeds
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.
A system was needed to signal to an engine house at Camden Town to start hauling the carriages back up the incline to the waiting locomotive. As at Liverpool, the electric telegraph was in the end rejected in favour of a pneumatic system with whistles. [9] Cooke and Wheatstone 5-wire telegraph cable in a wooden spacer
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 ...