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A ship's wheel or boat's wheel is a device used aboard a ship, boat, submarine, or airship, in which a helmsman steers the vessel and control its course. Together with the rest of the steering mechanism, it forms part of the helm (the term helm can mean the wheel alone, or the entire mechanism by which the rudder is controlled [ 1 ] ).
Steering a ship effectively requires skills gained through training and experience. An expert helmsman has a keen sense of how a particular ship will respond to the helm or how different sea conditions impact steering. For instance, experience teaches a helmsman the ability to correct the rudder in advance of a ship substantially falling off ...
A rudder is a primary control surface used to steer a ship, boat, submarine, hovercraft, airship, or other vehicle that moves through a fluid medium (usually air or water). On an airplane , the rudder is used primarily to counter adverse yaw and p-factor and is not the primary control used to turn the airplane.
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[2]: p.173 The helmsman himself still usually did not stand on the topmost deck, but rather viewed what lay ahead of the ship through a small port or hatchway in the deck above him called a companion. To move the ship to port, the forward-facing helmsman pulled the top of the staff to his left and pushed the pole down and to the right; to move ...
[1] 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.
Jesus of Lübeck of 1544 was a ship of 700 long tons (780 short tons; 710 t), the same as the Mary Rose. [7] However, how similar later medieval hulks were to their ancestors is unknown. There is some evidence of hybridization with the cog form, showing both hulk and post-construction. [ 8 ]
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