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The higher the angular momentum, the greater the resisting force of the gyro to external torque (in this case more ability to cancel boat roll). A gyroscope has three axes: a spin axis, an input axis, and an output axis. The spin axis is the axis about which the flywheel is spinning and is vertical for a boat gyro.
In a boat, the equivalent of the spring stiffness is the distance called "GM" or "metacentric height", being the distance between two points: "G" the centre of gravity of the boat and "M", which is a point called the metacentre. Metacentre is determined by the ratio between the inertia resistance of the boat and the volume of the boat. (The ...
A few of the early boats suffered problems such as fuel leaking under the floor of the engine room around hydraulic lines. These boats were recalled and the problems rectified. The 27th and last Tamar-class lifeboat, allocated to The Mumbles, was launched 12 March 2013 in Devonport Dockyard and after sea trials was handed over to the RNLI on 21 ...
The steering engine is open to public view. A functional description is given in the 1965 book Str. Belle of Louisville, by Alan L. Bates, the marine architect who supervised the restoration of the boat, who comments that when in use, the steering engine causes the pilot wheel to whirl "as fast as an electric fan." The same source also ...
Generally, a rudder is "part of the steering apparatus of a boat or ship that is fastened outside the hull, " denoting all types of oars, paddles, and rudders. [1] More specifically, the steering gear of ancient vessels can be classified into side-rudders and stern-mounted rudders, depending on their location on the ship.
The fundamental cause of "helm", be it weather or lee, is the differential between the center of effort of the sail plan to the center of lateral resistance of the hull. If the center of pressure is astern of the center of lateral resistance, a weather helm, the tendency of the vessel to want to turn into the wind, or to weather-vane, will result.
There were seven crewmen on board. The boat was last detected at 1.05 pm some 57 nautical miles off Labuan Island. The boat was found on October 6 near Station Lima, after its distress call was heard by KD Paus, a Jerung-class gunboat, with no injuries to all 7 crew. It was reportedly caused by engine and steering problems.
A series of more advanced designs were introduced, especially through World War II, that maintained power to both tracks during steering, a concept known as regenerative steering. Some also allowed one track to move forward while the other reversed, allowing the tank to spin in place, a concept known as neutral steering .