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Other vehicles may use devices analogous to the speedometer with different means of sensing speed, eg. boats use a pit log, while aircraft use an airspeed indicator. Charles Babbage is credited with creating an early type of a speedometer, which was usually fitted to locomotives. [2]
Figure 2: Illustration of a Mercury Manometer-Based Pitometer Log. The basic technology of the pitometer log is similar to that of the pitot tube on an aircraft. Typically, the pitometer has a long tube that penetrates the ship's hull near the keel.
Diagram of a chip log attached to a log-line and reel on a ship. A chip log, also called common log, [1] ship log, or just log, is a navigation tool mariners use to estimate the speed of a vessel through water.
Radar speed guns use Doppler radar to perform speed measurements.. Radar speed guns, like other types of radar, consist of a radio transmitter and receiver.They send out a radio signal in a narrow beam, then receive the same signal back after it bounces off the target object.
Navigation (from the Latin word navigatio) is the act of sailing or voyaging.Nautical (from Latin nautĭca, and this from Greek ναυτική [τέχνη] nautikḗ [téjne] "[art of] sailing" and from ναύτης nautes "sailor") is that pertaining to navigation and the science and art of sailing.
As required by COLREGS, all ships shall maintain a proper radar lookout if it is available on board to obtain early warning of risk of collision.Radar plotting with the use of an EBL and VRM, or the ARPA should be used to determine the information of movement and the risk of collision of other ships in vicinity. [4]
Secured boat loans use the boat being purchased as collateral. Terms may be as long as 20 years, giving you a much lower monthly payment than you would have with an unsecured loan. Most unsecured ...
In many countries, tractors are required to have a speedometer for use on a road. To save fitting a second dial, the vehicle's tachometer is often marked with a second scale in units of speed. This scale is only accurate in a certain gear, but since many tractors only have one gear that is practical for use on-road, this is sufficient.