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Marine Electronics

Marine electronics are a valuable asset for anyone from simple lake fishers to the U.S. Navy. A marine GPS is a sample of an important marine electronic which uses orbiting satellites to determine exact locations while on water. One widely used electronic is that of a VHF radio. A VHF radio stands for very high frequency and it is a handheld device used for summoning rescue services, and communicating with harbors. It is also useful in avoiding collision through communication between boats. An autopilot system is a mechanical, electrical or hydraulic system used to guide a boat without assistance. Other types of marine electronics include sounders and radar.
            Radar, another useful tool while sea bound is an acronym that stands for Radio Direction and Ranging. Radar generates active radio pulses that bounce off of objects to which the user was aiming. This was widely used during the war and became a popular way of being able to see in the dark. The Doppler shift is the primary source for which radar functions. The number of pulses correlates with the distance from point A to point B.  
            Sonar is similar but uses sound navigation and ranging. It is used for the same purposes as communicating, navigating and detecting other vessels. Sonar is a marine electronic that emits pulses of sounds and listens for the echo to determine distance or depth. Many sonar devices vary in frequency power from very low infrasonic to very high ultrasonic waves.
            Some electronics are smaller and can be used for a more personal, recreational use. A fishfinder is a prime example of how one may enhance their fishing game by use of an electronic locator. Or one may use a marine GPS to navigate a course and minimize the chances of losing direction, or becoming unreachable.