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Speedometer

(12 products)

A speedometer, also called a speedometer or log, is an essential boating accessory that allows you to monitor your speed on the water and better estimate travel times. It consists of a display unit and a speed sensor, which is mounted differently depending on the boat type.

  • How a nautical speedometer works

    The speedometer uses the current flowing through the boat to drive an impeller or paddlewheel. Magnets in a coil generate an electrical voltage, which is digitally displayed on the screen in knots or kilometers per hour. In addition, daily and total distances can be read in nautical miles or kilometers.

  • GPS-based speed measurement for accurate navigation

    While traditional speedometers measure speed through the water, connecting to GPS devices allows you to measure ground speed. Connecting to the NMEA network also allows you to integrate wind data to further optimize navigation.