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fathometer    

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  • Echo sounding - Wikipedia
    Since a historical pre-SI unit of water depth was the fathom, an instrument used for determining water depth is sometimes called a fathometer Most charted ocean depths are based on an average or standard sound speed
  • Fathometer: What is it? - Unacademy
    A fathometer is a device that measures the depth of water by measuring the time it takes for a sound wave to travel from the surface to the bottom and for its echo to be returned
  • Fathometer - Engineering and Technology History Wiki - ETHW
    In 1925, the Submarine Signal Company of Boston developed the first fathometer, known as the 312 fathometer, to chart the depth of water while a ship was moving The fathometer proved more precise and easier to use than previous sounding methods, making it a vital tool for surveying the oceans
  • FATHOMETER : ECHO-SOUNDING - IDC-Online
    A Fathometer is used in ocean sounding where the depth of water is too much, and to make a continuous and accurate record of the depth of water below the boat or ship at which it is installed
  • Sonar Throwback: Reginald Fessenden and the Fathometer
    Fessenden's Fathometer finally allowed mariners to read the water depth in real-time when underway The Fathometer was a huge success, and thousands of ships worldwide adopted this new echosounder technology, setting the stage for modern depth sounders and fish finders
  • Fathometer vs. Bathometer — What’s the Difference?
    A fathometer is an electronic device used to measure water depth using sonar, ideal for navigation and fishing, whereas a bathometer is a mechanical instrument primarily used for measuring water depth in oceans and lakes without sonar
  • History: Historical Documents: Radio Talk on Echo Sounding: NOAA Office . . .
    Through his amplifier coupled with his invention of the Fathometer, an electro-mechanical sounding instrument, he was able to develop a means of measuring both very shoal water and very deep water with the same instrument
  • Depth sounders, fathometers, marine electronics - PSICOMPANY
    A Depth Sounder or fathometer, both being a specialized type of echo sounding system, a type of Active SONAR ('Sounding' is the measurement of water depth, a historical nautical term of very long usage ) The Depth Sounder uses active sonar to detect fish and 'the bottom' and displays them on a graphical display device, generally a LCD or CRT
  • Fathometer | trade name measurement device | Britannica
    Sound waves emitted by or reflected from the object are detected by sonar apparatus and analyzed for the information they contain Sonar systems may be divided into three categories In active sonar systems an acoustic projector generates a sound wave that spreads outward and is reflected back by a target object
  • What is a fathometer? - Answers
    Basic Concept: Fathometer surveys determine water depths by repeatedly transmitting seismic energy through the water column and recording the arrival time of the reflected energy from the water





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