echo sounder

echo sounder

n.

A device for measuring depth of water by sending pressure waves down from the surface and recording the time until the echo returns from the bottom.

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echo sounder

Noun

a navigation device that determines depth by measuring the time taken for a pulse of sound to reach the sea bed and for the echo to return

Thesaurus

Noun

1.

echo sounder - a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return; "sonar is an acronym for sound navigation ranging"; "asdic is an acronym for antisubmarine detection investigation committee" asdic, sonar measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something navigational instrument - an instrument used for navigating pinger - a pulse generator used for echo sounding in sonar pulse generator - a generator of single or multiple voltage pulses; usually adjustable for pulse rate pigboat, submarine, U-boat, sub - a submersible warship usually armed with torpedoes