echo sounder

British  

noun

1. a navigation and position-finding device that determines depth by measuring the time taken for a pulse of high-frequency sound to reach the sea bed or a submerged object and for the echo to return

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Other Word Forms

• echo sounding noun

Example Sentences

Deep Sea Vision had first put to sea in September 2023 from Papua New Guinea, launching a $9-million Hugin 6000 submersible equipped with a Doppler, a magnetometer, an echo sounder and a side-scan sonar.

From Los Angeles Times • Nov. 8, 2024

“This is as exciting as it's going to get,” Warren joked as he dropped the echo sounder overboard.

From Scientific American • Mar. 14, 2023

We were more than halfway through the survey before the echo sounder detected any krill—a patch of the crustaceans suspended above the seafloor in the shallow waters of the embayment.

From Scientific American • Mar. 14, 2023

In the chart-room, two men tried to pick out the channel with an echo sounder.

From Time Magazine Archive

It is called multibeam echo sounder technology and it can provide a 3-D topographical map of the ocean floor and any structures, including shipwrecks, that are lying there.

From "Shipwrecked!" by Martin W. Sandler