fathometer

English

Etymology

fathom (“nautical length measurement used for depth”) +‎ -meter

Noun

fathometer (plural fathometers)

(nautical) A depth finder that uses sound waves to determine the depth of water.
- 1977, Richard O'Kane, Clear the Bridge: The War Patrols of the U.S.S. Tang, Ballantine Books, published 2003, page 347:
  A Fathometer is just a vertical echo-ranger; its pings would sound the same and could drive a submarine out of position just as effectively as horizontal echo-ranging and might even make a contact.

Translations

depth finder

Finnish: kaikuluotain, kaiku (fi)
Indonesian: fatometer (id)
Malay: fatometer

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