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(Nautical Terms) trademark a type of echo sounder used for measuring the depth of water
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Noun1.fathometer - depth finder for determining depth of water or a submerged object by means of ultrasound waves
depth finder - navigational instrument used to measure the depth of a body of water (as by ultrasound or radar)
References in periodicals archive ?
Presolicitation: Purchase Of Two New Fathometers & One Three Degree Tranducer U.
Mass aggregations can be detected by standard fathometers used by commercial fishermen, who report that mass aggregations on the sea floor are rare in Monterey Bay.
One of the points that emerges from Hutchins's discussion of (modern) Western and Micronesian navigational methods in chapter two is the extent to which Western navigation has become heavily dependent on technology: alidades, bearing logs, hoeys, charts, radar, pit swords, chronometers, and fathometers are all specially developed or deployed cognitive artifacts that allow vessels controlled by Western navigators to complete their journeys.