Definition of "fathometer" []

• A depth finder that uses sound waves to determine the depth of water. (noun)

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• "The fathometer was the only operable piece of equipmentdespite having stopped working briefly right after the attackbut the depth finder could do little to guide the injured Liberty."
• "The ships fathometer, which for a while only functioned on the hundred-fathom scale, revealed the Liberty entering shallow waters."
• "A fathometer and a compass were bolted to the overhead."