Ocean explorer's aid - Crossword Clue

Below are possible answers for the crossword clue Ocean explorer's aid.

5 letter answer(s) to ocean explorer's aid

SONAR
  1. 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"

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