Question

what is SONAR ?
write its uses

Answer 1

Sonar (originally an acronym for SOund Navigation And Ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels.

Answer 2

SONAR is a short form of sound, navigation and ranging.
It is used to determine the depth of the sea.
IT is also used to see underwater objects like submarine, icebergs,sunken ships,etc