This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
SONAR stands for SOund Navigation And Ranging. it is a device installed in ships and submarines. it uses ultrasonic waves to measure the distance, direction and velocity of an underwater object. it has a transmitter and a detector. the transmitter transmits the wave and after striking the object, it gets reflected back and is sensed by the detector. the detector then converts it into electrical signals which are appropriately interpreted. 
hope it's useful. if yes then mark as the brainliest
friends thoda Hindi language me