Ocean Depth Calculation Using Sonar

[tdk]

The speed of sound in water is 1498 m/s. A sonar signal is sent from a ship at a point just below the water surface and 1.80 s later the relfected signal is detected. How deep is the ocean beneath the ship?

 

[berkeman]

Please show us your work so far, so that we can help you with this problem.

 

[HallsofIvy]

If "h" is the ocean depth how far did the sound have to travel so that the reflected signal was heard?