How does Sonar Mapping Work? and who uses it?

Question

How does Sonar Mapping Work? and who uses it?

Answer 1

Try this link;

http://earthguide.ucsd.edu/earthguide/di...

Answer 2

it is used by the Military,commercial and the fishing fleet, sonar stands for SOund Navigation And Ranging, the powerful sonar is used by the military to search for targets, Commercial ships use it for helping navigation by checking the depth of the water when inshore, and fishing fleets us it for finding shoals of fish