STUDY IN SONAR U.S. Navy 1st Class Mark Osborne supervises two sonar technicians aboard the USS Momsen, under way in the Pacific Ocean, Jan. 26, 2008. The Navy is launching a new Web site to explain the importance of sonar and its low impact on marine life. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 176572-I-GDE61-489.jpg Photo Gallery