U.S. Navy Petty Officer 2nd Class Daniel Clarke launches a towfish side scan sonar system from the littoral combat ship USS Fort Worth’s rigid hull inflatable boat in the Java Sea, Jan. 4, 2015. Clarke is a diver assigned to the Mobile Diving and Salvage Unit 1. U.S. Navy Petty Officer 2nd Class Daniel Clarke launches a towfish side scan sonar system from the littoral combat ship USS Fort Worth’s rigid hull inflatable boat in the Java Sea, Jan. 4, 2015. Clarke is a diver assigned to the Mobile Diving and Salvage Unit 1. SHARE: Download: Full Size (2 MB) Tags: photo essays Credit: VIRIN: 575577-Z-HYK47-013.jpg Photo Gallery