Secretive U.S. Navy Submarine Went on a Dangerous Mission Clues suggest spying in 'extremely hazardous' waters On Jan. 20, 2013, the Seawolf-class attack submarine USS Jimmy Carter left her home port in Bangor, Washington. Less than two months later, the submarine appeared at Pearl Harbor in Hawaii for repairs. It was all quite mysterious. During her time at sea, we don’t know where Jimmy Carter was or what her crew of nearly 150 were precisely doing. The Seawolf class is one of the most secretive weapons in America’s arsenal, and information about the Navy’s “Silent Service†is difficult to discover...