The man who led the salvage efforts to raise a sunken US Navy submarine recounts the mission in a tale "that will surely rank among the epics of the sea" (The Philadelphia Inquirer). The sinking of the submarine S-51 was one of the greatest tragedies in American naval history. Due to a miscommunication and subsequent collision between the sub and a passing steamship on a September night, the S-51, including thirty-three of its crew of thirty-six, sank to the ocean depths. The tragedy of the S-51 captivated the nation, and was a fixture in the pages of American newspapers. The story took on a whole new dimension when the navy decided to take over the salvage of the thousand-ton behemoth from a civilian company.   Heading the crew tasked with this impossible feat was Edward Ellsberg, at the time a lieutenant commander. On the Bottom is Ellsberg's account of the successes and failures he and his men experienced as they attempted an astonishing feat of engineering and bravery: the first salvage of a submarine from the open ocean.