For twenty-three years, Clive Cussler's NUMA?-the National Underwater & Marine Agency-has scoured the rivers and seas in search of lost ships of historic significance. His teams have been inundated by tidal waves, and beset by the vagaries of man and nature, but the results-and the stories behind them-have often been dramatic: The 2000 raising of the Confederate submarine Hunley made national headlines. Here, then, are more true tales of sea- and...