Silent killers : submarines and underwater warfare /James P. Delgado.

"Silent Killers traces the history of the most deadly hunter in the ocean. For hundreds of years the submarine has stalked prey ranging from the ironclads of the American Civil War through to the vulnerable Atlantic Convoys, which were torn to shreds by packs of U-boats during World War 2, and to this day nuclear-powered subs prowl the depths."--