A history of submarines: from U-boat to Dreadnought

U-BOAT WARFARE 1939-1945 (C 4081) U-boat Losses: U 426 a Type VIIC submarine, down by the stern and sinking, after attacks by a Short Sunderland flying boat. Copyright: © IWM. Original Source: http://www.iwm.org.uk/collections/item/object/205194306