The U-boat Century: German Submarine Warfare, 1906-2006

Len's Summary: A selection of the History Book Club. In 1915, U-Boats sank 555 Entente merchant vessels; in 1916, the number climbed to 1.300; and, in 1917 over 3,000 Allied vessels were sent to the bottom by U-Boats. These losses were never replicated, even in the Battle of the Atlantic in World War Two, as is pointed out by the author.