Submarines features the most significant submarines built, from the German U-9 - which sank three British cruisers on September 22, 1914 - to the huge Japanese I-400 class and the great nuclear-powered submarines of the Cold War, such as USS Los Angeles and the Soviet Oscar class. Also included are the 'undersea cruiser' Surcouf; the highly successful Type VII U-boats of World War II; and the latest attack and ballistic missile submarines, such as HMS Astute, USS Virginia, the Chinese Type 094, and the Russian Yasen class. Each entry includes a brief description of the submarine's development and history, a color profile or cutaway, key features, and specifications.