Kagero Although it was unable to serve in combat, the Type XXI U-boat was a rare weapon that drastically changed the character of naval actions at sea. It was considered the first true submarine in history, and it was designed from the outset as a true submarine whose natural environment was to be the deep seas. Learn all about this spectacular submarine through this fascinating read. 60 pages, 152 photos, 12"x 8", softcover.
