History of Wartime Submarines

Modern submarines have more firepower than all the bombs used in WWII. They carry 24 ballistic missiles and warheads five times greater than the bombs dropped on Hiroshima. In 1914 the German navy possessed only 24 submarines to break the British supply lines. This documentary takes you into the beginnings of the submarine (U-Boats), and the modern day O-Class submarines which rule the waves.