so Yamamoto devised the submarine aircraft carrier idea as a means to get close to American cities without being detected.

Submarines Have Their Day HMS Courageous was the first modern aircraft carrier to fall victim to a submarine.On September 17, 1939, while hunting German U-boats, Courageous was torpedoed and sunk ...

Over 70 years ago, the Imperial Japanese Navy’s prized Sen Toku I-400-class submarine aircraft carriers were captured and scuttled off the coast of Hawaii. Now a team from the University of ...