About the Japanese I-400-class Submarine
The largest submarine that was in service during the Second World War. Three special attacking machines "SEIRAN" can be installed, also commonly referred to as a submarine aircraft carrier.
It is a huge submarine with a total length of 122 m, and the cruising range extends to the Earth one and a half weeks.
At the end of the war, the Allies did not know their existence until the surrender of Japan. Immediately after the war the American military has anecdotal that the American military officers were amazed at their size. After the investigation by the US military, it was sea floor disposal by a torpedo off Hawaii. After that, it was discovered by an American investigator in the ocean floor of southwest of Oahu in August 2013
Drainage basis 3,530 tons underwater 6560 t
Total length 122m
Full width 12m
Cruising distance 37500 nautical miles
Crew 157 people