About the Japanese I-400-class Submarine
The largest submarine used during World War II.
Also called a submarine aircraft carrier, we were able to carry three special attack aircraft "SEIRAN" on board.
It is a huge submarine with a total length of 122 m and has a range of 69,450 km.
At the end of the war, the Allied forces did not know the existence of the i400 until the Japanese surrender.
Shortly after the war, there are anecdotes that American military officers were surprised at the size of the i400.
After an investigation by the US military, the i400 was subjected to torpedo disposal off the coast of Hawaii. Then it was discovered by American researchers at the bottom of southwestern 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