I-400 "Japan underwater secret weapons"

  During the second world war, the Japanese Imperial Navy developed a secret weapons called the "I-400", the machine itself is part of Adm.Yamamoto masterplan after the attack on Pearl Harbor, during the attack the Japanese humiliated the strong U.S naval base in the Pacific Hawaiian island and cause heavy damage's. The other plan of Yamamoto is to attack and terrorize the mainland city of the United States and force the U.S to capitulate. During the time after the attack occurred, the U.S navy were on the peak of alert, mean's that any attempt to attack the U.S mainland by the Imperial Japanese fleet is considered to be an impossible mission. The Admiral himself decided that the attack would be done by the submarine's which would sneak under the depth of the ocean and the U.S forces patrol above, he would use the submarine to execute an "hit and run" tactics to the U.S western coast and cities,which in his mind would deteroriate the U.S means of an all out war with the Japanese and forced them to move back, giving the Japanese the undisputed power in the Pacific region. He then call's the Japanese naval engineer's to design a submarine capable of carrying bombers, by the time there were already some sub's carrying airplane, but still it's not enough to carry the enoug armament and gas to reach America, instead he insisted of a new design of aircraft carrying submarine.

To be continued......