The IJN I-400 Class submarine was the largest submarine in WW Ⅱ and the largest in the world until the development of nuclear submarines in the 1960s.I-400 had enough fuel to go around the world one and a half times and was able to carry 3 Aichi M 6A 1“Seiran” aircraft that could be assembled for flight within minutes. One of their missions, which was never carried out, reportedly was to use the aircraft to drop bacteriological bombs on U.S. cities. However the bacteriological bombs could not be prepared in time .Later, a mission was to bomb the Panama Canal to cut the supply lines of Allied forces but canceled at last. The I-400 and I-401 were captured at sea a week after the Japanese surrendered in 1945. Parament Item No 87017 Item Name Japanese I-400 class Submarine Bar Code 6939319270177 Scale 1:700 Item Type Static kit Model Dimension ●Length: 173.9mm ●Beam: 17.4mm ●Height: 29.9mm Total Plastic Parts 21pcs Total Sprues 1 sprue, upper, lower hull, stand Camouflage Scheme Japanese Navy I-400 Released Date 2007-12 More Features with display stand and the name plate in silk-screen, with Aichi M6A1 Seiran aircraft.