Type 89B I-Go Otsu | I-Go Kō - 八九式中戦車　イ号 - Footage.

Originally uploaded 1 sep. 2021 The Type 89 medium tank I-Go 八九式中戦車　イ号 was a medium tank developed by the Japanese in 1928, after the army wanted two types of tanks to be created. A light 10-ton tank based on the French Renault FT tank and a 20-ton design modeled after the Vickers Medium tank. The weight of the initial prototype and its low speed did not impress the Imperial Japanese Army General Staff Office, and a new requirement was issued for a lighter tank. By April 1928, the new light tank design was finished and the prototype of the Type 89 light tank was completed in 1929. The Type 89 would eventually be re-classified as a “medium tank“ because the weight increased to over 10 tons due to several improvements. Mitsubishi Heavy Industries, which built a new tank factory to specifically produce this model and production would began in 1931. The 89 would be the worlds first mass produced Diesel engine tank