The Type 2 Ho-I was a self-propelled gun used by Japan during World War II.


The Ho-I was more of a mix between a self-propelled gun and a medium tank. It had an air-cooled, diesel powered, Mitsubishi Type 100 engine capable of propelling the Ho-I at speeds of up to 44 km/h.[1] The armor protection was between 12 and 50 mm and the Ho-I required a crew of five. The length was 5.7 meters and the weight was 16,100 kg. The height of the Ho-I was 2.5 meters and the width was 2.3 meters.[2] The Ho-I was armed with a 75 mm main gun and a 7.7 mm Type 97 machine gun. It also had a Bell Crank suspension system and it had an operational range of 99.7 kilometers. The turret was based on the Type 97 Chi-Ha and it only fired HE rounds.

The turret of the Type 2 could also fit two crew members and the chassis of the Type 2 was based on that of the Type 1 Chi-He. The Type 2 could even carry about 4,000 rounds for its machine gun and about fifty-five for its main gun. There were no variants of the Type 2 and the reliability testing of the Ho-I showed that the platform chosen and modifications worked well together and overall the Ho-I would have been a solid weapon in the Japanese arsenal.


The Type 2 Ho-I's development began in 1937 and it became clear that a larger caliber gun would be helpful in certain situations. The 47 mm main guns of the armored vehicles of the time were too small and so a Type 41 75 mm mountain gun was added. The Type 2 began production in 1942 and since Allied tanks had much thicker armor than Japanese tanks, the Type 2 Ho-I was appointed to a tank killing role. The thirty models that were produced were all sent to the Japanese Home islands to protect from an Allied invasion and as such, they never saw combat.



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