Type 4 Ha-To
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History and design
The Type 4 Ha-To was conceived as a mobile fire support platform in late 1943. It made use of the already existing Type 3 300 mm heavy mortar mounted on a modified chassis that was based on the one used for the Type 4 Chi-To medium tank and on the Type 4 Chi-So armored medium tracked carrier.[1]Template:SfnTemplate:Sfn The armor was "thinner" than the Chi-To and the engine compartment was moved to the front.Template:Sfn The mortar had a range of 3,000 m (1.9 mi) and launched a 170 kg (374 lb) projectile. The gun itself weighed close to 1.5 tons, and to keep the center of gravity from shifting and tipping the vehicle over, it could not be elevated more than 50 degrees. For transportation the barrel was laid horizonal and when set to fire, the rear and baseplate were lowered down to the ground.Template:Sfn
The first prototype was completed in late 1944 and taken to the Imperial Japanese Army Academy for testing. Although testing indicated that it would be an effective weapon, it was expensive to produce, and the Japanese Army Technical Bureau shifted its attention to self-propelled multiple rocket launchers instead, which were easier to produce.[1]Template:Sfn
An additional three units were produced before the surrender of Japan, but none were used in combat.Template:Sfn
Notes
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References
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External links
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