Type 4 Ha-To file photo [13184]

Type 4 Ha-To

Primary RoleSelf-Propelled Gun


ww2dbaseIn late 1943, a development effort was begun to provide a self-propelled platform for the Type 3 300-millimeter heavy mortar. The Type 4 Ha-To design was completed by using the chassis of the Type 4 Chi-To medium tank, albeit extensively modified, to achieve this goal. The prototype was completed in late 1944 and was taken to the Japanese Army Academy for testing. It was discovered that it had an effective range of 3,000 meters when launching 170-kilogram projectiles; the gun could not elevator more than 50 degrees as the vehicle had a danger of tipping over beyond that elevation. Although the results of the Type 4 Ha-To tests showed the weapon as being very promising, the Japanese Army decided that the design was too costly to produce. Three additional prototypes were built, but the design never entered full scale production.

ww2dbaseSource: Wikipedia

Last Major Revision: Jul 2011


Type 4 Ha-To
MachineryOne Mitsubishi 6-cylinder water-cooled gasoline engine rated at 115hp
SuspensionBell crank
Armament1x300mm Type 3 mortar
Length6.80 m
Width2.40 m
Height2.75 m
Weight14.3 t
Speed40 km/h


Prototype Type 4 Ha-To self-propelled heavy mortar, date unknownPrototype Type 4 Ha-To self-propelled heavy mortar, post-war

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Type 4 Ha-To Self-Propelled Gun Photo Gallery
Prototype Type 4 Ha-To self-propelled heavy mortar, date unknown
See all 2 photographs of Type 4 Ha-To Self-Propelled Gun

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