High Quality Content by WIKIPEDIA articles! The Type 3 Ka-Chi (??????, Toku-san-shiki uchibiteikami?) was an amphibious medium tank developed by the Imperial Japanese Navy in World War II. The Type 3 Ka-Chi was based on an extensively modified Imperial Japanese Army Type 1 Chi-He tank and was a larger and more capable version of the earlier Type 2 Ka-Mi amphibious tank.The success of the Type 2 Ka-Mi design pleased the planners in the Imperial Japanese Navy General Staff, and it was determined that a larger version with stronger armor and armament would be useful in future amphibious warfare operations as well as special forces missions. Type 3 Ka-Chi was developed in 1943, and the first units entered service in late 1943-1944. However, only 19 Type 3 Ka-Chi's were built from 1943 to 1945. The main priorities of the Navy were in warship and aircraft production, and lacking in any definite plans for additional amphibious operations, production of the Type 3 Ka-Chi remained a very low priority.