Type 5 To-Ku
The Special Type 5 Launch To-Ku (特五式内火艇 トク, toku-go-shiki uchibitei To-Ku) was a Japanese prototype amphibious tank developed in 1945.[2] The development status by the end of the Pacific War is not clearly known. The To-Ku was large and heavy; it boasted extensive armor protection with 50 mm of armor plate in the front hull. The turret was a modified version of the one used on the Type 97 Shinhoto Chi-Ha medium tank that was fitted with a Type 1 25 mm gun and a rear facing Type 97 7.7 mm machine gun.[3] The front hull mounted a Type 1 47 mm tank gun and a Type 97 7.7 mm machine gun.[4] The chassis was based on the Type 5 Chi-Ri medium tank and the suspension, pontoons and propulsion system were substantially the same as the Type 3 Ka-Chi.[3] According to one source, a prototype was completed by the end of the war.[2] According to another source, a prototype was not completed by the end of the war.[5] NotesReferences
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