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.
[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.