| Type 5 To-Ku | |
| Type: | Amphibious tank |
| Is Vehicle: | yes |
| Origin: | Empire of Japan |
| Design Date: | 1945 |
| Length: | 10.8 m (with floats) |
| Width: | 3.0 m |
| Height: | 3.38 m |
| Weight: | 29.1 tons |
| Suspension: | bell crank |
| Speed: | 32 km/h (land) 10 km/h (water) |
| Vehicle Range: | 320 km (unknown if referring to sea or land) |
| Primary Armament: | Type 1 47 mm gun |
| Secondary Armament: | 1× 25 mm gun 2× 7.7 mm Type 97 MG's |
| Armour: | 10 - 50 mm |
| Engine: | water-cooled 12-cylinder Mitsubishi diesel |
| Engine Power: | 240 hp |
| Pw Ratio: | 8 hp/ton |
| Crew: | 7 |
The was a Japanese prototype amphibious tank developed in 1945. 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. The front hull mounted a Type 1 47 mm tank gun and a Type 97 7.7 mm machine gun. 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. According to one source, a prototype was completed by the end of the war. According to another source, a prototype was not completed by the end of the war.[1]