The Type 4 Chi-To medium tank was one of several new medium tank and heavy tanks developed by the Imperial Japanese Army towards the end of World War II. The Type 4 Chi-To was by far the most advanced Japanese wartime tank to reach the production phase.
The Type 4 Chi-To was a thirty ton, all-welded medium tank with a maximum armor thickness of about 75 millimeters (3.0 in). It was much larger than the Type 97 Chi-Ha, with a longer, wider, tall chassis, supported by seven road wheels.
The main armament, a Type 5 75 mm tank gun, was based on the Type 4 75 mm AA Gun, which was based on the Bofors Model 1929 75mm AA gun. It had a barrel length of 56.4 calibers and was housed in a large powered, well-armoured hexagonal gun turret along with a coaxial machine gun. A single Type 97 light machine gun was also mounted in the bow, but there was no machine gun mounted to the rear of the turret, which is unusual for Japanese tanks. Provision was also made for an optional anti-aircraft machine gun.| Type 4 Chi-To | |
|---|---|
| Place of origin |  Empire of Japan |
| Production history | |
| Designed | 1942–1944 |
| Number built | 2 |
| Specifications | |
| Weight | 30 tonnes (30 long tons; 33 short tons) |
| Length | 6.73 metres (22.1 ft) |
| Width | 2.87 metres (9 ft 5 in) |
| Height | 2.87 metres (9 ft 5 in) |
| Crew | 5 |
| | |
| Armor | 12–75 millimetres (0.47–3.0 in) |
| Main armament | Type 5 75mm gun |
| Secondary armament | 2 × Type 97 Light Machine Guns |
| Engine | Mitsubishi AL Type 4 Air-cooled V12 Diesel engine with supercharger 412 hp/1,800 rpm/37,700 cc |
| Suspension | Bell crank |
| Operational range | 250 kilometres (160 mi) |
| Speed | 45 kilometres per hour (28 mph) |
