Comparing: IS-3A vs. 112

In 1956–1957, the Military Armored Forces Academy developed a speculative design for a new loading system on the IS-3 and T-10 heavy tanks. The IS-3 variant featured a double-row ammo rack with an automatic loading system. The crew was reduced to three members: commander, gunner, and driver. The turret was redesigned in order to accommodate the loading mechanism. The vehicle existed only in blueprints.

The development of the 112 tank started in 1962. The project was to feature parts and components of medium and heavy tanks. Existed only in blueprints. The 113 tank was a further development of the 112.