Comparing: Object 777 Version II vs. 113

The Object 777 is a unique project of a heavy tank. The vehicle was developed at the Chelyabinsk Kirov Plant. By 1953, the design plans were made, and the dummy vehicle was built. The prototype was to feature a cast hull and streamlined turret. The 122-mm M-62-T2 gun was to be mounted on the tank. However, development proceeded no further. The Object 777 never entered mass production nor saw service.

Development on model 113 was started in 1963. The vehicle was conceived as an alternative to WZ-111 and used parts and components of medium tanks. However, the project was canceled due to the development of main battle tanks.