Comparing: Kirovets-1 vs. WZ-111

The Kirovets-1 project (IS-3, prototype No. 1) was developed from July through November 1944. The prototype was built at the Chelyabinsk Kirov Plant in September–October 1944. From December 18 through December 24, 1944, the vehicle underwent trials at the NIBT proving grounds in Kubinka. After it was decided to manufacture a pilot series of the modified IS-2 with a hull proposed by engineers of Plant No. 100 and Сentral Research Institute-48, the work on the Kirovets-1 was discontinued.

Development of the heavy tank prototype on the basis of the Soviet IS-2 and IS-3 began in the early 1960s under the influence of the T-10. The vehicle was supposed to modernize the armored forces of the PLA. The trials revealed multiple faults, and the development of the vehicle was discontinued in 1964.