Comparing: WZ-111 vs. KV-5

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.

Development began in June 1941 at the Leningrad Kirov Plant and was completed by August, but plans were interrupted due to the complicated situation on the front. The KV-5 was to utilize some components of the KV-1. A new turret was designed, incorporating the 107-mm ZIS-6 gun. Two roadwheels and a single support roller were to be added on each side. A new 1,200 h.p. diesel engine was being developed for the vehicle, however it was not completed in time and was replaced with two V-2K engines.