Comparing: KV-5 vs. Caernarvon

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.

Development of this infantry support tank started in 1944. The first prototype was ready for trials in 1952. A total of 21 tanks were manufactured but never entered service. Some of the vehicles were later converted into the Conqueror heavy tanks.