- The IS-3 tank presented by Kirov Factory passed the 500 km long proving grounds trials. It did not pass the 1000 km warranty trial due to the fan breaking at 810 km.
- The performance characteristics and reliability of mechanisms and assemblies of the IS-3 tank is equivalent to that of the mass production IS-122 tank.
- The ballistics trials of the IS-3 hull demonstrate its obvious advantages over the hull of the IS-122 tank.
- The modernized IS-3 tank is recommended for service under the condition that the defects in this report be resolved.
Sunday, 22 May 2016
IS-3 Green Light
Deputy Chief, Scientific and Experimental Department of the NIBT Proving Grounds, Engineer-Colonel Sych
Chief of of the Tank and SPG Testing Department, Engineer-Lieutenant-Colonel Ivanov
Deputy Chief of of the Tank and SPG Testing Department, Guards Engineer-Major Bylinyak
Senior Assistant of the Chief of of the Tank and SPG Testing Department, Engineer-Lieutenant-Colonel Pankin
Senior Assistant of the Chief of the Armour, Armament, and Optics Testing Department, Grachev."