IS-7

IS-7
IS-7 in the Kubinka Tank Museum with an IS-4 in the background
Type	Heavy tank
Place of origin	Soviet Union
Production history
Designer	Nikolai Fedorovich Shashmurin[1][2]
Designed	1945[1]
No. built	6 (prototypes)[3]
Specifications
Mass	68 t (67 long tons; 75 short tons)[4]
Shell weight	~33 kg (73 lb) (shell only)
Caliber	130 mm[3]
Barrels	1
Action	breech loaded[3]
Rate of fire	6-8 rpm (Ready rack)[3]
Muzzle velocity	~900 m/s (3,000 ft/s)[3]
Main armament	130 mm S-70[4][3]
Secondary armament	2 x 14.5 millimetres (0.57 in) KPVT (1 coaxial, 1 AA)[1][3] 2 x SGS MG (hull, forward-facing)[1] 2 x SGS MG (turret, rear-facing)[1] 2 x SGS MG (coaxial) [1][3]
Engine	M50T V12 diesel[1] 1,050 hp (780 kW)[1]
Suspension	torsion bar[1]
Operational range	300 km
Maximum speed	60 km/h
References	[1][4]

The IS-7 heavy tank, also known by its project name Object 260, is a Soviet tank that began development in 1945. The vehicle existed only in prototype form and was cancelled in favor of the T-10 tank.