This vehicle is a modification of the IS-2, developed from the early 1950s through the early 1960s. Before the T-10's development, the IS-2 was the main Soviet heavy tank. It remained in service until the mid 1990s. The tank chassis, power unit and turret were significantly changed. Some chassis components were adopted from the IS-3, as well as the splash shields and spare parts kit. The rear machine gun was removed from the turret. It was replaced with an additional fan for the fighting compartment. All gun embrasures were sealed. In addition, the standard engine was replaced with the V-54K-IS engine. The ammo capacity was increased to 34–35 shells, while the standard gun (the 122 mm D-25) remained unchanged. However, the gun elevation mechanism was improved. Some vehicles were equipped with the TVN-2 night-vision devices. Besides this, the new R-113 radio was equipped instead of the standard one. In addition, the driver's observation devices were improved.
This is a Premium vehicle. Premium vehicles earn more credits and experience per battle, and provide a range of other bonuses.
Time for the successive autoreloading of each shell into the magazine.
The improved system allows the time to be decreased for autoreloading the next shell upon firing the loaded shell when the corresponding indicator is displayed
Characteristics are specified for Siege mode.
The technical characteristics are displayed for the charged turbine mode.
Characteristics are specified for Rapid mode.
Reload time of the first and second guns on double-barreled vehicles.
Characteristics are specified for vehicles with crews trained to 100%.