Then comes the time when a successor is built. In this case that is the Strithdrekar 4. Built to match the Patner and the T-34-85.
Now I`ll move other to producing some heavies.
The first heavy tank was a pure experimental tank.
The first to be put into service was the SkDT 2. It was armed with a 90mm gun and was slightly less armored than the Tiger. Anticipating the arrivel of the Losif Stalin tank, the tank was given a new turret, and a new 105mm gun that hopefully would with new ammo pierce the new tanks. The armor was also increased. The SkDT 2 and the IS never met at the battlefield as most, if not all of the IS were sent to fight Germany.