Military Review

Heavy tank IS-4

Few people know that it was serial, although the series was small, somewhere around 250 machines, after which it was removed from production. All the fault was the excessive mass of the machine - about 60 tons.

Heavy tank IS-4

Development of this tank It began in July 1943 at the Chelyabinsk Kirov Plant under the leadership of L. Troyanov, and later - M. Balzhi. At the very beginning of 1944, the designed machine received the Object 701 index, and in March 1944 the project was submitted for consideration by the State Academic Technical University. The project, in general, was liked by the commission, and in April of the same year it was decided to switch to the manufacture of prototypes.

701 object with C-34-I gun.

The main idea for the creation of a new Soviet heavy tank was the idea of ​​the possibility of installing more powerful artillery systems on this machine than those on the EC-2. Therefore, an experienced 701 Object was made at once in three versions with different guns: D-25T, C-34-II and 100-mm high-power cannon C-34-I.

701 object with C-34-II gun.

Testing machines took place before the fall of the year 1944. And as usually revealed a lot of design flaws. But also the car had one indisputable advantage, its 160 mm frontal armor could not penetrate any tank or anti-tank gun of both the Soviet and German production. Of the weapon systems, the 122 and the C-34-II cannon best showed themselves.

At the end of 1944, two more cars were produced, on which a modernized transmission was installed. After testing these machines, it was considered that the tank was quite ready for mass production. It only remained to decide with what instrument to release it.

EC-4 in Kubinka.

Oddly enough, the C-34-II gun was never recommended for installation in a production car. The point won was that to solve the tasks that now stand before the tank forces, the X-NUMX-mm D-122T guns already fully mastered in production, and to arm a new-generation heavy tank, you need to switch to 25 mm or even X-guns. set 130 mm gun was done on the tank EC-152).

EC-4 at the site, somewhere in the Far East.

In April 1945, the tank was put into service and put into mass production under the IS-4 index. The hull of the vehicle was welded and the turret was cast with variable armor thickness. In addition to the aforementioned 122 mm D-25T cannon, the armament included a 12,7 mm machine gun paired with it. The same machine gun was installed as an anti-aircraft gun on the turret above the loader's hatch. One of the vehicle's features was the original ammo rack. In the IS-4, the shells were placed in special metal cassettes, which are clearly visible in the photo. The tank had a planetary transmission, an individual torsion bar suspension. The tank's crew was 4 people. The engine was powered by a V-12 diesel engine with a capacity of 750 hp. With this engine on the highway, the tank could accelerate to 43 km / h.

Combat tank tank IS-4, well visible metal cassettes for shells.

Serial production of the EC-4 continued until the 1949 year. And basically these cars served in the Far East.

During operation, it turned out that the tank's weight exceeded the carrying capacity of most bridges and transport platforms. It is this reason that actually buried the idea of ​​building machines weighing more than 50 t. The EC-4 was decommissioned and stored for long-term storage, and then removed from service. After which it was often used at landfills as a target.

Place the driver in the tank EC-4.

Place gunner in the tank EC-4.

Gun and machine gun tank EC-4.

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  1. mishan
    mishan April 21 2011 14: 13
    Ugh, a hundred of such tanks, but in skilled hands and at the beginning of the Second World War ...
    1. rvun
      rvun 8 June 2011 16: 18
      Even if there were a thousand, it would most likely have no effect on the course of hostilities. Tanks KV and T-34 at the beginning of the war had an overwhelming superiority over German tanks. It’s just that the Germans themselves prepared the war, gathered all the necessary resources, mobilized and concentrated the army, had a clear plan of action and invaluable combat experience. The statistics of the battles say that the Germans did not carry out anti-tank combat by tanks, but by anti-tank and heavy artillery and aircraft. Counter tank battles took place during the counterattacks of the Red Army, and not at the initiative of the Germans. So, most likely, at the beginning of the war they would have burned down in border battles in the first 10 days of the war. I can recommend this work, the analysis is not very biased based on factual material:
  2. fantast
    fantast April 21 2011 21: 48
    Yeah, they just do not take anything in the forehead or stop it. wink
  3. Joker
    Joker April 22 2011 14: 15
    Yes, special IS-7, the car is super.
  4. Fizik01
    Fizik01 6 June 2011 18: 31
    Yeah, they just do not take anything in the forehead or stop it.

    it’s quite possible to pierce them in the forehead with a PaK44 / 2 L / 61 gun (these were installed on Jagdtiger tank destroyers)
  5. panzersoldat
    panzersoldat 27 August 2011 22: 54
    Pak44 would have struck with only 200, 300 meters. But things are super. The truth is rather heavy, almost all were in the after-hours area and were used as self-propelled forts.
    Even better, of course, the KV-7 was, but it was too expensive to manufacture, and then the main bet was then made on thousands and tens of thousands of cheap T-55s.
    1. Joker
      Joker 27 August 2011 23: 09
      Do not confuse warm with soft, heavy tanks have a different purpose and other tasks.

      As for the program for the production of the IS-7 (and not the KV-7), it was curtailed at the beginning of the deployment of production in connection with the release of the government decree on which below. The IS-8 (T-10), by the way, had just such a weight. This was due to the fact that "During operation, it turned out that the mass of the tank exceeded the carrying capacity of most bridges and transport platforms. It was this reason that actually buried the idea of ​​building vehicles weighing more than 50 tons."

      And the T-55 is an excellent machine of its time, successfully fulfilling its tasks.
  6. Crang
    Crang April 28 2014 18: 55
    IS-4 is a good tank. Maybe it was worth releasing them until the start of production of the steep T-10.