IS-4

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IS-4

Icon
USSR Heavy Tank Tier X
Battle Tiers
123456789101112
Totals
Cost 6,100,000  Credits
Hit Points 2,5002,500 HP
Weight Limit 60/66.360.831/66.3 t
Crew
Commander (Radio Operator)
Gunner
Driver
Loader
Mobility
Engine Power 750750 hp
Speed Limit 43/14 km/h
Traverse 2626 deg/s
Power/Wt Ratio 12.512.33 hp/t
Pivot NoNo
Armor
Hull Armor 140/160/100 mm
Turret Armor250/200/170250/200/170 mm
Armament
Damage 292.5-487.5330-550 HP
Penetration 131-219201-335 mm
Rate of Fire
5.45100% crew: 5.69 rpm
+ Vents: 5.82 rpm
+ BiA : 5.95 rpm
+ Food: 6.2 rpm
5100% crew: 5.21 rpm
+ Vents: 5.33 rpm
+ BiA : 5.45 rpm
+ Food: 5.69 rpm
r/m
Accuracy
0.46100% crew: 0.44 m
+ Vents: 0.43 m
+ BiA : 0.42 m
+ Food: 0.4 m
0.38100% crew: 0.36 m
+ Vents: 0.36 m
+ BiA : 0.35 m
+ Food: 0.33 m
m
Aim time
2.9100% crew: 2.78 s
+ Vents: 2.72 s
+ BiA : 2.66 s
+ Food: 2.55 s
2.9100% crew: 2.78 s
+ Vents: 2.72 s
+ BiA : 2.66 s
+ Food: 2.55 s
s
Turret Traverse
22100% crew: 22.94 deg/s
+ Vents: 23.46 deg/s
+ BiA : 23.98 deg/s
+ Food: 25.02 deg/s
22100% crew: 22.94 deg/s
+ Vents: 23.46 deg/s
+ BiA : 23.98 deg/s
+ Food: 25.02 deg/s
deg/s
Gun Arc 360°
Elevation Arc -6°/+16°-6°/+16°
Ammo Capacity 3030 rounds
General
Chance of Fire 1515 %
View Range
400100% crew: 400 m
+ Vents: 408.57 m
+ BiA : 417.14 m
+ Food: 434.29 m
400100% crew: 400 m
+ Vents: 408.57 m
+ BiA : 417.14 m
+ Food: 434.29 m
m
Signal Range
720100% crew: 750.86 m
+ Vents: 767.83 m
+ BiA : 784.8 m
+ Food: 818.74 m
720100% crew: 750.86 m
+ Vents: 767.83 m
+ BiA : 784.8 m
+ Food: 818.74 m
m
Parent Contour-USSR-ST I.png
Child none
Research
RT-USSR-IS-4.jpg
Values are Stock - click for Top
USSR-IS-4.png

The IS-4 is a Soviet tier 10 heavy tank.

The development of the vehicle was started in April 1944, with several prototypes manufactured by the end of World War II. The IS-4 was mass-produced from 1947 through 1949, with a total of 219 vehicles built.

The IS-4 is quite a versatile tank, with a good gun, and thick sloped armor. These are opposed by its somewhat low speed and agility. When armed with the 122mm M62-T2 gun, it becomes a fearsome opponent, capable of belting out generous amounts of damage. It trades frontal armor from its predecessor, the ST-I, in exchange for better side armor and higher mobility. It sports better penetration and rate of fire, it still is far from being as nimble as its counterpart, the IS-7, and feels very sluggish and slow in comparison. While its frontal armor is thinner than other tier X tanks, it compensates by having a great slope on the frontal armor plating, meaning that you will bounce enemy shots effectively. Unfortunately, the lower frontplate is very soft and a rather big target to hit, effectively negating the good slope of the upper front plate. Therefore, it is best to either hull-down or position yourself at an angle to maximize your sloped armor. Take into consideration that you are a close-range brawler, not a sniper, as your guns have poor or mediocre accuracy at best, and if you miss a shot it can be painful. You do not have the speed and manuverability to get yourself into position quickly and relocate if needed. However, you can utilize cover sufficiently effective - peek out, fire a shot at the enemy, then dive back into safety. The good side armor also makes it very suitable for side scraping. Generally, it is more well-rounded over the IS-7, but it doesn't have any extremely strong points.

The IS-4 marks the end of one of the Soviet heavy tank lines.


















Modules

Turret
TierNameArmorTraverse SpeedTraverse ArcView RangeXP CostPriceWeight
10X IS-4M 0250 250/200/170 mm
22100% crew: 22.94 deg/s
+ Vents: 23.46 deg/s
+ BiA : 23.98 deg/s
+ Food: 25.02 deg/s
22100% crew: 22.94 deg/s
+ Vents: 23.46 deg/s
+ BiA : 23.98 deg/s
+ Food: 25.02 deg/s
d/s
360°
400100% crew: 400 m
+ Vents: 408.57 m
+ BiA : 417.14 m
+ Food: 434.29 m
400100% crew: 400 m
+ Vents: 408.57 m
+ BiA : 417.14 m
+ Food: 434.29 m
m
0------ 0--- 14,200 14,200 kg
Guns compatible with this Turret:
Gun
TierNameAmmoDamagePenetrationShell PriceRate of FireAccuracyAim TimeElevationXP CostPriceWeight
08VIII 122 mm D-25T 30 390/390/465 HP 175/217/61 mm 1,025 Credits/12 Gold/608 Credits
5.45100% crew: 5.69 rpm
+ Vents: 5.82 rpm
+ BiA : 5.95 rpm
+ Food: 6.2 rpm
r/m
0.46100% crew: 0.44 m
+ Vents: 0.43 m
+ BiA : 0.42 m
+ Food: 0.4 m
m
2.9100% crew: 2.78 s
+ Vents: 2.72 s
+ BiA : 2.66 s
+ Food: 2.55 s
s
-6°/+16° --- 125,140125,140 Credits 2,590 2,590 kg
10X 122 mm M62-T2 30 440/440/530 HP 258/340/68 mm 1,065 Credits/13 Gold/630 Credits
5100% crew: 5.21 rpm
+ Vents: 5.33 rpm
+ BiA : 5.45 rpm
+ Food: 5.69 rpm
r/m
0.38100% crew: 0.36 m
+ Vents: 0.36 m
+ BiA : 0.35 m
+ Food: 0.33 m
m
2.9100% crew: 2.78 s
+ Vents: 2.72 s
+ BiA : 2.66 s
+ Food: 2.55 s
s
-6°/+16° 59,300 335,000335,000 Credits 3,397 3,397 kg

Engine
TierNamePowerFire ChanceTypeXP CostPriceWeight
10X V-12 0750 750 hp 015 15 % Diesel --- 0--- 1,024 1,024 kg

Suspension
TierNameLoad LimitTraverse SpeedXP CostPriceWeight
10X IS-4 66.366.3 t 02626 d/s ------ 0--- 11,000 11,000 kg

Radio
TierNameRangeXP CostPriceWeight
10X 10RK-26
720100% crew: 750.86 m
+ Vents: 767.83 m
+ BiA : 784.8 m
+ Food: 818.74 m
720100% crew: 750.86 m
+ Vents: 767.83 m
+ BiA : 784.8 m
+ Food: 818.74 m
m
0--- --- 0--- 0160 160 kg

Historical Info

Originally developed in competition with the IS-3, the IS-4 was similarly an extensive redesign of the IS-2. The hull was lengthened, with an extra set of road wheels added and an improved engine. Both the hull and turret were uparmoured. Several alternative armaments were explored in paper studies, but ultimately the IS-2's original 122mm gun was retained. An effort was also made to incorporate technical data derived from study of the German wartime Panzer V Panther tank, which influenced the layout of the IS-4's engine cooling system. The tank was approved for mass production in 1948, but due to disappointing speed and mobility, only 200 were manufactured. Most of these were transferred to the Russian Far East in 1950, in preparation for the planned Soviet intervention in the Korean War. When this operation was aborted, the tanks nevertheless remained stationed in the region until their decommissioning in the 1960's.


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