KV-3

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KV-3

Icon
USSR Heavy Tank Tier VII
Battle Tiers
123456789101112
Totals
Cost 1,390,000  Credits
Hit Points 1,3001,400 HP
Weight Limit 64.8/68.368.195/71.8 t
Crew
Commander
Gunner
Radio Operator
Driver
Loader
Loader
Mobility
Engine Power 600750 hp
Speed Limit 32/10 km/h
Traverse 1618 deg/s
Power/Wt Ratio 9.2611 hp/t
Pivot NoNo
Armor
Hull Armor 120/90/80 mm
Turret Armor100/100/100130/115/115 mm
Armament
Damage 120-200292.5-487.5 HP
Penetration 90-150131-219 mm
Rate of Fire
11.76100% crew: 12.27 rpm
+ Vents: 12.55 rpm
+ BiA : 12.82 rpm
+ Food: 13.38 rpm
4.88100% crew: 5.09 rpm
+ Vents: 5.2 rpm
+ BiA : 5.32 rpm
+ Food: 5.55 rpm
r/m
Accuracy
0.42100% crew: 0.4 m
+ Vents: 0.39 m
+ BiA : 0.39 m
+ Food: 0.37 m
0.46100% crew: 0.44 m
+ Vents: 0.43 m
+ BiA : 0.42 m
+ Food: 0.4 m
m
Aim time
3.4100% crew: 3.26 s
+ Vents: 3.19 s
+ BiA : 3.12 s
+ Food: 2.99 s
3.4100% crew: 3.26 s
+ Vents: 3.19 s
+ BiA : 3.12 s
+ Food: 2.99 s
s
Turret Traverse
24100% crew: 25.03 deg/s
+ Vents: 25.59 deg/s
+ BiA : 26.16 deg/s
+ Food: 27.29 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 -7°/+24°-7°/+24°
Ammo Capacity 9138 rounds
General
Chance of Fire 1515 %
View Range
330100% crew: 330 m
+ Vents: 337.07 m
+ BiA : 344.14 m
+ Food: 358.29 m
340100% crew: 340 m
+ Vents: 347.29 m
+ BiA : 354.57 m
+ Food: 369.14 m
m
Signal Range
360100% crew: 375.43 m
+ Vents: 383.91 m
+ BiA : 392.4 m
+ Food: 409.37 m
730100% crew: 761.29 m
+ Vents: 778.49 m
+ BiA : 795.7 m
+ Food: 830.11 m
m
Parent Contour-USSR-T150.png
Child
Contour-USSR-КV4.png53,000 XP
Research
RT-USSR-KV-3.jpg
Values are Stock - click for Top
USSR-KV-3.png

The KV-3 is a Soviet tier 7 heavy tank.

Initially designed as a replacement for the KV-1. The hull and suspension had been developed at the outbreak of World War II, but the KV-3 was never mass-produced.

The KV-3 is defined by its lengthened and more heavily armored KV chassis, and a much rounder turret design. It can use a large variety of guns, but it's best known for the 122mm D-25T cannon, a weapon it shares with the IS. It sports an impressive 120mm of frontal hull armor, its turret is relatively well armored too, and the conical design makes bouncing frequent. When upgraded, it can mount the V-2SN engine, which gives a huge boost of horsepower. It is however much slower than the IS, and like the IS it lacks penetration compared to the German, French and US heavy tanks of its tier.


The KV-3 leads to the KV-4.


















Modules

Turret
TierNameArmorTraverse SpeedTraverse ArcView RangeXP CostPriceWeight
06VI T-220 0100 100/100/100 mm
24100% crew: 25.03 deg/s
+ Vents: 25.59 deg/s
+ BiA : 26.16 deg/s
+ Food: 27.29 deg/s
24100% crew: 25.03 deg/s
+ Vents: 25.59 deg/s
+ BiA : 26.16 deg/s
+ Food: 27.29 deg/s
d/s
360°
330100% crew: 330 m
+ Vents: 337.07 m
+ BiA : 344.14 m
+ Food: 358.29 m
330100% crew: 330 m
+ Vents: 337.07 m
+ BiA : 344.14 m
+ Food: 358.29 m
m
0------ 10,63010,630 Credits 10,000 10,000 kg
Guns compatible with this Turret:
Gun
TierNameAmmoDamagePenetrationShell PriceRate of FireAccuracyAim TimeElevationXP CostPriceWeight
06VI 85 mm F-30 91 160/160/280 HP 120/161/43 mm 109 Credits/7 Gold/98 Credits
11.76100% crew: 12.27 rpm
+ Vents: 12.55 rpm
+ BiA : 12.82 rpm
+ Food: 13.38 rpm
r/m
0.42100% crew: 0.4 m
+ Vents: 0.39 m
+ BiA : 0.39 m
+ Food: 0.37 m
m
3.4100% crew: 3.26 s
+ Vents: 3.19 s
+ BiA : 3.12 s
+ Food: 2.99 s
s
-7°/+20° --- 48,00048,000 Credits 1,550 1,550 kg
06VI 85 mm S-31 91 160/160/280 HP 119/159/43 mm 109 Credits/7 Gold/98 Credits
11.76100% crew: 12.27 rpm
+ Vents: 12.55 rpm
+ BiA : 12.82 rpm
+ Food: 13.38 rpm
r/m
0.42100% crew: 0.4 m
+ Vents: 0.39 m
+ BiA : 0.39 m
+ Food: 0.37 m
m
3.4100% crew: 3.26 s
+ Vents: 3.19 s
+ BiA : 3.12 s
+ Food: 2.99 s
s
-7°/+20° 4,350 49,20049,200 Credits 1,500 1,500 kg
07VII 107 mm ZiS-6 61 300/300/360 HP 167/219/54 mm 270 Credits/11 Gold/280 Credits
6.19100% crew: 6.45 rpm
+ Vents: 6.6 rpm
+ BiA : 6.74 rpm
+ Food: 7.03 rpm
r/m
0.45100% crew: 0.43 m
+ Vents: 0.42 m
+ BiA : 0.41 m
+ Food: 0.4 m
m
3.4100% crew: 3.26 s
+ Vents: 3.19 s
+ BiA : 3.12 s
+ Food: 2.99 s
s
-7°/+20° 14,400 68,29068,290 Credits 2,400 2,400 kg

Turret
TierNameArmorTraverse SpeedTraverse ArcView RangeXP CostPriceWeight
07VII KV-3 0130 130/115/115 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°
340100% crew: 340 m
+ Vents: 347.29 m
+ BiA : 354.57 m
+ Food: 369.14 m
340100% crew: 340 m
+ Vents: 347.29 m
+ BiA : 354.57 m
+ Food: 369.14 m
m
7,1207,120 21,93021,930 Credits 12,300 12,300 kg
Guns compatible with this Turret:
Gun
TierNameAmmoDamagePenetrationShell PriceRate of FireAccuracyAim TimeElevationXP CostPriceWeight
06VI 85 mm F-30 79 160/160/280 HP 120/161/43 mm 109 Credits/7 Gold/98 Credits
11.76100% crew: 12.27 rpm
+ Vents: 12.55 rpm
+ BiA : 12.82 rpm
+ Food: 13.38 rpm
r/m
0.42100% crew: 0.4 m
+ Vents: 0.39 m
+ BiA : 0.39 m
+ Food: 0.37 m
m
3.4100% crew: 3.26 s
+ Vents: 3.19 s
+ BiA : 3.12 s
+ Food: 2.99 s
s
-7°/+24° --- 48,00048,000 Credits 1,550 1,550 kg
06VI 85 mm S-31 79 160/160/280 HP 119/159/43 mm 109 Credits/7 Gold/98 Credits
11.76100% crew: 12.27 rpm
+ Vents: 12.55 rpm
+ BiA : 12.82 rpm
+ Food: 13.38 rpm
r/m
0.42100% crew: 0.4 m
+ Vents: 0.39 m
+ BiA : 0.39 m
+ Food: 0.37 m
m
3.4100% crew: 3.26 s
+ Vents: 3.19 s
+ BiA : 3.12 s
+ Food: 2.99 s
s
-7°/+24° 4,350 49,20049,200 Credits 1,500 1,500 kg
07VII 107 mm ZiS-6 55 300/300/360 HP 167/219/54 mm 270 Credits/11 Gold/280 Credits
6.19100% crew: 6.45 rpm
+ Vents: 6.6 rpm
+ BiA : 6.74 rpm
+ Food: 7.03 rpm
r/m
0.45100% crew: 0.43 m
+ Vents: 0.42 m
+ BiA : 0.41 m
+ Food: 0.4 m
m
3.4100% crew: 3.26 s
+ Vents: 3.19 s
+ BiA : 3.12 s
+ Food: 2.99 s
s
-7°/+24° 14,400 68,29068,290 Credits 2,400 2,400 kg
07VII 100 mm D10T 47 250/250/330 HP 175/235/50 mm 252 Credits/10 Gold/252 Credits
6.45100% crew: ? rpm
+ Vents: ? rpm
+ BiA : ? rpm
+ Food: ? rpm
r/m
0.42100% crew: 0.4 m
+ Vents: 0.39 m
+ BiA : 0.39 m
+ Food: 0.37 m
m
2.9100% crew: 2.78 s
+ Vents: 2.72 s
+ BiA : 2.66 s
+ Food: 2.55 s
s
-7°/+24° 16,500 78,18078,180 Credits 2,257 2,257 kg
07VII 122 mm D-2-5T 38 390/390/465 HP 175/217/61 mm 1,025 Credits/12 Gold/608 Credits
4.08100% crew: 4.26 rpm
+ Vents: 4.35 rpm
+ BiA : 4.45 rpm
+ Food: 4.64 rpm
r/m
0.46100% crew: 0.44 m
+ Vents: 0.43 m
+ BiA : 0.42 m
+ Food: 0.4 m
m
3.4100% crew: 3.26 s
+ Vents: 3.19 s
+ BiA : 3.12 s
+ Food: 2.99 s
s
-7°/+24° 17,000 84,98084,980 Credits 2,600 2,600 kg
08VIII 122 mm D-25T 38 390/390/465 HP 175/217/61 mm 1,025 Credits/12 Gold/608 Credits
4.88100% crew: 5.09 rpm
+ Vents: 5.2 rpm
+ BiA : 5.32 rpm
+ Food: 5.55 rpm
r/m
0.46100% crew: 0.44 m
+ Vents: 0.43 m
+ BiA : 0.42 m
+ Food: 0.4 m
m
3.4100% crew: 3.26 s
+ Vents: 3.19 s
+ BiA : 3.12 s
+ Food: 2.99 s
s
-7°/+24° 19,000 125,140125,140 Credits 2,590 2,590 kg

Engine
TierNamePowerFire ChanceTypeXP CostPriceWeight
06VI V-5 0600 600 hp 015 15 % Diesel --- 27,86027,860 Credits 0700 700 kg
07VII V-2IS 0600 600 hp 015 15 % Diesel 11,000 36,00036,000 Credits 0750 750 kg
08VIII V-2SN 0750 750 hp 015 15 % Diesel 12,000 34,00034,000 Credits 0750 750 kg

Suspension
TierNameLoad LimitTraverse SpeedXP CostPriceWeight
06VI KV-3 68.2568.25 t 01616 d/s ------ 10,72010,720 Credits 14,200 14,200 kg
07VII KV-3 bis 71.871.8 t 01818 d/s 6,3206,320 18,20018,200 Credits 14,200 14,200 kg

Radio
TierNameRangeXP CostPriceWeight
05V 10R
360100% crew: 375.43 m
+ Vents: 383.91 m
+ BiA : 392.4 m
+ Food: 409.37 m
360100% crew: 375.43 m
+ Vents: 383.91 m
+ BiA : 392.4 m
+ Food: 409.37 m
m
0--- --- 3,6603,660 Credits 0100 100 kg
07VII 10RK
440100% crew: 458.86 m
+ Vents: 469.23 m
+ BiA : 479.6 m
+ Food: 500.34 m
440100% crew: 458.86 m
+ Vents: 469.23 m
+ BiA : 479.6 m
+ Food: 500.34 m
m
3,100 3,100 18,60018,600 Credits 0100 100 kg
09IX 12RT
625100% crew: 651.79 m
+ Vents: 666.52 m
+ BiA : 681.25 m
+ Food: 710.71 m
625100% crew: 651.79 m
+ Vents: 666.52 m
+ BiA : 681.25 m
+ Food: 710.71 m
m
5,600 5,600 33,60033,600 Credits 0110 110 kg
10X R113
730100% crew: 761.29 m
+ Vents: 778.49 m
+ BiA : 795.7 m
+ Food: 830.11 m
730100% crew: 761.29 m
+ Vents: 778.49 m
+ BiA : 795.7 m
+ Food: 830.11 m
m
8,700 8,700 52,20052,200 Credits 0080 80 kg

Historical Info

Initially designed as a replacement for the KV-1, the hull and suspension were developed by the beginning of WWII. The KV-3 was not produced in series.

Development and preliminary design

In 1940, the KV-1 and KV-2 tanks were the heavy tanks of the USSR army. Even before the war started, the Soviet military recognized the need for more armor. The KV was only just in mass production, but an order was made for an improved version of it on June 17th, 1940. The tank factory in Kirov was to make 4 prototypes by the end of the year: 2 versions with 90 mm and 2 versions with 100 mm armor. Of the two types, one should be armed with an 85 mm gun, the other with a 76 mm gun.

The factory only managed to complete two of this prototypes: the 90 mm armored design with a 76 mm gun, basically an up-armored KV-1 tank, and a 100 mm armored design with the 85 mm gun. They were respectively called T-150 (or Object 150) and T-220 (or Object 220). Apart from extra armor, the T-150 only differed on some details from the KV-1 (an improved cupola and a new 700 hp engine are the most important changes). The inside of the tank didn't change, as the extra armor was mounted externally. During testing, the T-150 suffered from overheating in higher gears, even though outside temperatures were well below zero degrees centigrade.

The T-220 was a more radical innovation. The hull was lengthened, a wheel was added and a new gun, the 85 mm F-30 main gun, was mounted. The gun was already successfully tested on the T-28 that fall. Testing of the T-220 started at the end of January 1941, but after one day the 700 hp V-5 engine could not cope with the weight of 62 tons and failed.

Despite these problems, orders were received to mass-produce the T-150, under the name KV-3, in March, as the current tanks of the Soviet army were becoming more and more obsolete. However, the factory and the designers chose to concentrate on developing the T-220 instead, now under the name KV-220. The tank was tested extensively and received a new 850 hp diesel engine with supercharger. However, not only the engine was suffering from the weight of 70 tons. Suspension and torsion bars bent and twisted, and the transmission had problems as well. Still, the tank was able to complete nearly 2,000 km of testing before the start of Operation Barbarossa.

The factory started preparation for mass production again, but was stopped by the Soviet military. Intelligence showed that the Germans were also designing a heavy tank, so the Soviet design would become even more important. If it failed, the Soviet army would not have an adequate counter to the German threat. This meant the design of the KV-3 was again subject to modification of both hull and turret, and a new gun, the 107 mm ZiS-6, was to be mounted on the tank.

Moreover, new, heavier tanks were demanded, most notably the KV-4 heavy tank. With a design weight of 90 tons, this tank was too heavy to go in production, especially taking into account the problems with the transmission that were plaguing the much lighter KV tank. A KV-5 tank, with a hull height of 9 meters, was also ordered, but never got beyond the drawing board. Possibly the most feasible design proposal was the KV-9 heavy assault tank. With a weight of 48 tons, a 122 mm howitzer, and front armor of 135 mm, this was a much more realistic design. Two prototypes of the tank were completed, but the tank never went into mass production. Finally, a turretless prototype, the KV-7, was sent to Moscow for review. The tank mounted multiple guns, and was rejected by Stalin for this reason.

The fate of the prototypes

With the war underway, the KV factories that were experimenting with prototypes focused on mass production of the KV, the only Soviet tank that was truly feared by Germany at the time. The unfinished prototypes were ripped of their experimental turrets and guns and were sent to the front with KV-1 turrets. The T-220 (KV-3) model served under the 124th tank battalion and was destroyed near the Ust-Tosno railway bridge in December 1941. The T-150 was sent to the 123th tank battalion, but its fate is unknown.

Further development of the KV series was halted, but the experience of the testing was used to design the successful IS tank.

Conclusion

The KV was a heavy, slow-moving tank, but the Soviet army wanted something even stronger. That meant all parts had to be more durable and able to cope with more weight. During testing, it showed that the designers did not succeed in developing a reliable, versatile heavy tank based on the KV-tank. Ultimately the projects were stopped and the focus of the Soviet tank designers shifted to developing a tank with reasonable weight, good mobility, and sufficient armor. The IS tank was the logical result of their quest.


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