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IS-3 Defender — Tier VIII Soviet heavy tank

IS-3 Defender

VIII

Parameters

Compare tank's parameters with others from:
1700
HP
40 / 42
276.7m
View range
18 / 42
Firepower
Shell
1911
DPM
23 / 42
221
Penetration
19 / 42
400
Damage
6 / 42
165
Devices/crew damage
2 / 42
1200
Burst damage
1 / 8
1400
Velocity
1 / 42
12.67%
Penetration loss over distance
30 / 42
Explosion radius
— / —
1625
DPM
23 / 42
270
Penetration
8 / 42
340
Damage
6 / 42
165
Devices/crew damage
2 / 42
1020
Burst damage
1 / 8
820
Velocity
34 / 42
%
Penetration loss over distance
— / —
Explosion radius
— / —
2389
DPM
26 / 42
61
Penetration
7 / 42
500
Damage
8 / 42
165
Devices/crew damage
4 / 42
1500
Burst damage
1 / 8
790
Velocity
37 / 42
%
Penetration loss over distance
— / —
2.49
Explosion radius
4 / 42
DPM
— / —
Penetration
— / —
Damage
— / —
Devices/crew damage
— / —
Burst damage
— / —
Velocity
— / —
%
Penetration loss over distance
— / —
Explosion radius
— / —
122.0
Caliber
4 / 42
4.78
Rate of fire
25 / 42
Reload time
— / —
22.67
Magazine reload time
7 / 8
Time to load next shell
— / —
3×1
Magazine size
1 / 8
7.50
Time before next shell is ready
8 / 8
Gun handling
3.01
Base aim time
42 / 42
0.381
Dispersion
30 / 42
Dispersion factors
0.240
When moving
32 / 42
0.240
When rotating
32 / 42
0.140
When rotating turret
16 / 42
4.000
After shot
11 / 42
Gun angles
7°
Depression
24 / 42
18°
Elevation
18 / 42
180°/180°
Aiming arc (left / right)
1 / 42
24.82
Turret traverse speed
25 / 42
Mobility
49.00
Weight
35 / 42
Speed
40
Forward
5 / 42
15
Backward
14 / 42
Effective Power / Weight ratio
13.92
On hard terrain
12 / 42
11.60
On medium terrain
8 / 42
6.63
On soft terrain
30 / 42
Traverse speed
32.26
On hard terrain
23 / 42
26.89
On medium terrain
15 / 42
15.36
On soft terrain
35 / 42
6.85m×3.29m×1.86m
Size
9 / 42
Concealment
14.00%
While still
3 / 42
8.00%
While moving
4 / 42
2.66%
Upon firing while still
6 / 42
1.52%
Upon firing while moving
5 / 42
Spotting distance by enemy with view range of 290m
256.4m
While still
270.8m
While moving
283.6m
Upon firing while still
286.4m
Upon firing while moving

Armor profile

Click or tap on the image to see 3D model
Primary armor
  • 240–300
  • 180–240
  • 120–180
  • 60–120
  • 0–60
Spaced armor
  • 288–360
  • 216–288
  • 144–216
  • 72–144
  • 0–72
Weak
Strong
Chances of getting penetrated from 100m distance by average tank of given type:
  • — less than 30%
  • — between 30% and 70%
  • — more than 70%

Armor performance

Based on tank position, enemy tank type and shells
In battle vs:
Head on
AP
APP
HE
HEP
AP
APP
HE
HEP
AP
APP
HE
HEP
From the side
AP
APP
HE
HEP
AP
APP
HE
HEP
AP
APP
HE
HEP
From the back
AP
APP
HE
HEP
AP
APP
HE
HEP
AP
APP
HE
HEP
Historical Reference

In 1956–1957, the Military Armored Forces Academy developed a speculative design for a new loading system on the IS-3 and T-10 heavy tanks. The IS-3 variant featured a double-row ammo rack with an automatic loading system. The crew was reduced to three members: commander, gunner, and driver. The turret was redesigned in order to accommodate the loading mechanism. The vehicle existed only in blueprints.