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IS-3 Defender — Tier VIII Soviet heavy tank

IS-3 Defender

VIII
Competes with

Parameters

Compare tank's parameters with others from:
1700
HP
41 / 45
276.7m
View range
18 / 45
Firepower
Shell
1911
DPM
24 / 45
221
Penetration
19 / 45
400
Damage
8 / 45
165
Devices/crew damage
4 / 45
1200
Burst damage
2 / 9
1400
Velocity
1 / 45
12.67%
Penetration loss over distance
33 / 45
—
Explosion radius
— / —
1625
DPM
24 / 44
270
Penetration
8 / 44
340
Damage
7 / 44
165
Devices/crew damage
3 / 44
1020
Burst damage
2 / 9
820
Velocity
36 / 44
—%
Penetration loss over distance
— / —
—
Explosion radius
— / —
2389
DPM
27 / 44
61
Penetration
8 / 44
500
Damage
9 / 44
165
Devices/crew damage
5 / 44
1500
Burst damage
2 / 9
790
Velocity
39 / 44
—%
Penetration loss over distance
— / —
2.49
Explosion radius
5 / 44
DPM
— / —
Penetration
— / —
Damage
— / —
Devices/crew damage
— / —
Burst damage
— / —
Velocity
— / —
%
Penetration loss over distance
— / —
Explosion radius
— / —
122.0
Caliber
6 / 45
4.78
Rate of fire
26 / 45
—
Reload time
— / —
22.67
Magazine reload time
8 / 9
/ / /
Time to load next shell
— / —
3×1
Magazine size
2 / 9
7.50
Time before next shell is ready
9 / 9
Gun handling
3.01
Base aim time
45 / 45
0.381
Dispersion
32 / 45
Dispersion factors
0.240
When moving
34 / 45
0.240
When rotating
34 / 45
0.140
When rotating turret
15 / 45
4.000
After shot
11 / 45
Gun angles
7°
Depression
27 / 45
18°
Elevation
19 / 45
180°/180°
Aiming arc (left / right)
1 / 45
24.82
Turret traverse speed
26 / 45
Mobility
49.00
Weight
36 / 45
Speed
40
Forward
5 / 45
15
Backward
15 / 45
Effective Power / Weight ratio
13.92
On hard terrain
14 / 45
11.60
On medium terrain
9 / 45
6.63
On soft terrain
33 / 45
Traverse speed
32.26
On hard terrain
25 / 45
26.89
On medium terrain
17 / 45
15.36
On soft terrain
38 / 45
6.85m×3.29m×1.86m
Size
11 / 45
Concealment
14.00%
While still
3 / 45
8.00%
While moving
4 / 45
2.66%
Upon firing while still
7 / 45
1.52%
Upon firing while moving
5 / 45
Spotting distance by enemy with view range of 302m
266.7m
While still
281.8m
While moving
295.3m
Upon firing while still
298.2m
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.