ISU-122S
Tier VII Tank Destroyer Soviet Union

ISU-122S

Tank ID 59649

Vehicle description

Wargaming Tankopedia

A heavy assault gun, built on the basis of the IS tank, was effective against German heavy tanks as well as fortifications. The prototype was built at the Chelyabinsk Kirov Plant in April 1944. The vehicle entered service in August of that year, and a total of 675 vehicles were manufactured in 1944 and 1945.

Description from the Wargaming Tankopedia · Language selected automatically

Technical profile

Standard configuration

Hit points

870

Weight

45.8 t

Forward speed

43 km/h

Reverse speed

12 km/h

View range

350 m

Signal range

730 m

Armour

Front Sides Rear
Hull 90 90 60
Turret

Engine: V-2IS · 600 hp

Radio: 10RKM

Armament

Standard gun and ammunition

122 mm D-25S mod. 1944

Calibre 122 mm
Reload time 7.4 s
Aiming time 2.9 s
Dispersion 0.41
Rate of fire 8.11 /min
Ammo capacity 32

Shell types

AP · armour-piercing Damage 293 / 390 / 488

Penetration 131 / 175 / 219 mm

APCR · composite rigid Damage 293 / 390 / 488

Penetration 163 / 217 / 271 mm

HE · high explosive Damage 398 / 530 / 663

Penetration 48 / 64 / 80 mm

Marks of Excellence

Damage thresholds

Combined Damage (Damage + Assist + Tracking)

Combined damage
1 Mark ≥ 65 %
1,703
2 Marks ≥ 85 %
2,478
3 Marks ≥ 95 %
3,200

Approximation based on WN8 expected values — not an official Wargaming figure.

WN8 Expected Values

XVM reference

XVM Expected Values for WN8 calculation (per battle)

Per battle (avg.)
Avg. damage 1,032
Avg. spotted 0.57
Avg. kills 1.11
Avg. defence 0.82
Exp. win rate 52.88 %

Community stats

Measured, not estimated

Average across every profile stored on WG-Watch — real battles instead of expected values.

Win rate

54.50 %

Avg. WN8

1,786

Battles

6,072

As of Aug 31, 2026

Rank 31 of 85 at Tier VII

Best players on this tank

By WN8

From the stored profiles, minimum 50 battles on this vehicle. Updated daily.

# Player WN8 Battles Win rate
1 mailand eu 4,921 57 63.16 %
2 Xilense eu 4,896 83 71.08 %
3 Yzne eu 4,317 124 63.71 %
4 skill4ltu eu 4,309 126 65.87 %
5 SAMCRO81 eu 2,641 238 57.56 %
6 Iceprince eu 2,429 89 65.17 %
7 LovacBL na 2,393 75 62.67 %
8 KzH_bis__DZE eu 2,335 73 63.01 %
9 Chillerandy299 eu 2,293 132 63.64 %
10 Octavius eu 2,279 166 54.82 %

Commonly compared

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