ST-I

Tier 9 · ussr · heavy

About

The design was developed at Factory No. 92 by engineers V.A. Ganin and A.S. Chasovnikov. The new tank was intended as an upgraded version of the unsatisfactory heavy tanks of that time. Existed only in blueprints.

Survivability

Hit points

1,800

View range

360 m

Signal range

440 m

Engine fire chance

15%

Armor (mm)

Front

Sides

Rear

Hull

150

140

100

Turret

220

170

160

Gun · 122 mm BL-9

Caliber

122 mm

Rate of fire

4.76 rpm

Reload

12.6 s

Aim time

2.8 s

Dispersion @ 100 m

0.4 m

Gun arc

6° / 16°

Traverse

26°/s

Ammo

Mobility

Top speed

40 km/h

Reverse

13 km/h

Engine

650 hp

Power/weight

11.3 hp/t

Hull traverse

24°/s

Turret traverse

22°/s

Shells

ARMOR_PIERCING

390 dmg (293–488)

217 mm pen (163–271)

ARMOR_PIERCING_CR

390 dmg (293–488)

270 mm pen (203–338)

HIGH_EXPLOSIVE

530 dmg (398–663)

61 mm pen (46–76)

Marks of Excellencesample size 103 · updated 5/23/2026

1 mark

1,168

avg damage

2 marks

1,891

avg damage

3 marks

avg damage