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ST-I stats at a glance
The ST-I has 1600 hit points , 150mm of frontal hull armor , and a top speed of 40 km/h. Its strongest gun configuration deals 440 damage per shot with 258mm of armor penetration , giving it a theoretical maximum DPM of 2077. The vehicle can equip 3 different gun configurations, allowing for varied playstyles.
Hull & survivability
| Hit points (HP) | 1600 |
|---|---|
| Weight | 30.0 t |
| Hull armor (F / S / R) | 150 / 140 / 100 mm |
The front-to-side armor ratio is 1.1:1. Side armor is relatively comparable to the front, meaning the ST-I can absorb some side hits in close-quarters fighting.
Mobility
| Top forward speed | 40 km/h |
|---|---|
| Top reverse speed | 13 km/h |
Forward-to-reverse speed ratio is 3.1:1. Reverse speed is limited, so pre-aim and exposure timing matter more on this vehicle.
Camouflage
| Camo (stationary) | 11.7% |
|---|---|
| Camo (moving) | 5.9% |
Available guns (3)
| Gun | Tier | Damage | Pen | Reload | RoF |
|---|---|---|---|---|---|
| 122 mm M62-T2 (ST-I) | 9 | 440 | 258mm | 12.7s | 4.72 |
| 122 mm BL-9 | 8 | 390 | 239mm | 11.7s | 5.13 |
| 122 mm BL-9 | 8 | 390 | 239mm | 11.4s | 5.26 |
With the top-tier gun, the ST-I can theoretically output up to 2077 damage per minute at sustained fire (shot damage × rounds per minute). Lower-tier guns generally trade DPM for faster reload or better handling — see the full gun table above.
How ST-I compares to its peers
There are 69 tier 9 heavy tanks in WoT, including the ST-I. Its 1600 HP places it in the top 19% for hit points among same-tier heavy tanks (peer average: 1482). Frontal hull armor of 150mm ranks in the top 47% for the class (peer average: 153mm). Top forward speed of 40 km/h is faster than 54% of peer vehicles in this tier and class. The strongest gun deals 440 damage per shot, higher than 51% of comparable vehicles. Best penetration of 258mm puts it in the top 25% for armor-piercing capability in its class.
Direct comparisons
- ST-I vs AE Phase I — tier 9 heavy tank from USA
- ST-I vs Concept 1B — tier 9 heavy tank from USA
- ST-I vs M-VI-Y — tier 9 heavy tank from USA
- See full tier 9 heavy tank tier list — all 69 vehicles ranked
Related tier 9 heavy tanks
- 50TP Tyszkiewicza — Poland
- 63TP Rycerski — Poland, premium
- AE Phase I — USA, premium
- Ambassador — Sweden, premium
- AMX 50 120 — France
- AMX M4 mle. 51 FL — France, premium
- AMX M4 mle. 51 — France
- Buryan — USSR, premium
- All USSR tanks · Tier 9 premium tanks
Understand the stats
Want a deeper grasp of what these numbers actually mean in battle? Read the glossary:
- What is DPM — the most important offensive metric
- Alpha damage — single-shot damage and what it means for playstyle
- Penetration — and how it interacts with armor angling
- Hull-down position — the king of defensive plays
- View range — how spotting actually works
About this vehicle
The project was developed at Factory No. 92 in 1945. The design featured the Object 701 (IS-4) hull, but different transmission and suspension. The tank turret was developed from scratch. Existed only in blueprints.
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Frequently asked
What tier is the ST-I in WoT?
The ST-I is a tier 9 heavy tank from USSR.
How much damage does the ST-I do?
The top gun on the ST-I deals 440 damage per shot with 258mm of standard armor penetration.
Is the ST-I a premium tank?
No — the ST-I is a researchable tech-tree vehicle, not a premium tank.
What's the top speed of the ST-I?
40 km/h forward, 13 km/h reverse.
How much armor does the ST-I have?
Hull armor: 150mm front, 140mm side, 100mm rear.