Object 257

Object 257 stats at a glance

The Object 257 has 1600 hit points , 130mm of frontal hull armor , and a top speed of 50 km/h. Its strongest gun configuration deals 440 damage per shot with 248mm of armor penetration , giving it a theoretical maximum DPM of 2033. The vehicle can equip 4 different gun configurations, allowing for varied playstyles.

Hull & survivability

The front-to-side armor ratio is 1.0:1. Side armor is relatively comparable to the front, meaning the Obj. 257 can absorb some side hits in close-quarters fighting.

Mobility

Forward-to-reverse speed ratio is 3.3:1. Reverse speed is limited, so pre-aim and exposure timing matter more on this vehicle.

Camouflage

Available guns (4)

With the top-tier gun, the Obj. 257 can theoretically output up to 2033 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 Obj. 257 compares to its peers

There are 69 tier 9 heavy tanks in WoT, including the Obj. 257. Its 1600 HP places it in the top 19% for hit points among same-tier heavy tanks (peer average: 1482). Frontal hull armor of 130mm ranks in the top 72% for the class (peer average: 154mm). Top forward speed of 50 km/h is faster than 87% 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 248mm puts it in the top 60% for armor-piercing capability in its class.

Direct comparisons

• Obj. 257 vs AE Phase I — tier 9 heavy tank from USA
• Obj. 257 vs Concept 1B — tier 9 heavy tank from USA
• Obj. 257 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

A project of the heavy tank designated IS-7 that was developed in 1945. The vehicle was supposed to feature an electromechanical transmission. Development was discontinued at the documentation design stage. Existed only in blueprints.

Frequently asked