Object 257
Obj. 257
Tank ID 19713
Vehicle description
Wargaming Tankopedia
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.
Description from the Wargaming Tankopedia · Language selected automatically
Technical profile
Standard configuration
Hit points
1,900
Weight
51.3 t
Forward speed
50 km/h
Reverse speed
15 km/h
View range
380 m
Signal range
730 m
Armour
| Front | Sides | Rear | |
|---|---|---|---|
| Hull | 130 | 130 | 70 |
| Turret | 249 | 110 | 70 |
Engine: V-2-54 (257) · 750 hp
Radio: R-113
Armament
Standard gun and ammunition
122 mm BL-9 (257)
Shell types
Penetration 169 / 225 / 281 mm
Penetration 199 / 265 / 331 mm
Penetration 51 / 68 / 85 mm
Marks of Excellence
Damage thresholds
Combined Damage (Damage + Assist + Tracking)
Approximation based on WN8 expected values — not an official Wargaming figure.
WN8 Expected Values
XVM reference
XVM Expected Values for WN8 calculation (per battle)
Community stats
Measured, not estimated
Average across every profile stored on WG-Watch — real battles instead of expected values.
Win rate
52.14 %
Avg. WN8
1,699
Battles
26,659
As of Aug 31, 2026
Rank 116 of 129 at Tier IX
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 | iyouxin eu | 6,698 | 69 | 66.67 % |
| 2 | MentalBlessed eu | 6,314 | 176 | 68.18 % |
| 3 | Emperor_Jogi eu | 5,348 | 60 | 70.00 % |
| 4 | Davai_Davai_Management eu | 5,259 | 54 | 61.11 % |
| 5 | Dakillzor eu | 5,043 | 97 | 65.98 % |
| 6 | skill4ltu eu | 4,847 | 117 | 62.39 % |
| 7 | gyonifiu eu | 4,722 | 82 | 78.05 % |
| 8 | Panzerfighter_ eu | 4,608 | 64 | 67.19 % |
| 9 | Yzne eu | 4,499 | 123 | 62.60 % |
| 10 | Keyhand eu | 4,223 | 108 | 79.63 % |
