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Қазақ тіліObject 257
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3 560 000 
Obj. 257
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.
IS-3 (257)
10RK
12RT
R-113
V-2-54IS
2x V-16 (1000)
Object 257
Object 257 Version 2
Shell Types:
AP
APCR
HE
APCR
HEAT
HE
Equipment:
Consumables:
Firepower: | |||||||||
| Ammunition | 40 (rounds) | ||||||||
| Caliber | 122 (mm) | ||||||||
| Damage | 390 / 390 / 530 (HP) | ||||||||
| Penetration | 225 / 265 / 68 (mm) | ||||||||
| Rate of Fire | 4.51 (rounds/min) | ||||||||
| Average Damage per Minute | 1759 (HP) | ||||||||
| Shells in the Magazine | |||||||||
| Time for Loading Between Shots | (s) | ||||||||
| Time for Complete Loading | (s) | ||||||||
| Gun Loading | 13.30 (s) | ||||||||
| Aiming Time | 3.00 (s) | ||||||||
| Dispersion at 100 m | 0.40 (m) | ||||||||
Mobility: | |||||||||
| Weight/Load Limit | 51.32 / 55.00 (t) | ||||||||
| Engine Power | 700 (h.p.) | ||||||||
| Specific Power | 13.64 (h.p./t) | ||||||||
| Top Speed | 50 (km/h) | ||||||||
| Reverse Speed | 15 (km/h) | ||||||||
| Traverse Speed | 35 (deg/s) | ||||||||
| Turret Traverse Speed | 26 (deg/s) | ||||||||
Survivability: | |||||||||
| Hit Points | 1800 (HP) | ||||||||
| Hull Armor | 130 / 130 / 70 (mm) | ||||||||
| Turret Armor | 249 / 110 / 70 (mm) | ||||||||
Spotting: | |||||||||
| View Range | 380 (m) | ||||||||
| Signal Range | 440 (m) | ||||||||
Crew: | |||||||||
| |||||||||
