![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fstatic%2Flatest%2Fwotp_static%2Fimg%2Ftankopedia_new%2Ffrontend%2Fscss%2Ftankopedia-detail%2Fimg%2Fhangar-bg.webp&w=3840&q=75) ![Object 257](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr151_object_257_2%2Fr151_object_257_2_image.png&w=3840&q=75) XP cost142,700(~$26.49) Credits cost3,560,000(~$39.53) Total cost~$66.02 Free XPT1439,435(~$72.94) RateXP = 1 gold IX![USSR](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fstatic%2Flatest%2Fwotp_static%2Fimg%2Fcore%2Ffrontend%2Fscss%2Fcommon%2Fcomponents%2Ficons%2Fimg%2Fflags%2Fussr_small.png&w=3840&q=75 "USSR")Heavy tankBreakthrough # Object 257 World of Tanks NA statistics for the IX USSR heavy tank Object 257. [ Not rated yet, be the first](/na/tanks/obj-257/community.md) [Specifications](/na/tanks/obj-257.md)[Performances](/na/tanks/obj-257/performances.md)[Marks](/na/tanks/obj-257/marks.md)[History](/na/tanks/obj-257/history.md)[Videos](/na/tanks/obj-257/videos.md)[Community](/na/tanks/obj-257/community.md) ## Object 257 tech tree branch [ ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr11_ms-1%2Fr11_ms-1_icon.svg&w=64&q=75) IMS-1 ](/na/tanks/ms-1.md) [ ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr08_bt-2%2Fr08_bt-2_icon.svg&w=64&q=75) IIBT-2 2703.5K ](/na/tanks/bt-2.md) [ ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr174_bt-5%2Fr174_bt-5_icon.svg&w=64&q=75) IIIBT-5 1.5K37K ](/na/tanks/bt-5.md) [ ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr06_t-28%2Fr06_t-28_icon.svg&w=64&q=75) IVT-28 3.2K135K ](/na/tanks/t-28.md) [ ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr80_kv1%2Fr80_kv1_icon.svg&w=64&q=75) VKV-1 13.5K390K ](/na/tanks/kv-1.md) [ ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr13_kv-1s%2Fr13_kv-1s_icon.svg&w=64&q=75) VIKV-1S 25.7K910K ](/na/tanks/kv-1s.md) [ ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr01_is%2Fr01_is_icon.svg&w=64&q=75) VIIIS 49.5K1.4M ](/na/tanks/is.md) [ ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr19_is-3%2Fr19_is-3_icon.svg&w=64&q=75) VIIIIS-3 77K2.6M ](/na/tanks/is-3.md) ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr151_object_257_2%2Fr151_object_257_2_icon.svg&w=64&q=75) IXObj. 257 142.7K3.6M [ ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr45_is-7%2Fr45_is-7_icon.svg&w=64&q=75) XIS-7 191.5K6.1M ](/na/tanks/is-7.md) ## Object 257 characteristics ### Firepower [Damage](/glossary/alpha-damage.md) 390hp [… vs modules](/glossary/module-damage.md) 165hp [Penetration](/glossary/penetration.md) 225mm [… at 500m](/glossary/penetration.md) 204mm [DPM](/glossary/dpm.md) 2,108 [Reload](/glossary/reload.md) 11.10s [Rate of fire](/glossary/rate-of-fire.md) 5.41/min [Aim time](/glossary/aim-time.md) 3.10s [Dispersion](/glossary/dispersion.md) 0.380m [… moving](/glossary/dispersion.md) 0.200 [… hull traverse](/glossary/hull-traverse.md) 0.200 [… turret traverse](/glossary/turret-traverse.md) 0.100 [… after firing](/glossary/dispersion.md) 3.50× [… gun damaged](/glossary/dispersion.md) 2.00× [Shell velocity](/glossary/shell-velocity.md) 1,007m/s [Max range](/glossary/max-range.md) 720m [Caliber](/glossary/caliber.md) 122mm [Ammo capacity](/glossary/ammo-rack.md) 40 [… potential damage](/glossary/ammo-rack.md) 15,600hp [Shell cost](/glossary/service-cost.md) 1,025 [… full ammo](/glossary/service-cost.md) 41,000 [Gun depression](/glossary/gun-depression.md) 15° [Gun elevation](/glossary/gun-elevation.md) 5° [Gun traverse range](/glossary/gun-arc.md) 360° ### Mobility [Top speed](/glossary/top-speed.md) 50km/h [Reverse speed](/glossary/reverse-speed.md) 15km/h [Engine power](/glossary/engine-power.md) 750hp [Power/weight](/glossary/power-to-weight.md) 14.6hp/t [Hull traverse](/glossary/hull-traverse.md) 35.0°/s [Turret traverse](/glossary/turret-traverse.md) 26.0°/s [Terrain resistance](/glossary/terrain-resistance.md) [… hard](/glossary/terrain-resistance.md) 1.30 [… medium](/glossary/terrain-resistance.md) 1.70 [… soft](/glossary/terrain-resistance.md) 2.50 [Effective speed](/glossary/effective-speed.md) [… hard](/glossary/effective-speed.md) 41.1km/h [… medium](/glossary/effective-speed.md) 31.5km/h [… soft](/glossary/effective-speed.md) 21.4km/h [Effective traverse](/glossary/effective-traverse.md) [… hard](/glossary/effective-traverse.md) 35.0°/s [… medium](/glossary/effective-traverse.md) 26.8°/s [… soft](/glossary/effective-traverse.md) 18.2°/s ### Survivability [Hit points](/glossary/hit-points.md) 1,900hp [Hull armor](/glossary/armor-thickness.md) [… front](/glossary/armor-thickness.md) 130mm [… side](/glossary/armor-thickness.md) 130mm [… rear](/glossary/armor-thickness.md) 70mm [Turret armor](/glossary/armor-thickness.md) [… front](/glossary/armor-thickness.md) 249mm [… side](/glossary/armor-thickness.md) 110mm [… rear](/glossary/armor-thickness.md) 70mm [Track armor](/glossary/tracks.md) 20mm [Fire chance](/glossary/engine-fire.md) 12.0% [Track repair time](/glossary/tracks.md) 12.03s [Module HP (max / repaired)](/glossary/critical-hit.md) [… ammo rack](/glossary/ammo-rack.md) 210 / 140hp [… track](/glossary/tracks.md) 220 / 165hp [… engine](/glossary/critical-hit.md) 370 / 185hp [… fuel tank](/glossary/critical-hit.md) 200 / 80hp [… turret ring](/glossary/critical-hit.md) 160 / 80hp [… viewport](/glossary/critical-hit.md) 110 / 55hp ### Spotting & other [View range](/glossary/view-range.md) 380m [Signal range](/glossary/radio-range.md) 730m [Camouflage](/glossary/camouflage.md) [… stationary](/glossary/camouflage.md) 6.3% [… moving](/glossary/camouflage.md) 3.2% [… stationary, after firing](/glossary/camouflage.md) 5.3% [… moving, after firing](/glossary/camouflage.md) 2.7% [Weight](/glossary/weight.md) 51.3t ## Ammunition ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Fammopanel%2Fammo%2FARMOR_PIERCING.png&w=96&q=75)AP390 · 225 mm![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Fammopanel%2Fammo%2FARMOR_PIERCING_CR_PREMIUM.png&w=96&q=75)APCR390 · 265 mm![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Fammopanel%2Fammo%2FHIGH_EXPLOSIVE_MODERN.png&w=96&q=75)HE530 · 68 mm ## Equipment ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FimprovedConfiguration.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FantifragmentationLining.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2Fstereoscope.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FcoatedOptics.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FcamouflageNet.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FimprovedVentilation.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2Fgrousers.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2Frammer.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FenhancedAimDrives.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FaimingStabilizer.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FadditionalInvisibilityDevice.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FextraHealthReserve.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FimprovedRotationMechanism.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2Fturbocharger.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FimprovedSights.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FmodernizedAimDrivesAimingStabilizer.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FdemountKit%2Fexperimental_level_icon_lvl1.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FmodernizedTurbochargerRotationMechanism.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FdemountKit%2Fexperimental_level_icon_lvl1.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FmodernizedExtraHealthReserveAntifragmentationLining.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FdemountKit%2Fexperimental_level_icon_lvl1.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FmodernizedImprovedSightsEnhancedAimDrives.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FdemountKit%2Fexperimental_level_icon_lvl1.png&w=64&q=75) ## Consumables ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FsmallRepairkit.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FlargeRepairkit.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FsmallMedkit.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FlargeMedkit.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FhandExtinguishers.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FautoExtinguishers.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FqualityFuel.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FexcellentFuel.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2Fration.png&w=64&q=75) ## Directives ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2Frammer.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FcoatedOptics.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FaimingStabilizer.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FenhancedAimDrives.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2Fturbocharger.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fartefact%2FimprovedSights.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcamouflage.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fgunner_smoothTurret.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fdriver_virtuoso.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fdriver_smoothDriving.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2FfireFighting.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fgunner_rancorous.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Floader_pedant.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fradioman_lastEffort.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcommander_practical.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcommander_enemyShotPredictor.png&w=64&q=75) ## Field Modifications ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FvehPostProgression%2FactionItems%2FmodificationWithFeature%2F120x80%2FshellsConsumablesSwitch.png&w=96&q=75) II ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FvehPostProgression%2FactionItems%2FpairModifications%2F80x80%2FadditionalGrousers.png&w=96&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FvehPostProgression%2FactionItems%2FpairModifications%2F80x80%2FbetterFriction.png&w=96&q=75) ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FvehPostProgression%2FactionItems%2FmodificationWithFeature%2F120x80%2FoptDevBoostersSwitch.png&w=96&q=75) IV ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FvehPostProgression%2FactionItems%2FpairModifications%2F80x80%2FimprovedScope.png&w=96&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FvehPostProgression%2FactionItems%2FpairModifications%2F80x80%2FimprovedAimingHandling.png&w=96&q=75) V ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FvehPostProgression%2FactionItems%2FpairModifications%2F80x80%2FimprovedSpallingResistance.png&w=96&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FvehPostProgression%2FactionItems%2FpairModifications%2F80x80%2FimprovedObservationDevice.png&w=96&q=75) ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FvehPostProgression%2FactionItems%2FmodificationWithFeature%2F120x80%2FroleSlot.png&w=96&q=75) VII ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FvehPostProgression%2FactionItems%2FpairModifications%2F80x80%2FimprovedSpeedIndicator.png&w=96&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2FvehPostProgression%2FactionItems%2FpairModifications%2F80x80%2FimprovedTurretTurningWheels.png&w=96&q=75) ## Crew Skills Crew level100% ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fstatic%2Flatest%2Fwotp_static%2Fimg%2Ftankopedia_new%2Ffrontend%2Fscss%2Ftankopedia-detail%2Fimg%2Fcrew%2Fussr-face-1.png&w=96&q=75)![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fstatic%2Flatest%2Fwotp_static%2Fimg%2Ftankopedia_new%2Ffrontend%2Fscss%2Ftankopedia-detail%2Fimg%2Fcrew%2Fcommander.webp&w=32&q=75)Commander / Radio Operator ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Frepair.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcamouflage.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fbrotherhood.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcommander_tutor.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcommander_eagleEye.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcommander_enemyShotPredictor.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcommander_practical.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcommander_emergency.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcommander_coordination.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcommander_holdLine.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcommander_staySharp.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2FfireFighting.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fradioman_finder.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fradioman_interference.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fradioman_signalInterception.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fradioman_sideBySide.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fradioman_expert.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fradioman_battleTempered.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fradioman_threatSearch.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fstatic%2Flatest%2Fwotp_static%2Fimg%2Ftankopedia_new%2Ffrontend%2Fscss%2Ftankopedia-detail%2Fimg%2Fcrew%2Fussr-face-2.png&w=96&q=75)![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fstatic%2Flatest%2Fwotp_static%2Fimg%2Ftankopedia_new%2Ffrontend%2Fscss%2Ftankopedia-detail%2Fimg%2Fcrew%2Fdriver.webp&w=32&q=75)Driver ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Frepair.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcamouflage.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fbrotherhood.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fdriver_virtuoso.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fdriver_smoothDriving.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fdriver_badRoadsKing.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fdriver_rammingMaster.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fdriver_motorExpert.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fdriver_reliablePlacement.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fdriver_suspensionRepair.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fdriver_bulletproof.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fstatic%2Flatest%2Fwotp_static%2Fimg%2Ftankopedia_new%2Ffrontend%2Fscss%2Ftankopedia-detail%2Fimg%2Fcrew%2Fussr-face-3.png&w=96&q=75)![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fstatic%2Flatest%2Fwotp_static%2Fimg%2Ftankopedia_new%2Ffrontend%2Fscss%2Ftankopedia-detail%2Fimg%2Fcrew%2Fgunner.webp&w=32&q=75)Gunner ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Frepair.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcamouflage.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fbrotherhood.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fgunner_sniper.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fgunner_smoothTurret.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fgunner_rancorous.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fgunner_focus.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fgunner_quickAiming.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fgunner_armorer.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fgunner_pointBlast.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fgunner_loneWolf.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fstatic%2Flatest%2Fwotp_static%2Fimg%2Ftankopedia_new%2Ffrontend%2Fscss%2Ftankopedia-detail%2Fimg%2Fcrew%2Fussr-face-4.png&w=96&q=75)![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fstatic%2Flatest%2Fwotp_static%2Fimg%2Ftankopedia_new%2Ffrontend%2Fscss%2Ftankopedia-detail%2Fimg%2Fcrew%2Floader.webp&w=32&q=75)Loader ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Frepair.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fcamouflage.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Fbrotherhood.png&w=64&q=75) ![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Floader_pedant.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Floader_desperado.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Floader_intuition.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Floader_perfectCharge.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Floader_ammunitionImprove.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Floader_melee.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Floader_magMastery.png&w=64&q=75)![](/_next/image?url=https%3A%2F%2Fraw.githubusercontent.com%2Funicum-gg%2Fwot.assets%2FWG%2Fgui%2Fmaps%2Ficons%2Ftankmen%2Fskills%2Fbig%2Floader_secondChance.png&w=64&q=75) ## Object 257 modules ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fmodule%2Fico-guns.gif&w=128&q=75) VIII122 mm BL-9 (257)Stock ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fmodule%2Fico-guns.gif&w=128&q=75) IX122 mm BL-13-1 (257) 56K280K ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fmodule%2Fico-head.gif&w=128&q=75) VIIIIS-3 (257)Stock ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fmodule%2Fico-head.gif&w=128&q=75) IXObject 257 24.8K62K ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fmodule%2Fico-engine.gif&w=128&q=75) VIIIV-2-54 (257)Stock ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fmodule%2Fico-engine.gif&w=128&q=75) IX2x V-16 (257) 48K125K ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fmodule%2Fico-transm.gif&w=128&q=75) VIIIObject 257Stock ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fmodule%2Fico-transm.gif&w=128&q=75) IXObject 257 Version 2 24K62.5K ![](/_next/image?url=https%3A%2F%2Fapi.worldoftanks.com%2Fstatic%2F2.77.0%2Fwot%2Fencyclopedia%2Fmodule%2Fico-radio.gif&w=128&q=75) XR-113Stock ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr151_object_257_2%2Fr151_object_257_2_icon.svg&w=64&q=75) IXObj. 257 [ ![](/_next/image?url=https%3A%2F%2Fna-wotp.wgcdn.co%2Fdcont%2Ftankopedia_images%2Fr45_is-7%2Fr45_is-7_icon.svg&w=64&q=75) XIS-7191.5K ](/na/tanks/is-7.md) ## Object 257 historical reference 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. ## Object 257 videos No videos yet No community video for the Object 257 yet. Suggest one and it shows up here once a moderator has looked at it. [Log in to suggest a video](/api/auth/sign-in/wargaming.md?region=na&callbackURL=/na/tanks/obj-257) ## Navigation - [unicum.gg](/na.md) - [Discord](https://discord.gg/Hqbfb8YPbU) - [GitHub](https://github.com/unicum-gg/unicum.gg) ## Indexes - [llms.txt](/llms.txt): the API, the MCP server and the other machine-readable surfaces. - [llms-full.txt](/llms-full.txt): the same, with every endpoint's parameters inline. - [sitemap.md](/sitemap.md): every section of the site, down to the individual pages.