DOSSIER · UNCLASSIFIED · OPERATIONS
SECTION 10 // ARMOR / VEHICLE PROFILEREF · OBJECT-277
Object 277
X

Object 277

USSRUSSR·Heavy TankHeavy Tank·HT break

Developed in 1956–1958 at the Kirov Plant, Leningrad, under the supervision of Joseph Kotin. Two prototypes were produced and underwent trials from 1959 through 1960. A hull and a turret were produced for testing for shell resistance. The development was discontinued in the summer of 1960 due to insufficient development of certain systems and components. In addition, the vehicle did not demonstrate any advantage over the Object 770 heavy tank.

Health
2,200
DPM
2,352
View range
400m
Speed
55km/h
Camo
23Poor
Mark of Excellence requirementsCombined dmg + assist · NA · 2026-08-25
3 marks of excellence
3 marks · 95%
4,051
2 marks of excellence
2 marks · 85%
3,227
1 mark of excellence
1 mark · 65%
2,246
A-01 · ARMOR SCHEMA

Armor thicknessMeasured

Nominal plate thickness straight from the game client. Click any plate to highlight it on the 3D model and focus the camera on it.

Armor
16mm
290mm

Hull

All 13 plates

Turret

All 11 plates
A-02 · SPECIFICATIONS

Specifications

Builds
Grade
Experimental
CrewShared perks
Field mods
Lv 0/8
Weaponry
DPM
2,352
Damage
490
Penetration
265 mm
… at 500m
245 mm
Reload time
12.50 s
Rate of fire
4.80/min
Aim time
2.70 s
Dispersion
0.380 m
… moving
0.160
… tank traverse
0.160
… turret traverse
0.080
… after firing
4.0
Damage vs. modules
180
Caliber
130.0 mm
Shell velocity
1,030 m/s
Max range
720 m
Ammo capacity
35
Potential damage
17,150
Shell cost
1,250 cr
Mobility
Top speed
55 km/h
Reverse speed
15 km/h
Power/weight
17.27 hp/t
Tank traverse
32.0 °/s
Turret traverse
27.0 °/s
Effective top speed
… hard
53.1 km/h
… medium
38.4 km/h
… soft
22.3 km/h
Effective traverse
… hard
32.0 °/s
… medium
23.1 °/s
… soft
13.4 °/s
Gun elevation
16 °
Gun depression
6 °
Gun traverse range
360°
Terrain resistance
… hard
1.30
… medium
1.80
… soft
3.10
Everything Else
Hull armor
140 / 112 / 50
Turret armor
290 / 224 / 80
Health
2,200
Engine health
360
… repaired
180
Track health
250
… repaired
190
… repair time
6.86 s
Ammo rack health
210
… repaired
140
Fuel tank health
200
… repaired
80
Total weight
55,000 kg
Stationary camo
6.00 / 1.08%
Moving camo
3.00 / 0.54%
View range
400 m
Fire chance
12%
Tank cost
6,100,000 cr
Gun Constraints

360° traverse

Crew
  • CommanderRadio Operator
  • Gunner
  • Driver
  • Loader
A-03 · SERVER PERFORMANCE

Server performance

Aggregate stats from NA players over the last 30d

Avg WN8
1361
Good
Avg WNX
1285
good
Win rate
47.8%
Bad
DPG
1824
Frags
0.65
Spots
1.41
Survival
22.4%
Dmg taken
2166
Hit rate
76.4%
Spot assist
424
Track assist
53
Defense
0.13
Avg XP
767

Aggregated from 3,164 tracked NA players · 15,063 battles. Coverage grows as more players are tracked.

MoE thresholds (combined dmg + assist)
65%2,246
85%3,227
95%4,051

Reach these combined damage (dealt + assist) values over a rolling window to earn marks of excellence.

Performance over time

Daily NA 30-day aggregates — how this tank trends as patches and meta shift

Loading

Population spread

How NA players actually perform in this tank (30-day window)

Loading
A-04 · TOP OPERATORS

Top players

Highest performers in the Object 277 on NA

  1. #1RahatLokum124 battles4,482
  2. #2Kenway___161 battles4,477
  3. #3Franchini_101 battles4,470
  4. #4taco_jr188 battles4,427
  5. #5_Deft150 battles4,356
  6. #6xXbaguesXx134 battles4,322
  7. #7DarkNinja_208 battles4,306
  8. #8Silver__Ghost291 battles4,303
  9. #9RECTlFlER101 battles4,290
  10. #10__M_E_H_T__136 battles4,202
A-05 · VIDEO INTEL

Video reviews

Curated reviews, replays, and guides from veteran players

A-06 · SIMILAR HULLS

Similar tanks

Closest matches by stat profile — pick the ones that fit your playstyle.

A-07 · CHANGELOG

Balance changelog

What changed for this tank between game versions

No tracked balance changes

When this tank gets buffed or nerfed in a patch, the change shows up here.

The full USSR tech tree