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Object 277
Photo: Uwe Brodrecht · Wikimedia Commons · CC BY-SA 2.0
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Object277

Tanks · Russia · 1958
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Object277

Object 277
Object 277 Photo: Uwe Brodrecht · Wikimedia Commons · CC BY-SA 2.0
* Absolute score — assessed within category · no era adjustment
Firepower
85
Protection
70
Mobility
65
Technology
75
Reliability
55
Crew Survivability
60
Operational Range
60
Logistics
50
Historical Performance
40
Strategic Impact
30
Origin Russia
CategoryTanks
EraEarly Cold War
In service1958–1960
Operators1 countries
Quantity2
Data Quality84%
MASS(Military Archive Scoring System)
65
Tanks MASS Rating
6/54
Early Cold War
68/563
All-Time
Tanks · 10 axes scored
Firepower
85
Protection
70
Mobility
65
Technology
75
Reliability
55
Crew Survivability
60
Operational Range
60
Logistics
50
Historical Performance
40
Strategic Impact
30
ⓘ Regardless of era, the same scoring system applies to all units in the tanks category.
01 / Overview
Object 277
Category
Country
Production
1958–1960
Quantity
2
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
TANKS · EARLY COLD WAR
6
PERFORMANCE/PRICE
45
UNIT COST (2025 USD)
—
65
tanks category
ⓘ Performance/Price and MASS score are computed across all units in the tanks category, regardless of era.
02 / Specs & Design
◎General2MOD.2
  • Combat Weight55 t
  • Crew Size4
◈Firepower3MOD.3
▣Protection4MOD.4
◇Mobility4MOD.4
  • Engine Power1,090 hp
  • Power-to-Weight Ratio19.82 hp/t
  • Fuel TypeDiesel
  • Max Road Speed55 km/h
◆Dimensions3MOD.3
  • Length (Hull)11.78 m
  • Width3.38 m
  • Height2.292 m
03 / History
SERVICE LIFESPANRetired
  1. 1958Production started
  2. 1960Production ended
68
years in service
2
years in production
2
units produced
0
countries operating
ⓘ 1 countries retired it.
04 / Operators
Operator Countries1country
📖 TERMS ON THIS PAGE4terms
Armour-piercing fin-stabilized discarding sabot: a type of kinetic energy penetrator ammunition.
Type of internal combustion engine fuel, refined from crude oil.
Nuclear, Biological, Chemical protection for tank crews.
Armour made by welding and rolling homogeneous steel plates.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Tanks entry →