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M551 Sheridan
Photo: Mark Holloway from Anaconda, Montana · Wikimedia Commons · CC BY 2.0
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M551Sheridan

Tanks · United States · 1969
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M551Sheridan

M551 Sheridan
M551 Sheridan Photo: Mark Holloway from Anaconda, Montana · Wikimedia Commons · CC BY 2.0
* Absolute score — assessed within category · no era adjustment
Firepower
60
Protection
30
Mobility
70
Technology
50
Reliability
40
Crew Survivability
35
Operational Range
55
Logistics
45
Historical Performance
50
Strategic Impact
40
Origin United States
ManufacturerGeneral Motors, Allison Engine Company
CategoryTanks
EraCold War
In service1969–1970
Operators2 countries
Quantity1,662
Data Quality87%
MASS(Military Archive Scoring System)
48
Tanks MASS Rating
57/89
Cold War
195/563
All-Time
Tanks · 10 axes scored
Firepower
60
Protection
30
Mobility
70
Technology
50
Reliability
40
Crew Survivability
35
Operational Range
55
Logistics
45
Historical Performance
50
Strategic Impact
40
ⓘ Regardless of era, the same scoring system applies to all units in the tanks category.
01 / Overview
M551 Sheridan
Category
Production
1969–1970
Quantity
1,662
Operators
Conflicts
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
TANKS · COLD WAR
57
PERFORMANCE/PRICE
30
UNIT COST (2025 USD)
—
48
tanks category
ⓘ Performance/Price and MASS score are computed across all units in the tanks category, regardless of era.
02 / Specs & Design
◎General5MOD.5
  • Tank ClassificationLight Tank
  • GenerationCold War
  • Combat Weight15.24 t
  • Crew Size4
  • Service Entry Year1967
◈Firepower8MOD.8
◇Mobility7MOD.7
  • Engine Power300 hp
  • Power-to-Weight Ratio17.9 hp/t
  • Fuel TypeDiesel
  • Transmission TypeFully Automatic
  • Suspension TypeTorsion Bar
  • Max Road Speed69 km/h
  • Operational Range (Road)563 km
◆Dimensions4MOD.4
  • Length (Hull)6.3 m
  • Width2.79 m
  • Height2.95 m
  • Ground Clearance0.48 m
⬢Amphibious & Special3MOD.3
▲Production & Service3MOD.3
  • Total Production Units1,662
  • Current Service StatusRetired
  • Notable Variants Count6
03 / History
SERVICE LIFESPANStill in Service
  1. 1945First deployment: Cold War
  2. 1966Entered service
  3. 1969Production started
  4. 1970Production ended
57
years in service
1
years in production
1,662
units produced
2
countries operating
ⓘ The producing country still actively operates it.
04 / Conflicts
M551 SHERIDAN · CONFLICTS SERVED IN100% win
Total Conflicts
1
Victories
1
Ongoing
0
Losses
0
ⓘ Shown only from conflicts recorded in our database.
05 / Operators
Operator Inventory1country · 1,200units
1,200active
📖 TERMS ON THIS PAGE14terms
Anti-Tank Guided Missile: a missile designed to destroy tanks.
Type of internal combustion engine fuel, refined from crude oil.
A fully automatic tank transmission shifts gears without driver intervention, using hydraulic or electronic controls to select appropriate gear ratios based on engine speed and vehicle load.
High-Explosive Fragmentation: ammunition that explodes on impact, releasing fragments.
High-Explosive Anti-Tank: a type of projectile that uses a shaped charge to penetrate armor.
A tank with reduced armor and weight for increased mobility.
Nuclear, Biological, Chemical protection for tank crews.
Enhanced low-light visibility through specialized optics or sensors.
A rifled gun has spiral grooves cut into its barrel.
Handheld or vehicle-mounted devices that release dense smoke to obscure vision, conceal movements, or screen friendly forces from enemy observation.
Fire control system generation using gyroscopically stabilized optics to improve accuracy during vehicle movement.
A torsion bar is a steel rod that resists twisting and serves as a spring in tank suspensions, with one end fixed to the hull and the other connected to a lever arm moving the road wheel.
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 →