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EE-T1 Osório
Photo: Andrés Monge · Wikimedia Commons · Public domain
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EE-T1Osório

Tanks · Brazil · 1986
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EE-T1Osório

EE-T1 Osório
EE-T1 Osório Photo: Andrés Monge · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
Firepower
60
Protection
50
Mobility
40
Technology
30
Reliability
40
Crew Survivability
50
Operational Range
50
Logistics
30
Historical Performance
20
Strategic Impact
10
Origin Brazil
CategoryTanks
EraCold War
In service1986–1986
Operators2 countries
Quantity2
Data Quality84%
MASS(Military Archive Scoring System)
42
Tanks MASS Rating
74/89
Cold War
251/563
All-Time
Tanks · 10 axes scored
Firepower
60
Protection
50
Mobility
40
Technology
30
Reliability
40
Crew Survivability
50
Operational Range
50
Logistics
30
Historical Performance
20
Strategic Impact
10
ⓘ Regardless of era, the same scoring system applies to all units in the tanks category.
01 / Overview
EE-T1 Osório
Category
Country
Production
1986–1986
Quantity
2
Unit Price (current)
$1.3M
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
TANKS · COLD WAR
74
PERFORMANCE/PRICE
20
UNIT COST (2025 USD)
$1.3M
Inflation: +%0
42
tanks category
ⓘ Performance/Price and MASS score are computed across all units in the tanks category, regardless of era.
02 / Specs & Design
◎General4MOD.4
◈Firepower7MOD.7
▣Protection5MOD.5
◇Mobility7MOD.7
  • Engine Power1,100 hp
  • Power-to-Weight Ratio26 hp/t
  • Fuel TypeDiesel
  • Transmission TypeFully Automatic
  • Suspension TypeHydropneumatic
  • Max Road Speed70 km/h
  • Operational Range (Road)550 km
◆Dimensions4MOD.4
  • Length (Hull)7.13 m
  • Length (Overall, Gun Forward)10.1 m
  • Width3.26 m
  • Height2.37 m
▲Production & Service4MOD.4
  • Total Production Units2
  • Years in Production1 year
  • Current Service StatusPrototype Only
  • Notable Variants Count0
03 / History
SERVICE LIFESPANStill in Service
  1. 1986Production started
40
years in service
0
years in production
2
units produced
2
countries operating
ⓘ The producing country still actively operates it.
04 / Operators
📖 TERMS ON THIS PAGE15terms
Armour-piercing fin-stabilized discarding sabot: a type of kinetic energy penetrator ammunition.
Armour made from multiple materials, such as metals and ceramics, to increase effectiveness.
Computerised Advanced: a tank fire‑control system generation that uses digital computers to calculate ballistic solutions and integrate sensor data for enhanced targeting accuracy.
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.
Hydropneumatic suspension employs hydraulic fluid and compressed gas in sealed chambers to provide variable damping and ride height, allowing tanks to adjust ground clearance and improve cross‑country mobility.
Optical device that uses laser pulses to measure the distance to a target with high precision.
A main battle tank is a heavily armored vehicle with a large caliber gun, used for front-line combat.
Nuclear, Biological, Chemical protection for tank crews.
Enhanced low-light visibility through specialized optics or sensors.
Handheld or vehicle-mounted devices that release dense smoke to obscure vision, conceal movements, or screen friendly forces from enemy observation.
A smoothbore gun is a firearm with an unrifled barrel, allowing projectiles to travel without spin; it is commonly used in modern tank main guns for firing fin‑stabilized ammunition.
Thermal sights are infrared imaging devices mounted on a tank's gunner station that detect heat emitted by objects, enabling target identification and aiming in low‑visibility conditions.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Tanks entry →