Fact Sheet

Fact Sheet: 2B1 Oka “Transformer” (Obiekt 273)

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Production Numbers: 4 Prototypes

Dimensions (Length/Width/Height): 27.85/3.08/5.73 meters

Main Armament: The World’s Largest Mortar.

• 420mm 2B2 (47.5 calibers) smoothbore mortar with a 20-meter-long barrel
• Fire Rate: 0.2 rounds per minute (one round every 5 minutes)
• Maximum Payload per round: 750kg
• Firing Range: 25km with RDS-41 nuclear charge, 50km with active-reactive ammunition

Chassis: Based on the T-10M/IS-8 Heavy Tank Chassis

Armor: Able to stop 7.62mm rifle bullets.

Combat weight: 55.3 tons

Top Speed: 30km/h

Highway Cursing Range: 220km

Engine: V-12-6B liquid-cooled diesel engine, 750 horsepower

Power to Weight Ratio: 13.6 hp/ton