AKA: UR-500 Monoblok Stage 1M. Status: Design 1962. Thrust: 8,989.70 kN (2,020,965 lbf). Gross mass: 367,360 kg (809,890 lb). Unfuelled mass: 25,560 kg (56,350 lb). Specific impulse: 310 s. Specific impulse sea level: 280 s. Burn time: 115 s. Height: 30.00 m (98.00 ft). Diameter: 6.20 m (20.30 ft). Span: 6.20 m (20.30 ft).
No Engines: 4.