SM-2 Standard Missile

Maker	Raytheon (RTX)
Origin	United States
Built	Tucson, Arizona, USA (majority of Raytheon SM-2 work)
First combat	1988, Persian Gulf
Length	4.7 m
Span	1.1 m
Diameter	0.34 m
Launch weight	707 kg
Max range	167 km
Propulsion	Dual-thrust solid-fuel rocket motor
Guidance	Command and inertial midcourse, semi-active radar terminal homing (Block IIIB adds an infrared seeker)
Launcher	Mk 41 Vertical Launching System (one missile per cell) or Mk 26 launcher

Dimensions are for the SM-2 Block IIIA/IIIB medium-range round (CSIS: 15 ft 6 in, 13.5 in, about 1,558 lb, about 90 nautical miles); published speed is Mach 3.5 and ceiling above 25 km. The unit cost is the FY2025 Navy request for the newer Block IIIC, just over $2.5 million each; older blocks were about $2.1 million. The first combat firing in 1988 includes the USS Vincennes downing of Iran Air 655, and US Navy ships have fired SM-2s at Houthi missiles and drones since October 2023.

Sources (11)

1. SM-2 (CSIS Missile Threat) (length_m)
2. SM-2 (CSIS Missile Threat) (diameter_m)
3. SM-2 (CSIS Missile Threat), about 1,558 lb (launch_weight_kg)
4. SM-2 (CSIS Missile Threat), about 90 nmi (range_km)
5. SM-2 (CSIS Missile Threat) (guidance)
6. SM-2 (CSIS Missile Threat) (launcher)
7. RIM-66 Standard (Wikipedia) (span_m)
8. RIM-66 Standard (Wikipedia) (propulsion)
9. RIM-66 Standard (Wikipedia) (first_combat)
10. Raytheon Nabs $259 Million Contract For SM-2 Block IIICU All Up Rounds (Defense Daily) (built_where)
11. Replenishing Missiles Used To Down Houthi Threats Will Require Extra Funding (TWZ) (notes)