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RIM-66 / RIM-67 Standard Missile

The Standard Missile-2 (SM-2) is the Navy’s primary surface-to-air fleet defense weapon. The currently deployed SM-2 Block II/III/IIIA configurations are all-weather, ship-launched medium-range fleet air defense missiles derived from the SM-1 (RIM-GGB), which is still in the fleet. SM-2 employs an electronic countermeasures-resistant monopulse receiver for semi-active radar terminal guidance and inertial midcourse guidance capable of receiving midcourse command updates from the shipboard fire control system. SM-2 is launched from the Mk 41 Vertical Launching System (VLS) and the Mk 26 Guided Missile Launching System (GMLS). SM-2 continues to evolve to counter expanding threat capabilities, and improvements in advanced high and low-altitude threat interception, particularly in stressing electronic countermeasures (ECM) environments, are being implemented through modular changes to the missile sections.

The Standard Missile was produced in two major types, the SM-1 MR/SM-2 (medium range) and the SM-2 (extended range). It is one of the most reliable in the Navy's inventory. Used against missiles, aircraft and ships, it first came into the fleet more than a decade ago. It replaced Terrier and Tartar missiles and is part of the weapons suit of more than 100 Navy ships. The SM-2 (MR) is a medium range defense weapon for Ticonderoga-class AEGIS cruisers, Arleigh Burke-class AEGIS destroyers, California and Virginia-class nuclear cruisers and Kidd-class destroyers with NTU conversions. Oliver Hazard Perry-class frigates use the SM-1 MR.

The SM-2 is a solid propellant-fueled, tail-controlled, surface to air missile fired by surface ships. Designed to counter high-speed, high-altitude anti-ship cruise missiles (ASCMs) in an advanced ECM environment, its primary mode of target engagement uses mid-course guidance with radar illumination of the target by the ship for missile homing during the terminal phase. The SM-2 can also be used against surface targets. SM-2 Blocks II through IV are long-range interceptors that provide protection against aircraft and antiship missiles, thereby expanding the battlespace.

These SM-2 versions are provided as medium range (MR) rounds that can be fired from Aegis rail launchers, Aegis vertical launch systems (VLS), and Tartar rail launchers.

Full production approvals for SM-2 Blocks have been as follows: Block II was approved in December 1986; Block III in June 1988; Block IIIA in February 1992; and Block IIIB in September 1996, following the OPEVAL summarized below. Block IV was approved for LRIP in May 1995, but further development and procurement were deferred, depending on development of the Block IVA missile, the interceptor for the Navy Area TBMD program, and Block IVA retention of Block IV capability against anti-air warfare threats. On April 16, 1999 Raytheon Systems Company, Tucson AZ, was awarded a not-to-exceed $135,236,224 fixed-price with award-fee, letter contract for the procurement of 71 SM-2 Block IIIB (AUR's), 63 SM-2 Block IIIB ORDALT kits to upgrade SM-2 Block III missiles to SM-2 Block IIIB, 43 SM-2 Block IV AUR's, 100 AN/DKT-71A telemetric data transmitting sets, section level spares, shipping containers and handling equipment.


SM-1 Medium Range SM-2 Medium Range SM-1 Extended Range SM-2 Extended Range
Primary FunctionSurface to air missile
  • Hughes Missile Systems Company (formerly General Dynamics' Ponoma Division, sold to Hughes in 1992) Ponoma Division;
  • Raytheon Motorola;
  • Morton-Thiokol;
  • Aerojet General
  • and others
  • Unit cost $402,500 $421,400 $409,000
    Power plant Single-stage, Dual thrust, solid fuel rocket Two-stage, solid-fuel rocket;
    sustainer motor and booster motor
    Length 14 feet, 7 inches (4.41 meters) 26.2 feet (7.9 meters)
    Diameter 13.5 inches (34.3 cm)
    Wing Span 3 feet 6 inches (1.08 meters) 5 feet 2 inches (1.6 meters)
    Weight 1,100 pounds (495 kg) 1,380 pounds (621 kg) 2,980 pounds (1341 kg)
    Range 15-20 nautical miles
    (17-23 statute miles)
    40-90 nautical miles
    (46-104 statute miles)
    65-100 nautical miles
    (75-115 statute miles)
    Guidance system Semi-active radar homing Inertial/semi-active radar homing
    Warhead Proximity fuse, high explosive
    Date Deployed 1970 1981 1981
    Launch Systems
    Launch Platforms

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    Updated Sunday, April 18, 1999 10:27:53 AM