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Surface-to-air and surface-to-surface missile, mounted on surface ships.
Produced in two major types, the SM-1 MR/SM-2 (medium range) and the SM-2 (extended range).
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.
Replaced Terrier and Tartar missiles and is part of the weapons suit of more than 100 Navy ships.
Primary Function: Surface to air missile.
Unit cost: SM-1 MR $402,500; SM-2 MR $421,400.
Power plant: Dual thrust, solid fuel rocket.
Length: 14 feet, 7 inches (4.41 meters).
Weight: SM-1: 1,100 pounds (495 kg); SM-2: 1,380 pounds (621 kg).
Diameter: 13.5 inches (34.3 cm).
Wing Span: 3 feet 6 inches (1.08 meters).
Range:
15-20 nautical miles (17-23 statute miles)(SM-1 MR)
40-90 nautical miles (46-104 statute miles) (SM-2 MR)
Guidance system: Semi-active radar homing.
Warhead: Proximity fuse, high explosive.
Date Deployed: 1970 (SM-1 MR); 1981 (SM-2 MR).