OVERVIEW: The RIM-7E Sea Sparrow is a U.S. ship-launched, short-range, semi-active radar-guided surface-to-air missile, adapted from the AIM-7E Sparrow air-to-air missile. It was the first navalized version, providing point defense against aerial threats.

DETAILS: Introduced in the early 1970s, the RIM-7E was essentially an unmodified AIM-7E adapted for shipboard use. It was launched from the Mk 25 Guided Missile Launching System (GMLS), a modified ASROC launcher . The missile featured fixed wings and was guided by continuous wave radar illumination, requiring manual tracking and engagement. The system provided a rapid solution for enhancing shipboard air defense capabilities against high-speed, low-altitude threats, such as anti-ship missiles and aircraft .

SPECIFICATIONS:
Guidance: Semi-active radar homing
Warhead: 39 kg (86 lbs) blast-fragmentation
Accuracy: Dependent on radar lock; limited in look-down/shoot-down scenarios
Length: 3.66 m (12 ft)
Diameter: 0.203 m (8 in)
Wingspan: 1.02 m (40.2 in)
Total Weight: 230 kg (510 lbs)
Platforms: Mk 25 GMLS (modified ASROC launcher)

Range: Approximately 19 km (10 nmi)
Speed: Mach 4+
Maneuverability: Up to 18 g in terminal phase

NOTES:
IOC: Early 1970s
Operators: United States, Japan
Combat Use: Deployed for ship self-defense; specific combat engagements are not widely documented
Interesting Fact: The RIM-7E's adaptation marked the beginning of the Sea Sparrow missile family, leading to subsequent enhancements in naval air defense systems.

SOURCES:
U.S. Navy Fact File; Weaponsystems.net; U.S. Naval Institute; en.wikipedia.org