Harpoon (missile)

Harpoon (missile)
Name	Harpoon
Caption	AGM-84 Harpoon aboard USS Nimitz (CVN-68)
Origin	United States
Type	Anti-ship missile
Service	1977–present
Used by	United States Navy, Royal Navy, Japan Maritime Self-Defense Force, Republic of Korea Navy, Royal Australian Navy, Royal Netherlands Navy, Royal Canadian Navy, Armed Forces of the Philippines
Designer	Boeing Defense, Space & Security (formerly McDonnell Douglas)
Manufacturer	Boeing, McDonnell Douglas
Weight	684 kg (AGM-84A)
Length	3.8 m
Diameter	34 cm
Wingspan	1.1 m
Speed	subsonic (~0.85 Mach)
Vehicle range	124 km (initial), up to 340 km (variants)
Filling	221 kg high-explosive blast/fragmentation
Guidance	active radar homing, INS, GPS, TERCOM (variants)
Propulsion	turbojet (Teledyne-Ryan J-69 variants), solid rocket booster (launch)

Harpoon (missile) The Harpoon is an American all-weather, over-the-horizon, anti-ship missile developed for maritime strike and littoral warfare. It entered service in the late 1970s and has been deployed by numerous navies and air forces globally, influencing naval doctrine, ship design, and anti-access/area-denial discussions. Its development involved collaboration among United States Navy program offices, defense contractors, and allied procurement agencies, producing a family of sea, air, submarine, and coastal variants.

Development and Design

Development began in the early 1970s as part of a procurement effort led by the United States Navy to replace earlier systems such as the Harpoon (missile) predecessor programs and to counter evolving Soviet surface combatants and missile threats. Contractors including McDonnell Douglas and subcontractors such as Teledyne Ryan produced prototypes tested at ranges like Point Mugu and White Sands Missile Range, influencing design choices in warhead, seeker, and propulsion. The baseline design emphasized a sea-skimming flight profile, robust active radar homing derived from research at Naval Air Systems Command, and adaptability for launch from surface ship, submarine, and aircraft platforms. Early operational requirements were set against Cold War scenarios involving task forces centered on Aircraft carrier, Battleship-era concepts, and blue-water engagements influenced by analyses from Office of Naval Research studies.

Variants and Upgrades

Harpoon evolved into multiple variants including ship-launched RGM-84, air-launched AGM-84, submarine-launched UGM-84, and coastal-defense adaptations used by forces such as Taiwan and Saudi Arabia. Upgrades produced Block changes, including the Harpoon Block 1C, Harpoon Block II, and Harpoon Block II+ integrating enhancements from programs sponsored by Naval Sea Systems Command and allied modernization initiatives with partners like Royal Australian Navy and Japan Maritime Self-Defense Force. Incremental improvements added GPS/INS navigation, improved signal processing from contractors such as Raytheon Technologies, and extended-range propulsion tested alongside international procurement projects with NATO participants. Export variants were supplied under Foreign Military Sales handled by Defense Security Cooperation Agency agreements to countries including Netherlands, Norway, South Korea, and Pakistan.

Guidance and Propulsion Systems

Guidance systems progressed from legacy active radar homing and inertial navigation to multimode suites incorporating Global Positioning System augmentation, terminal scene-matching, and passive target recognition developed from research at Naval Research Laboratory and industrial labs in Massachusetts and California. Propulsion uses a solid-rocket booster for launch and a turbojet sustainer for cruise, with engines derived from designs by Teledyne and suppliers in the Aerospace industry. Block II introduced enhanced guidance enabling littoral target discrimination, with integration testing involving platforms from Boeing and navies across Europe and Asia. Data-link experiments and networked targeting trials tied Harpoon to command nodes such as Aegis Combat System and airborne platforms like P-3 Orion and F/A-18 Hornet for over-the-horizon cueing.

Operational History

Harpoon saw operational deployment from the late Cold War into post–Cold War conflicts, contributing to maritime interdiction and strike missions during periods involving coalition actions led by United States commands and alliances like NATO. Notable deployments included patrols and exercises in the North Atlantic Treaty Organization area, Asia-Pacific scenarios with United States Seventh Fleet, and regional contingencies involving Persian Gulf task groups and multinational maritime security operations. Combat and exercise usage informed lessons incorporated by doctrines from United States Naval War College, influencing anti-surface warfare training syllabi and tactics studied by analysts at RAND Corporation. Several incidents involving surface-launched and air-launched firings demonstrated performance against varied target sets and environmental conditions.

Deployment and Platforms

Harpoon has been integrated onto a wide array of platforms including surface combatants like Arleigh Burke-class destroyer, carriers such as USS Nimitz (CVN-68), maritime patrol aircraft including P-3 Orion and P-8 Poseidon, strike aircraft like F/A-18 Hornet and F-16 Fighting Falcon modifications, and submarine platforms with encapsulated UGM variants compatible with Los Angeles-class submarine and export classes. Coastal batteries using truck-mounted or fixed launchers were fielded by countries including Taiwan and United Arab Emirates under procurement programs coordinated by national ministries and defense contractors. Integration work involved combat systems from firms such as Lockheed Martin and testing ranges like Pacific Missile Range Facility.

Countermeasures and Survivability

Survivability against Harpoon has driven deployment of electronic warfare suites, decoys, and layered defenses developed by suppliers including Northrop Grumman and BAE Systems, with tactics taught at institutions like Naval War College and simulation centers in United Kingdom and United States. Countermeasures include radar jamming, chaff, towed decoys, and hard-kill systems such as close-in weapon systems exemplified by Phalanx CIWS and missile defenses integrated into Aegis Combat System cruisers and destroyers. Studies by Office of the Secretary of Defense and research from Defense Advanced Research Projects Agency examine signature reduction, salvo tactics, and cooperative engagement to mitigate salvo saturation and enhance fleet survivability in contested littoral and blue-water environments.

Category:Anti-ship missiles