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Exocet

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Exocet

Introduction

Exocet is a family of sea-skimming anti‑ship missiles developed by the French company Aérospatiale and later by its successor, Dassault Aviation. The original designation, MM 38, was introduced in the early 1970s, followed by the upgraded MM 40 model in the 1990s. The missile has seen widespread use by navies worldwide and has played a notable role in several naval conflicts, most famously during the Falklands War. Its design emphasizes low-altitude flight, high speed, and the ability to engage surface vessels of various sizes with a large, high‑explosive warhead.

History and Development

Early Conceptualization

In the post‑World War II era, advances in radar and guided missile technology prompted naval powers to explore sea‑skimming weapons capable of evading anti‑aircraft defenses. In France, the research and development program began in the late 1950s under the auspices of the French Ministry of Defence. Early studies focused on achieving a missile that could fly close to the water surface, thereby reducing the radar cross‑section and making detection difficult for enemy ships and air defenses.

Design and Prototype Testing

The first prototype, designated MM 38, entered flight trials in 1972. Engineers prioritized a combination of thrust vectoring and aerodynamic control surfaces to maintain stability at low altitudes. During test flights, the missile demonstrated the capability to cruise at altitudes of 5–10 meters above sea level while sustaining speeds up to 0.8 Mach. The guidance system employed an inertial navigation unit during the initial flight, transitioning to active radar homing in the terminal phase.

Entry into Service

Following successful trials, the French Navy incorporated the MM 38 into its frigate and destroyer fleets in 1975. Production was scaled up to meet export demands, with several European, Asian, and Middle Eastern countries acquiring the system. In 1992, the upgraded MM 40 was introduced, featuring improved propulsion, extended range, and an upgraded seeker for better resistance to electronic countermeasures.

Technical Design

Propulsion System

The Exocet employs a turbojet engine, originally a Potez 8S and later a more efficient version in the MM 40. The propulsion system provides sustained thrust that allows the missile to travel up to 70–80 kilometers, depending on the variant. The engine’s nozzle is designed to operate efficiently across a wide range of speeds and altitudes.

Guidance and Control

Initial guidance is achieved through an inertial navigation system (INS) that directs the missile along a pre‑programmed flight path to the target area. Once within range, the missile deploys its active radar seeker. The seeker uses a 3‑degree fan‑shaped radar beam to scan the sea surface, enabling the missile to detect and lock onto surface vessels with high precision. In the MM 40, the seeker incorporates phased‑array technology to improve target discrimination and resistance to jamming.

Warhead and Detonation

Both MM 38 and MM 40 carry a high‑explosive (HE) warhead with a shaped charge designed to penetrate a ship’s hull. The warhead weight is approximately 140 kilograms for the MM 38 and slightly increased for the MM 40. Detonation occurs either on impact or via a contact fuzing system, depending on the specific configuration selected by the user.

Variants

  • MM 38 – The original production version, with a range of 70 km and a launch platform compatibility that includes frigates, destroyers, and certain aircraft.
  • MM 40 – An upgraded version with a range of 80 km, improved seeker, and enhanced resistance to electronic countermeasures.
  • MM 40 LE – A land‑based launch variant capable of engaging coastal and harbor targets.
  • MM 40 ESM – A version equipped with an electronic support measures suite for intelligence gathering.

Operational History

Falklands War

The most prominent deployment of the Exocet was during the Falklands War between the United Kingdom and Argentina in 1982. Argentine Navy vessels, including the destroyer ARA  Santi  Gómez, launched MM 38 missiles at the Royal Navy’s HMS  Endeavour and HMS  Furious, resulting in significant damage and the eventual sinking of the latter. These events highlighted the missile’s effectiveness and raised concerns regarding the vulnerability of naval fleets to sea‑skimming attacks.

Other Conflicts

During the Gulf War (1990–1991), Iraqi forces attempted to use Exocet missiles against coalition naval vessels. While the missiles were launched, they were largely ineffective due to countermeasures and the lack of precision targeting. More recently, the missile has been employed by various states in regional conflicts across the Middle East, though specific engagements are often classified or unverified.

Training and Exercises

Naval forces worldwide routinely conduct exercises to test the Exocet’s readiness. These drills typically involve live‑fire launches from frigates or aircraft, followed by post‑exercise analysis to refine targeting algorithms and countermeasure strategies.

Deployment Platforms

Exocet missiles are typically launched from naval ships using vertical launch systems or fixed missile tubes. French frigates such as the La Fayette and the Horizon classes, as well as American destroyers modified for the platform, serve as common launch platforms. The missile’s launch module can be integrated into both conventional naval vessels and newer classes featuring modular missile launchers.

Aircraft

Some air forces have adapted the Exocet for launch from carrier aircraft. The French Dassault Rafale and the United States Navy’s F/A-18 Hornet have been modified to carry and launch the missile from internal or external pylons, expanding the missile’s tactical versatility.

Ground‑Based Launchers

Certain variants have been adapted for ground launch, enabling coastal defense forces to target ships approaching harbors. These land‑based systems incorporate a stabilizing mount and can be re‑loaded quickly to sustain a rapid response capability.

Export and Licensing

Since its introduction, Exocet has been exported to more than 30 countries. Nations such as India, China, Brazil, and South Africa have acquired the missile for their naval forces. Licensing agreements have also facilitated domestic production in some countries, allowing for local manufacturing of missile components and integration into existing naval platforms.

Controversies and Countermeasures

Export Restrictions

The sale of Exocet missiles has been subject to international arms control agreements. The European Union and the United Nations have imposed restrictions on certain variants, particularly those capable of engaging large naval vessels. These restrictions aim to prevent proliferation to states with questionable human rights records or unstable political conditions.

Countermeasure Development

In response to the threat posed by sea‑skimming missiles, navies worldwide have developed advanced radar warning receivers (RWR), electronic countermeasure suites, and hard‑kill defensive systems such as close‑in weapon systems (CIWS). The Exocet’s low-altitude flight profile challenges radar detection, prompting the adoption of low‑frequency active and passive sensors.

The use of Exocet missiles in conflicts involving civilian shipping or densely populated coastal areas has sparked legal discussions under international humanitarian law. The principle of distinction requires that attacks discriminate between military and civilian targets, a criterion that has been examined in the context of Exocet strikes on vessels within contested maritime zones.

Technical Specifications

  • Length – 6.5 meters (MM 38); 6.5 meters (MM 40)
  • Diameter – 0.51 meters
  • Weight – 1,400 kilograms (MM 38); 1,450 kilograms (MM 40)
  • Speed – 0.8 Mach (approximately 940 km/h)
  • Range – 70–80 kilometers
  • Warhead – 140 kg high‑explosive
  • Guidance – Inertial navigation, active radar seeker

Future Developments

Extended Range and Improved Seeker

Ongoing research focuses on extending the missile’s operational range beyond 100 kilometers through advancements in propulsion and fuel efficiency. Enhancements to the seeker include dual‑mode radar and imaging infrared to improve target recognition in cluttered maritime environments.

Modular Design and Multi‑Role Capability

Proposals have emerged to create a modular missile platform capable of carrying either a sea‑skimming anti‑ship warhead or a land‑attack payload. Such flexibility would allow navies to employ the missile across a broader spectrum of missions, from maritime interdiction to coastal bombardment.

Integration with Unmanned Platforms

The rise of unmanned surface and aerial vehicles has prompted interest in integrating Exocet missiles with autonomous launch platforms. Research into secure data links and autonomous targeting algorithms is underway to enable remote missile deployment from unmanned assets.

See Also

  • Anti‑ship missile
  • Sea‑skimming weapon
  • Naval warfare technology

References & Further Reading

References / Further Reading

  • French Ministry of Defence. Exocet Missile Development Report, 1975.
  • Naval Institute Proceedings. Sea‑Skimming Missile Technology and Countermeasures, 1988.
  • International Naval Research Organization. Comparative Analysis of Anti‑Ship Missiles, 1995.
  • United Nations Office for Disarmament Affairs. Export Controls on Naval Weapon Systems, 2002.
  • Defense Technical Information Center. Future Anti‑Ship Missile Development, 2015.
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