Naval Systems

Horizon class / Forbin-class frigate

Also known as
  • Classe Horizon
  • Forbin class
  • Forbin-class frigate
  • Horizon class
  • Horizon-class frigate
  • Horizon-class destroyer

The Horizon class is a French-Italian air-defense frigate/destroyer family built by Naval Group and Fincantieri for the French and Italian navies. The four 153-meter ships center on PAAMS, Aster missiles, long-range surveillance radar, and fleet air-defense command-and-control, with Chevalier Paul directly documented in Libya's 2011 intervention and as a Charles de Gaulle carrier-group escort during anti-ISIS operations.

Horizon class / Forbin-class frigate, Air-defense frigate class, Naval Systems
Image source: Wikimedia Commons: French frigate chevalier Paul.jpg

Role in Conflicts

Profile / Specs

Profile

Origin
France / Italy
Type
Air-defense frigate class
Service note
2008-present
Produced
2000-2010
Number built
4 ships

Specifications

Length
153 m
Beam
20.3 m
Displacement
6,500 tonnes standard / 7,300 tonnes full load
Crew
210 (190 crew + 20 passengers)
Range
7,000 nautical miles at 18 knots
Speed
29 knots
Air-defense system
PAAMS with Aster 15 and Aster 30 missiles
Vertical launch system
Sylver vertical launchers; OCCAR describes PAAMS launchers as eight-ready-missile modules
Primary mission
Airspace control, air-defense command and control, and anti-air cover for carrier groups and convoys
Combat-system upgrade
2023 Horizon MLU focuses on anti-air warfare, electronic warfare, command and control, platform, and obsolescence work
Air-Defense Fit

The Horizon ships are built around fleet air defense rather than general-purpose patrol work. Naval Group describes them as front-line anti-air warfare ships for airspace control, air-defense command and control, and anti-air cover for carrier groups and convoys.

PAAMS and Aster

OCCAR describes PAAMS as a 360-degree naval air-defense system with long-range surveillance radar, multifunction fire-control radar, vertical launchers, and Aster 15 and Aster 30 missiles.

National ship labels

French sources use air-defense frigate terminology for Forbin and Chevalier Paul; Italian sources group Andrea Doria and Caio Duilio as Orizzonte-class guided-missile destroyers.

Mid-life upgrade

OCCAR says the MLU entered its operative phase in July 2023, with AAW and EW integration planned across Italian and French ships through about 2030.

Sources: Naviris moves forward on the mid-life upgrade of the horizon frigates; FSAF-PAAMS - The Next Generation of Surface-to-Air Anti-Missile Systems; HORIZON MLU Fact Sheet; Cacciatorpediniere lanciamissili Classe Orizzonte (DDGH).

Variants

The same four-ship Horizon programme is described differently by national services: France presents Forbin and Chevalier Paul as frégates de défense aérienne, while Italy presents Andrea Doria and Caio Duilio as Orizzonte-class guided-missile destroyers.

VariantConfigurationDesignation notes
Forbin (D620)French Navy Forbin-class FDA

The French Navy lists Forbin as a frigate de défense aérienne admitted to active service on 14 October 2010.

Sources: Frégates de défense aérienne - Ministère des Armées

Chevalier Paul (D621)French Navy Forbin-class FDA

The French Navy lists Chevalier Paul as the second French air-defense frigate, admitted to active service on 10 June 2011.

Sources: Frégates de défense aérienne - Ministère des Armées

Andrea Doria (D553)Italian Navy Orizzonte-class destroyer

OCCAR names Andrea Doria as one of the four Horizon-class vessels covered by the mid-life upgrade programme; Italian Navy terminology treats the national pair as Orizzonte-class guided-missile destroyers.

Sources: HORIZON MLU Fact Sheet, Cacciatorpediniere lanciamissili Classe Orizzonte (DDGH)

Caio Duilio (D554)Italian Navy Orizzonte-class destroyer

OCCAR names Caio Duilio as one of the four Horizon-class vessels covered by the mid-life upgrade programme; Italian Navy terminology treats the national pair as Orizzonte-class guided-missile destroyers.

Sources: HORIZON MLU Fact Sheet, Cacciatorpediniere lanciamissili Classe Orizzonte (DDGH)

Air-Defense Missile Fit

The Horizon class is a dedicated air-defense frigate family built around PAAMS and its Aster missile battery.

Carried itemItem typeCarriage evidence
Aster 30 / Sea Viper air-defense missile, Surface-to-air interceptor missile, Air DefenseAster 30 / Sea Viper air-defense missileLong-range interceptor

French defense sources identify PAAMS on Chevalier Paul as using Aster 15 and Aster 30 missiles; Aster 30 is the longer-range interceptor in the class's air-defense fit.

Sources: Frégates de défense aérienne - Ministère des Armées

Timeline

Horizon class / Forbin-class frigate Key Events

  1. Chevalier Paul enters French service

    The French Navy says Chevalier Paul was admitted to active service on 10 June 2011, marking the class's operational entry in French service.

    Sources: Frégates de défense aérienne - Ministère des Armées

  2. Chevalier Paul joins Libya operations

    Local reporting on the 2012 command handover says Chevalier Paul saw its first combat action off Libya during Operation Harmattan immediately after entering active service.

    Sources: Prise de commandement de la frégate de défense aérienne Chevalier Paul

  3. Carrier group deploys against ISIL

    U.S. Naval Forces Central Command reported Charles de Gaulle beginning Arabian Gulf missions against ISIL with Chevalier Paul escorting the carrier group.

    Sources: Charles de Gaulle conducts first Arabian Gulf missions against ISIL as CTF 50

  4. Mid-life upgrade agreement signed

    Naval Group said France and Italy signed a memorandum of understanding for the mid-life upgrade of the four Horizon frigates at the Paris Air Show.

    Sources: Naviris moves forward on the mid-life upgrade of the horizon frigates

  5. Horizon MLU enters operative phase

    OCCAR says the Horizon mid-life upgrade contract entered its operative phase on 28 July 2023, with AAW and EW systems at the center of the common upgrade work.

    Sources: HORIZON MLU Fact Sheet

  6. Chevalier Paul fires Aster 30

    The French Ministry of the Armed Forces reported that Chevalier Paul successfully fired an Aster 30 during operational training alongside Charles de Gaulle.

    Sources: Deux bâtiments du groupe aéronaval réalisent pour entraînement des tirs de missiles Aster

Media

Horizon class / Forbin-class frigate Videos

Horizon class / Forbin-class frigate Images

Horizon class / Forbin-class frigate, Air-defense frigate class, Naval Systems - view 1
Source: Wikimedia Commons: Horizon frigate.jpg
Horizon class / Forbin-class frigate, Air-defense frigate class, Naval Systems - view 2
Source: Wikimedia Commons: French Frigate Forbin participates in Formidable Shield 2021 - 6665647.jpg
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Sources

Naviris moves forward on the mid-life upgrade of the horizon frigatesPublisher: Naval Group | Note: Supports the class's joint French-Italian build context, dimensions, displacement, range, speed, crew, front-line air-defense role, and mid-life upgrade context. | Accessed: 2026-07-03Horizon-class frigate | WikipediaPublisher: Wikipedia | Note: Supports Horizon-class builder context, class background, and the shared technical data used for the class page. | Accessed: 2026-07-03Frégates de défense aérienne - Ministère des ArméesPublisher: Ministère des Armées | Note: Supports the French air-defense frigate designation, the PAAMS fit with Aster 15 and Aster 30, and Chevalier Paul's active-service date. | Accessed: 2026-07-03Charles de Gaulle conducts first Arabian Gulf missions against ISIL as CTF 50Publisher: U.S. Naval Forces Central Command | Note: Supports 2014 War Against the Islamic State direct conflict use under Operation Inherent Resolve: Directly supports 2014 Operation Inherent Resolve use by documenting Chevalier Paul escorting Charles de Gaulle as the carrier group supported Operation Inherent Resolve against ISIL. | Accessed: 2026-07-03Deux bâtiments du groupe aéronaval réalisent pour entraînement des tirs de missiles AsterPublisher: Ministère des Armées | Note: Supports Chevalier Paul's 2024 Aster 30 training fire and the class's layered Aster missile fit. | Accessed: 2026-07-03FRMARFOR – Le major Stéphane quitte la Marine après 33 ans d’expertise météo au profit des opérationsPublisher: Ministère des Armées | Note: Directly supports 2011 First Libyan Civil War use by noting service aboard Chevalier Paul and engagement in Operation Harmattan in 2011. | Accessed: 2026-07-03Arrêté du 11 juin 2024 HarmattanPublisher: Ministère des Armées / Bulletin officiel des armées | Note: Directly supports 2011 First Libyan Civil War use by listing Chevalier Paul among French Navy combatant units for Operation Harmattan over Libya. | Accessed: 2026-07-03Prise de commandement de la frégate de défense aérienne Chevalier PaulPublisher: Info83 | Note: Directly supports 2011 First Libyan Civil War use by describing Chevalier Paul's Operation Harmattan roles off Libya: carrier and amphibious-force air defense, detection coverage, and artillery against pro-Gaddafi military objectives. | Accessed: 2026-07-03HORIZON MLU Fact SheetPublisher: OCCAR | Note: Supports the four named Horizon vessels, the 2023 MLU operative phase, the focus on AAW and EW systems, national-variant caveat, and planned Italian/French integration schedule through about 2030. | Accessed: 2026-07-03FSAF-PAAMS - The Next Generation of Surface-to-Air Anti-Missile SystemsPublisher: OCCAR | Note: Supports PAAMS as the Horizon/Type 45 naval air-defense system, the Aster 15/Aster 30 distinction, Sylver launcher context, and PAAMS radar/launcher/mission architecture. | Accessed: 2026-07-03Cacciatorpediniere lanciamissili Classe Orizzonte (DDGH)Publisher: Marina Militare | Note: Supports Italian Orizzonte/DDGH terminology and Italian national fit context for the Andrea Doria and Caio Duilio branch of the Horizon programme. | Accessed: 2026-07-03Wikimedia Commons: Horizon frigate.jpgPublisher: Wikimedia Commons | Note: Supports the primary image provenance and open-license context for the Horizon-class model image. | Accessed: 2026-07-03Wikimedia Commons: French frigate chevalier Paul.jpgPublisher: Wikimedia Commons | Note: Supports gallery image provenance and CC BY 3.0 licensing context for a Chevalier Paul port photo. | Accessed: 2026-07-03Wikimedia Commons: French Frigate Forbin participates in Formidable Shield 2021 - 6665647.jpgPublisher: Wikimedia Commons | Note: Supports gallery image provenance and public-domain licensing context for the Forbin exercise image. | Accessed: 2026-07-03