Kimon-Class Frigates: Powering Greece’s Naval Renaissance with FDI HN Technology
By D-Mitch | Defence Correspondent
In a pivotal moment for regional maritime security, Greece embarked on its most ambitious naval procurement in decades. On March 24, 2022, a landmark agreement was signed with French defense giants Naval Group, MBDA, and Thales for the acquisition of three Defence and Intervention Frigates (FDI) in Hellenic Navy (FDI HN) configuration, with an option for a fourth. This transformative program is designed to catapult the Hellenic Navy into a new era of capability, with the first frigate, Kimon, officially commissioned on December 18, 2025, and arriving at Salamis Naval Base on January 15, 2026.
A New Era for the Hellenic Navy’s Surface Combatants
The FDI HN program is far more than a simple fleet replacement; it signifies a structural modernization of Greece’s surface combatant force. These state-of-the-art frigates will progressively replace the aging Elli-class vessels, which have served for over four decades, and address a critical gap in high-end air-defense and network-centric warfare capabilities. Since the decommissioning of the last U.S. Navy C.F. Adams-class destroyers in 2004, the Hellenic Navy has lacked a true area air-defense platform. The Kimon-class aims to rectify this, introducing advanced radar systems capable of fully exploiting missiles like ESSM, ensuring comprehensive fleet protection in contested environments.
Advanced Digital Architecture: The Heart of the FDI HN
At approximately 4,600 tons in Greek configuration, the FDI HN is a compact yet exceptionally potent multi-purpose frigate. Its most transformative feature is its fully digital onboard architecture, built around redundant data centers and a virtualized software environment. This design delivers intrinsic cyber resilience and enables continuous, incremental capability upgrades throughout the ship’s operational life. Unlike traditional, costly mid-life modernizations, the FDI HN can adapt swiftly to technological advancements and evolving threats, including sophisticated submarines, multi-domain asymmetric attacks, and advanced missile technologies.
Strategic Expansion and Enhanced Capabilities
The initial 3+1 contract saw Greece formally exercising the option for a fourth frigate on November 14, 2025. These four 122-meter multi-mission frigates form the Kimon-class, named after revered Greek admirals: Kimon, Nearchos, Formion, and Themistocles. The expansion and subsequent upgrades—influenced by lessons from conflicts in Ukraine and Israel, and Greece’s participation in EUNAVFOR Operation ASPIDES—underscore a commitment to enhancing survivability against unmanned systems, loitering munitions, and saturation missile attacks.
Potent Armament and Future-Proofing Roadmap
The original contract included a formidable weapons package: ASTER 30 Block 1 SAM for long-range air defense, EXOCET MM40 Block 3C surface-to-surface missiles, MU90 torpedoes, and CANTO anti-torpedo decoys. While an initial missile package for the first three frigates was provided, supplementary orders are anticipated to ensure full operational sustainability for all four vessels and adequate wartime depth. The Kimon-class frigates will undergo a phased capability evolution through 2030, progressing from Standard 1 to Standard 2, Standard 2+, and ultimately Standard 2++. This roadmap includes features like SYLENA Mk1 AAW decoy launchers, a 21-tube Rolling Airframe Missile (RAM) Close-In Weapon System (CIWS), naval laser warning systems, CAMCOPTER S-100 unmanned aerial systems, and an OTO 76/62SR main gun. Looking further ahead, Greece is exploring the integration of cruise missiles on the final three ships and advanced counter-UAS systems like HAI’s CENTAUR, reinforcing their combat effectiveness.
Greece’s Enduring Maritime Future
With the Kimon-class frigates, Greece is re-establishing itself as a credible high-end maritime power. This initiative restores layered air defense, introduces advanced digital combat systems, strengthens anti-submarine warfare capabilities, and lays the groundwork for future strike integration. The FDI HN program is a structural transformation, positioning the Hellenic Navy as a modern, network-centric force capable of independently operating or contributing to allied task groups across the Eastern Mediterranean and beyond, safeguarding regional stability and security for decades to come.
