PARIS, — France's Naval Group has presented an expanded version of its Defence and Intervention Frigate (FDI), known as the FDI XL, at Euronaval 2026 in Paris. The concept features a longer hull, increased weapons capacity and modular launching systems for deploying loitering munitions and unmanned aerial systems.
The FDI XL adds an approximately 10-metre midships section, increasing displacement from 4,500 tonnes to around 5,300 tonnes. Despite the additional length and weight, the frigate is designed to retain the baseline FDI's top speed.
The extended hull provides additional space for weapons and mission systems. One proposed configuration includes 16 Exocet MM40 Block 3C anti-ship missiles and additional vertical launch cells. The design also supports new-generation SYLVER launchers and the Rampart multipurpose launching system.
Modular Loitering Munition Launch System
A key feature of the FDI XL presentation is its modular loitering-munition launching system. Naval Group's exhibition video shows two large container-like launcher modules installed on the frigate's deck. The footage also shows an unmanned aerial weapon being launched from the system.
The modular arrangement is intended to increase the frigate's ability to deploy loitering munitions, interceptor drones and other unmanned weapons. The proposed 336-cell configuration would provide substantial launch capacity if confirmed by Naval Group.
These drone-launching modules are separate from the frigate's conventional missile vertical launch system, allowing the ship to combine traditional naval weapons with unmanned strike capabilities.
Advanced Sensors and Unmanned Systems
The FDI XL retains the baseline frigate's inverted bow and Thales Sea Fire fixed-panel AESA radar. It combines anti-air, anti-submarine and anti-surface warfare capabilities while addressing asymmetric threats.
Naval Group is emphasising an open-architecture design that allows navies to integrate future weapons and technologies. The frigate can operate with unmanned surface vehicles (USVs), aerial drones and mission-specific containers carrying loitering munitions, interceptor drones and other systems.
The standard FDI is a 122-metre, 4,500-tonne frigate already in serial production for France, Greece and Sweden. Its modular architecture allows different configurations according to individual navy requirements. The platform also uses technologies already in French Navy service and is interoperable with NATO forces.
The FDI XL is presented as an evolutionary option within the existing FDI family. Naval Group's focus at Euronaval 2026 is on adaptable warships designed for high-intensity and hybrid naval operations, combining conventional weapons with modular drone-launching systems and future autonomous technologies.
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