French military authorities have launched an investigation following the reported sighting of drones flying over the Île Longue naval base, home to the country’s nuclear submarine fleet. The incident, which occurred on Thursday evening, has raised concerns about security at one of France’s most sensitive military installations.
The naval base, situated in Brest Bay, is the cornerstone of France’s nuclear deterrent, housing the ballistic missile submarines that form a critical part of its defense strategy. According to the French Gendarmerie, at least five drones were observed flying over the restricted zone encompassing the nuclear submarine base.
In response to the drone activity, authorities activated counter-drone measures and initiated a search operation. Marine infantry units responsible for protecting the base deployed electronic jamming equipment targeting the drones, although no live ammunition was used.
The Maritime Prefecture for the Atlantic stated that while no direct threat to the base’s strategic infrastructure was identified, the sensitivity of the location necessitated an immediate response. The base is typically guarded by 120 members of the Maritime Gendarmerie in coordination with naval infantry personnel. They ensure the maintenance of France’s four ballistic missile submarines, with at least one submarine constantly at sea to guarantee nuclear deterrence.
This is not the first reported instance of drone activity in the vicinity of Île Longue. In November, a drone was reportedly sighted over the Crozon peninsula, where the base is located, though not specifically over the military site itself. The increased frequency of drone sightings near airports and other sensitive locations, including military sites across Northern Europe, has prompted heightened vigilance.
The investigation is ongoing to determine the origin and purpose of the drones. The incident highlights the growing challenge of securing critical infrastructure against emerging aerial threats.
