DUUX 5 Fenelon

The DUUX 5 is a hull-mounted, passive sonar and acoustic rangefinder designed for the French ballistic missile submarine L'INFLEXIBLE . The sonar was intended to replace the DUUX 2.

The DUUX 5 incorporates a passive rangefinder that can automatically track three targets simultaneously and a panoramic sonar interceptor that can find the bearing of the originator of sonar transmissions between 2 and 15 KHz. Thus, four targets can be tracked at once, three from radiated noise and one...