[Jimbuna]

There doesn't appear to be a lot of detailed information out there.

Thales Underwater Systems has been selected as prime contractor for the sonar suite. The submarine is fitted with bow sonar wide-aperture flank sonar and towed sonar arrays.
Thales Underwater Systems has placed a contract on the Centre for Submarine Technology, a division of the UK MoD QinetiQ organisation, to carry out a feasibility study on the deployment of reelable thin line towed sonar arrays for the Barracuda class.

The CS under development for Barracuda-type SSNs combines an advanced sonar system based on that developed for the Navy’s current-generation nuclear-powered ballistic missiles submarines (SSBNs), an optronic mast replacing the traditional optical periscopes, a weapons system with twice the capacity of that carried by Rubis-class SSNs and a combat management system (CMS) integrating the capabilities of all of the boat’s above-water and underwater surveillance sensors.

http://en.wikipedia.org/wiki/French_...lass_submarine

http://www.defenseindustrydaily.com/...a-class-02902/

http://en.wikipedia.org/wiki/French_...lass_submarine