Yep, none of the French designs (officially) exceed 25knots. That’s still quite an achievement with respect to le Triomphant, the much smaller SSN-685 only managed 23 IIRC.

Did some research into the French propulsion systems and have found out (with my limited French!) that SNA Barracuda will have a hybrid turbo-electric/geared turbine plant! The e-motor will be used for silent running at low speed, with the turbines being connected to the shaft via reduction gear for higher speeds.

Interestingly this is exactly the same arrangement used on Britain’s Valliant class almost 40 years ago (although the equipment raft will probably stay insulated at all speeds, I’d expect).

I also learned that le Triomphant apparently features a spherical bow sonar, few sources seem to mention this.