Tested the Amethyste & Rubis class for several occasions, A&R's sensor and stealth are fine, but the F17 mod2 torpedo isn't a real threat.
I don't know for sure, but it's said that Blackshark torpedo now enlist in French navy(Italy navy also),
post#226. If our french friends can confirm that, Blackshark would be a good enhancement in the Mod
In DWX1.0, I've built Blackshark torpedo(according to the internet found data) into Type 212, it is powerful, no doubt
Black-shark info:
http://www.wass.it/WASSWEB/brochure/black_shark.pdf