[Amizaur]

They were at least very good - french, german and swedish sonars (swedish radars foer long time equal to US and GB). Sonars in most cases better than russian, the Russians sometimes copied them if managed to get documentation. Currently the new most modern sonars produced by euro-consorties (joined british, german, french and italic partners) are probably on par or in some cases better than US systems (for example torpedo seekers for Black Shark, low frequency sonars for Type-212 and new euro-frigates that are said to have det range up to 10 times better than previous generations and already demostrated impressive detection and tracking ranges against quiet submarines... can't remeber details, maybe I'll find them later but I remember i was very impreessed... something like SURTASS pefrormance on small frigate and shallow water :-) or at least TB-29...