Yep, the radar was working when I tested it. I did get in touch with them and they are indeed getting strong support from tide currents (they said up to 9 kts).
Yeah, the skipper is a French pro who's been sailing the area for a long time: https://www.class40.com/fr/skippers/...carpentier.htm
And it's in the family as his dad had (still going) a long career in sailing as well: https://www.class40.com/fr/skippers/...carpentier.htm