I used to sell GibSeas (made by Dufour) when I was a yacht broker a few
years ago. I would rate the Gibsea as roughly equivalent to a Beneteau and a
bit below the Jeaneau. Their B rating is the European offshore
classification system and indicates that it has less stability (ballast to
displacement ratio mostly) and maybe a bit lighter built than an A rating.
For inshore sailing it is plenty strong enough.

David