Used as a primer on bare areas of the lead keel. It's not yet possible to assess its functionality, but the finish is very good. As long as you consider that the primer sets as quickly as the matching antifouling, you get a top-quality surface for further processing. 1 point deduction: SVB is, as is often the case, significantly more expensive than, for example, a hardware store - unfortunately, I noticed it too late. (- In my experience, the high prices at SVB are no longer justified by the once very competent advice.)