Self-polishing antifouling product, based on copper and on organic substances with synergetic action. Especially suitable for boat hulls that are sailing at moderate speed (< 25 knots) and are used very often. The technology used (CDP eroding) avoids fouling heap over time. The controlled release of active components achieves a perfect antifouling function that is renewed by the friction of water on the hull. It is not compatible with aluminium hulls.