Long lasting and high quality hydrophilic matrix antifouling for boats with speeds up to 30 knots. By virtue of the high content of copper salts with suitable synergists, and the particular formulation of the vehicle, it guarantees excellent antifouling power in the most diverse operating conditions. Being its vehicle of hydrophilic nature, therefore “close” to the water, it increases the wettability and smoothness of the hull in the water. It is also effective in warm seas and mixed waters. Having a “controlled” release speed of antifouling salts, it can be used both on medium speed hulls and on sailboats. Not suitable for application on aluminum hulls. The application of at least 2 coats is required.