Antifouling coating (antifouling) and their use and method for protecting surfaces from biofouling (fouling)

antifouling coating for substrate surfaces which come into contact with liquids comprising: at least two layers of electrically conductive varnish, which are segmented into at least two regions electrically isolated from each other, which can be electrically connected by pairs facing each other as a cathode and anode, wherein a first layer of electrically conductive coating has a specific electrical conductivity of at least 10 Scm-1 and a second layer of varnisha specific electric conductivity lower than that of the first varnishlayer by a factor of 10 to 1000 000, wherein the materials of the layers of electrically conductive coating, of which at least two, have a dynamic viscosity in the range of 1 mPas to 107 mPas at temperatures of at most 50 ° C, the materials of being selected varnishlayers from the group consisting of polyurethanes, polyurea, polysiloxane, sol-gel coatings, epoxies , Phenolic resins, rubber, polyolefins, and copolymers, blends, alloys, mixtures and compounds thereof systems.