Cathodic protection is one of the most effective ways of reducing or eliminating the corrosion damage that inevitably affects metals (iron in particular) that are in permanent contact with sea water or other liquids. Polipodio's extensive range of high quality sacrificial zinc, aluminium, and magnesium anodes that are designed to offer a constant and measurable protection on all the submerged metal parts on every type of boat and small vessel. Our weld-on, bolt-on, and special shape anodes are used to protect the boat's hull and appendages (stabiliser fins, rudder, propeller, etc.), sea suctions, water tanks, coolers and engines both inboard and outboard. Certifications: UNI EN ISO 9001: 2000 & 14000:2004.