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Sacrificial anodes (zincs) protect a boat’s underwater metal parts from galvanic corrosion. In saltwater, electrical currents cause metal to corrode. Zincs corrode first, protecting expensive components like propellers and lower units from damage. New Zincs are replaced and fastened to the propeller shaft, propeller, rudder, or transom if applicable.
Sacrificial anodes (zincs) protect a boat’s underwater metal parts from galvanic corrosion. In saltwater, electrical currents cause metal to corrode. Zincs corrode first, protecting expensive components like propellers and lower units from damage. New Zincs are replaced and fastened to the propeller shaft, propeller, rudder, or transom if applicable.