Sacrificial Anodes for Marine Cathodic Protection MGDUFF has been at the forefront of marine cathodic protection, including sacrificial anodes, since the early 1950’s. MGDUFF continues to be one of the largest suppliers of systems and services to the marine market in the UK and throughout the world. The company's involvement in corrosion control spans all aspects of the marine sector from the leisure boat market to commercial deep sea shipping and coastal and shoreline structures such as piling, jetties, lock and dock gates, linkspans and pontoon systems. MGDUFF has an experienced technical department and offers full design services and technical support as well as providing the most comprehensive range of sacrificial anodes and impressed current cathodic protection systems.