Marine Hull isolation transformers are the only way to completely eliminate the risk of galvanic corrosion between the ships hull and other metal objects (other ships, pilings etc.). The problem is caused by an earth loop forming and current flowing through the earth wire on the shore supply. The problems occurs in all boats, although steel & aluminium boats are particularly susceptible. It is important to get advice from a suitably qualified marine surveyor or corrosion specialist before installing shorepower. | 
