Patent ID: 7064459

Claim:
A method for inhibiting corrosion of a component of a marine vessel when an electrical system of the marine vessel is connected in electrical communication with an electrical conductor which is external to said marine vessel, comprising the step of: providing a first circuit point which is connectable in electrical communication with a first point of said component; providing a second circuit point which is connectable in electrical communication with a second point which is connected in electrical communication with said electrical conductor; decreasing the voltage potential of said first point below the voltage potential of said second point by a preselected differential magnitude, said first and second circuit points being connectable to a ground wire of a three wire electrical power cable which is connected in electrical communication between a shore based source of electrical power and said electrical system of said marine vessel, said electrical system being connected in electrical communication with said component of said marine vessel, wherein the floor of the body of water in which the marine vessel is operated acts as an anode and said component acts as a cathode; ohmically connecting said first point to boat ground by said ground wire; ohmically connecting said second point to shore ground by said ground wire; ohmically connecting said component to said ground wire; impressing electronic current on said ground wire to induce electronic current flow in said ground wire in a direction of electron flow from shore ground to boat ground.