Patent ID: 8226812

Claim:
A method in a corrosion protection system for protecting a first and a second metal part of a marine construction, the method comprising controlling a first electrical current through a first electrical circuit, comprising a first anode, the first metal part and an electrolyte, at least partly based on a measured first electrical potential of the first metal part with at least one of the at least one reference electrode (R, RI) as a ground reference; controlling a second electrical current through a second electrical circuit, comprising a second anode, the second metal part and the electrolyte, at least partly based on a measured second electrical potential of the second metal part with at least one of the at least one reference electrode as a ground reference, and repetitively performing the steps of controlling the first and second electrical currents so as to be reduced or eliminated, measuring at least one of the first and second electrical potentials while the electrical currents are maintained reduced or eliminated, and, after measuring at least one of the first and second electrical potentials, controlling the first and second electrical currents so as to be increased or reestablished.