Patent ID: 6579429
Filing Date: 2003-06-17
Classification: B63B,C23F,F28F

Abstract:
An antifouling system for protecting a structure exposed to seawater from fouling, said system comprising:an anode-forming member arranged on a surface of a member, which is to be protected from fouling, of the structure via an insulating member; an electrical catalyst of an electrochemically active, stable material coating the anode-forming member; a dc power unit having: a positive electrode connected to the anode-forming member or the electrical catalyst; a negative electrode connected to a metallic member forming at least part of the structure and wetted with seawater; and an automatic potential controller that adjusts potential difference between the positive and the negative electrode such that oxygen is generated while generation of chlorine in seawater is suppressed; and a cathodic protection current supply system that supplies a cathodic protection current to the metallic member wetted with seawater and forming at least part of the structure.