By impressing DC current through the antifouling anodes, dissolved ions will flow through the cooling system preventing biological marine fouling.


An electrolytic antifouling system dissolves both copper and alternatively aluminium or iron based anodes in the seawater system. The anode dissolution prevents settlement of organisms and the development of fouling causing blockages, reduced flow rates and accelerated corrosion.

By use of an electrolytic antifouling system the area close to the anodes will also be cathodically protected. Hence, the need for sacrificial anodes in sea chests may be reduced or eliminated.

System components

  • Control unit: Power supply for feeding DC current to the anodes.
  • Anodes: Copper, aluminium or iron rods releasing ions to be carried by the seawater.


Without electrolytic antifouling the marine growth enters the seawater system and finds a spot where temperature, nutrients, pH factor and other environmental conditions are right for settling and breeding.

Blocked pipes can lead to dangerous situations with fire-fighting equipment, overheating and loss of vessel speed. Cleaning, or in many cases replacement of complete pipe sections, can be a time consuming and expensive problem.