System Design

Impressed current cathodic protection (ICCP) systems operate by 'neutralising' the electro-chemical activity which takes place on a ship's hull when it is submerged in seawater.

This is achieved by applying a more powerful external current which eliminates the formation of corrosion cells on the surface of plates and avoids the problems which can exist where dissimilar metals are introduced through welding or brought into proximity by other components such as propellers.

The essential feature of ICCP systems is that the output of the current to the anodes is monitored and controlled to provide the optimum level of protection in relation to factors such as the ship's speed, coating damage and salinity.