Marimpress ICCP

Our ICCP system operates by continually measuring the potential of the submerged steel surface using hull-mounted zinc reference electrodes.

If the potential changes from the preset value (normally 220mV) the control panel releases a cc current to the titanium anodes. Marimpress uses titanium anodes as opposed to sacrificial zinc or aluminium anodes which last longer and cost less to replace. It also adjusts automatically to cope with external factors that affect the rate of corrosion such as:

• changes in temperature and salinity of seawater;
• ships velocity;
• condition of the paintwork.

How the system operates

Zinc reference cells continually monitor the potential of the hull and feed measurements back to the control panel which uses solid state technology to automatically calculate the correct compensating current to be output by the activated titanium anodes which are strategically positioned on the surface. 

If this potential starts to rise above the preset value (220 mV for steel hulls - at higher potentials corrosion will occur), the rectifier supplies the correct amount of cc current to the activated titanium anodes needed to maintain the preset value. In this way, not only the hull, but when earthed also the rudder, propeller, shaft and stabiliser fins are completely protected from corrosion.

The system consists of three parts:

• Control panel (located in the engine room);
• Titanium anodes (located strategically on the hull);
• Zinc reference cells (located on the hull).