For industries: Marine Offshore This section is only for development help

Cathelco box cooler solution

Cathelco have formed an alliance with Blokland Non-Ferro, Europe’s leading manufacturer of box cooler systems to develop a range of marine growth prevention systems which are specifically designed to provide the maximum level of effectiveness.

In operation, copper ions are delivered directly beneath the cooling tubes where they prevent mussel larvae from settling and growing. A steel cathode plate, running parallel to the anode, ensures an even distribution of current flow, producing a uniform wear pattern along the length of the anode.

This is an important advance on original box cooler installations where the anode was inserted through the seachest side plate. The new system means fewer seachest penetrations and less installation work, whilst ensuring effective and reliable protection against bio-fouling. One of the advantages of the collaboration with Blokland has been the design of special mounting arrangements which simplify the installation process.

Suspended anode arrangements

In the case of the suspended anode arrangement, the anti-fouling anode is attached to the base of the box cooler on a framework. This enables the box cooler and anti-fouling system to be fitted as a complete unit, resulting in faster, easier installation involving less time for the yard.

Bracket mounted systems

Alternatively, the anode can be mounted on the side of the seachest, directly below the cooling tubes. Anode replacement intervals can be designed to coincide with the vessel’s drydocking schedule or the service period of the box coolers up to a maximum duration of 5 years


  • Even distribution of copper ions along the length of the box cooler for greater effectiveness.
  • Cathode plate ensures a uniform wear pattern along the length of the anode.
  • Can be supplied as complete unit involving less installation work.
  • Systems designed around dry docking schedule or box cooler service intervals.
  • Cathelco can adapt anti-fouling systems to suit any size or shape of box cooler from any manufacturer