Cathelco equipment for Poland
Cathelco is to supply equipment for five ice-classed containerships being built at Poland’s Remontowa Shipbuilding.
Cathelco will supply an impressed current cathodic protection (ICCP) system which will safeguard the vessels - which are being built for Greenland’s Royal Arctic Line (RAL) - against hull corrosion. The system has been designed to provide effective and reliable protection in Arctic waters, where lower levels of salinity have important implications.
“The sea water in the Arctic is naturally colder and has lower levels of salinity which means that it is more difficult to pass an electrical current through it,” said Stephen Ellis, project development manager at Cathelco.
“Because the sea water has a higher resistivity, the current requires a higher driving force and therefore we are supplying a 50 volt control panel, instead of the normal 24 volt which would be used in more temperate waters,” he added.
The colder waters also mean the ICCP system will use four elliptical anodes mounted in pairs, port and starboard at the aft of the vessel, as opposed to just one on either side of the ship, as would be sufficient in warmer waters with higher salinity.
Cathelco ICCP systems are also being supplied for two 100 teu containerships, also being built at Remontowa for RAL, and a further two 30 teu vessels which will replace the older tonnage.
Elsewhere, Remontowa is building an anchor handling tug/supply vessel (AHTS) for a Canadian owner, for which an ICCP system is also being supplied by Cathelco. For this project, Cathelco will also provide a seawater pipework antifouling system.
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