Wärtsilä has signed a contract with Containerships Ltd Oy covering the retrofitting of a Wärtsilä fresh water scrubber system on the 2002-built Containerships VII, which is equipped with a Wärtsilä W7L64 main engine. This is Wärtsilä’s first commercial marine scrubber project for a main engine, and the system is expected to be delivered to Containerships by August. The conversion will enable the vessel to meet future sulphur oxides (SOx) emission requirements in Sulphur Emission Control Areas.

The Wärtsilä scrubber works with fresh water in a closed-loop system in which sulphur oxides are neutralised with caustic soda. A small amount of scrubbing water is extracted to remove contaminants in a treatment unit onboard, thereby fulfilling all the quality and monitoring requirements stipulated by the IMO.

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