Wärtsilä has signed a turnkey contract with Containerships Ltd Oy. The agreement covers the retrofitting of a Wärtsilä fresh water scrubber for the vessel Containerships VII, which is equipped with a Wärtsilä W7L64 main engine. This is Wärtsilä's first commercial marine scrubber project for a main engine. The scrubber will be delivered to the customer in August 2011. The conversion will enable the vessel to meet future sulphur oxides (SOx) emission requirements in Sulphur Emission Control Areas.