Wärtsilä engines for DSME gas carriers
Wärtsilä has received an order for 30 dual-fuel engines for five new design Arc 7 ice-class LNG carriers being built by Daewoo Shipbuilding and Marine Engineering (DSME) to serve the Yamal LNG project.
Each of the latest carriers will be fitted with four 12-cylinder Wärtsilä 50DF engines and two 9-cylinder Wärtsilä 50DF engines. The engines will mainly use LNG, but can also run on conventional marine diesel fuels. The vessels’ capabilities, breaking through ice of up to 2m thick, require dramatic and rapid variations in engine loads.
The Russian Yamal LNG project is expected to produce 16.5 million tons of LNG a year - for shipment to European, Asian and South American customers – by the end of 2017.
When operating in gas mode, NOx emissions from Wärtsilä 50DF engines are said to be at least 85% below current IMO requirements. Emissions of CO2 are claimed to be some 25% less than those of a conventional marine engine running on diesel fuel, with close to no SOx and particulate matter emissions.
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