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Wärtsilä Scrubber to Containerships Ltd Wärtsilä signed a turnkey contract with Containerships Ltd Oy for 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 commer- cial marine scrubber project for a main engine. The scrubber will be delivered to the customer in August 2011. The con- version will enable the vessel to meet fu- ture sulfur oxides (SOx) emission requirements in Sulphur Emission Con- trol Areas. Rolls-Royce Deal to Power 10 U.S. Navy LCS The Rolls-Royce MT30 Marine gas tur- bine on the test bed. Rolls-Royce won the contract to supply 36 MW gas turbines and waterjets for 10 of the U.S. Navy’s Littoral Combat Ships (LCS) – the Group’s largest ever marine naval surface ship contract. Each LCS will be equipped with two Rolls-Royce MT30 gas turbines powering four large waterjets, enabling the vessels to reach speeds in excess of 40 knots. The water- jets are among the largest produced by Rolls-Royce and can pump water at a combined rate of 25,000 gallons per sec- ond – enough to fill an Olympic style swimming pool in 25 seconds. Chemical Free Water Treatment The chemical free EnwaMatic Mar- itime technology by ENWA Water Treat- ment has obtained approval from engine manufacturer Wärtsilä. One of the criti- cal parameters for maritime engine effi- ciency and life time is internal corrosion. The instant water enters the cooling sys- tem, it causes corrosion, scaling, bacter- ial contamination and fouling. This has a significant impact on energy consump- tion, motor components and overall Life Cycle Cost (LCC). No more than 2 mm of rust can reduce heat transfer by 5% across component surfaces. Scale has an even more significant effect on the trans- fer efficiency with a small 0.5 mm layer generating as much as 4% loss. Enwa- Matic technology is based on filtering and treating the water with minerals bal- ancing, removing oxygen and neutraliz- ing the water. The unit is fully automatic while it protects the engine or the HVAC system internals. In connection with the intense testing period, the shipowner Color Line, operating several cruise fer- ries, has decided to change all closed loop water systems for engines and HVAC systems on their entire fleet. February 2011 www.marinelink.com 29 (Photo Cr edit: Rolls-Royce)
