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January 2013 www.sname.org/sname/mt with an individual capacity of 500 m 3 and a bunker- ing system). e LNG tanks are located on the deck of Bit Viking . e capacity of 500 m 3 results in 12 days of operation before refueling. In addition to the LNGPac system, Wärtsilä will provide gas-supply units and sin- gle-walled and double-walled gas piping; an exhaust system; a torque meter for engine power measurement; a gas-detection system; a reghting upgrade; and an electrical system. e conversion work was completed in the fall of 2011. e actual conversion of the two original engines to DF service was completed in just six weeks. e conversion work had a total cost of approxi- mately 60 million NOK (approximately $10 million U.S.). Some 75% of the cost was covered by the NO x fund (see sidebar). is contribution is the largest to date from the fund. Members of the fund pay 4 NOK (approximately 70 cents U.S.) per kilogram of NO x emitted and are exempted from the Norwegian tax of 16 NOK (approximately $2.80 U.S.) per kilogram of NOx emitted. NO x emissions from vessels that switch to using LNG as fuel are typically reduced by 85-90%. The ?nished ship After its conversion, Bit Viking has been back in ser- vice for Statoil, transporting rened products from Mongstad to destinations along the Norwegian coast. The company signed an agreement with Skangass for LNG bunkering at its Risavika LNG plant near Stavanger on the west coast of Norway, south of the Mongstad refinery. Bit Viking will take on the LNG fuel via the loading arms at the LNG plant. e LNG plant is strategically located adjacent to an existing port facility, enabling future ships to bunker with LNG with minimal interruption. While Bit Viking has an agree- ment to bunker at the Risavika facility, there are four Careful communication and coordination between all the actors in the value chain is required to move forward with LNG as fuel. A Samson ?oating crane places one of the two 500 m 3 LNG tanks on the deck of Bit Viking during the conversion process.