First LNG powered vessel with GL class

10 Sep 2010
The 25,000 dwt product tanker ‘Bit Viking’ will be converted to run on gas

The 25,000 dwt product tanker ‘Bit Viking’ will be converted to run on gas

The 25,000 dwt product tanker ‘Bit Viking’ will be converted to run on LNG and will be the first ship with Germanischer Lloyd (GL) class using gas as fuel.

The vessel will be retro-fitted with a dual fuel Wärtsilä engine and sea trials are planned for May 2011. With two 500m³ tanks, the vessel, owned by Tarbit Shipping and operated by Statoil along the Norwegian coastline, will have a range of 12 days. The conversion will enable the vessel to qualify for lower NOX emission taxes under the Norwegian government’s NOX fund scheme.

The Bit Viking has twin screw propulsion and is currently powered by two 6-cylinder in-line Wärtsilä 46 engine running on heavy fuel oil. The conversion involves changing these to 6-cylinder in-line Wärtsilä 50DF dual-fuel engines that will operate on LNG. The ship is built with double engine rooms, propellers, steering gears, rudders and control systems. “The use of LNG could reduce carbon emissions by 23%, with even bigger reductions of 80% in NOx and 92% in SOx emissions”, said Dr Pierre Sames, GL’s ssenior vice president strategic research and development

GL has issued guidelines for gas as ship fuel on the application of the IMO regulations which have been in force since 1 May 2010 and apply to all ships excluding liquefied gas tankers. The internal combustion engine installations subject to the IMO interim guidelines may be single-fuel (i.e. natural gas) or dual-fuel (gas and fuel oil) machines, and the natural gas may be stored in gaseous or liquid state.

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