Documented operation results from first LNG-Supply vessel VIKING ENERGY

By Peter Pospiech at November 29, 2012 06:49
Filed Under: Company News, drive systems

Because of the more and more stringent exhaust emission legislations, taking place in more and more countries of the world, LNG is on everyone’s lips. New propulsion technics for new shipbuilding include also gas engines and / or dual-fuel engines. But so far results of existing LNG-driven ships have not been announced. Read in the following the documented operation results of the world’s first gas driven supply vessel VIKING ENERGY.
Delivered in 2003, the VS 4403 PSV VIKING ENERGY, designed by Wärtsilä ship Design and built by Kleven Verft AS in Norway, was the world's first LNG-powered supply vessel as a response to industry demands for minimising harmful exhaust gas emissions. The vessel has a diesel-electric propulsion plant with four Wärtsilä 6L32DF dual-fuel engines.
The owner, Eidesvik Shipping AS, is a Norwegian consolidated group of companies managing a worldwide fleet of purpose-built vessels and providing services for, among other things, the offshore market. The vessel was delivered in April 2003, and was chartered to Statoil for delivering supplies to oil and gas platforms in the North Sea.The vessel has a gross tonnage of 5,073t and a net tonnage of 1,521t. Its deadweight is 2,886t at 5.9m draught.

VIKING ENERGY leaves Bergen port

The VIKING ENERGY features a diesel-electric propulsion plant with four 6-cylinder Wärtsilä in-lines of type 6L32DF dual-fuel engines, each with an output of 2.010 kW at 720 rpm, driving the main generating sets. The engines run on liquefied natural gas (LNG) to reduce NOx emissions, but can also run on diesel oil. Should the gas supply be interrupted, they can be switched over from gas to liquid fuel automatically while continuing to deliver full power.
After 9 years of reliable operation the shipping companies documented results are:
> VIKING ENERGY has proved its 100% reliability since 2003 and did not fail a single hour! 
> Recorded operational results show that about 97% of creating energy had been performed by LNG.
> Annual fuel consumption had been calculated with 2.880 to LNG and 200 to Diesel.
> Annual NOx-Emissions  have been 21 to, corresponding in a reduction of 155 to or 87,6%
> CO2-Emissionen could be reduced by 21 percent, respectively reduced per year by 2.230 to.
> At pure operation with diesel fuel the annual fuel consumption would have been 3.312 to. This corresponds to a reduction of diesel fuel by 94%

Image: PPM News Service


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