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New LNG bunker vessel for Shell to be powered by Wärtsilä dual-fuel engines
A specialized LNG bunker vessel to be built at the STX Offshore & Shipbuilding Company yard in South Korea on behalf of Shell will be powered by Wärtsilä DF dual-fuel engines. The ship will be used to deliver gas to LNG (Liquefied Natural Gas) fueled vessels in Northwest Europe. The newbuild contract is in direct response to the increasing acceptance by the shipping industry of LNG as a marine fuel. The engine order was placed with Wärtsilä in December 2014.
The new Shell vessel will be based at the port of Rotterdam in the Netherlands, and will load from the new break bulk terminal and jetty to be constructed by the Gas Access to Europe (Gate) terminal. It will also be sea-going and able, therefore, to bunker customers at other locations.
It will be powered by three 8-cylinder Wärtsilä 20DF dual-fuel engines capable of operating on either gas or diesel fuels. The engines are scheduled for delivery in spring 2016.
Wärtsilä has been at the forefront of the trend towards LNG fueled shipping. Its dual-fuel engine technology and gas supply and control systems have enabled the viability of the use of gas as a fuel for ships. The environmental and economic advantages that LNG has over conventional diesel fuels are seen as important to the future development of the global shipping industry.
Wärtsilä launched its dual-fuel technology in the early 1990s for use in land-based power plant applications. The first marine installation came a decade later. The technology enables the engine to be operated on either natural gas, light fuel oil (LFO), or heavy fuel oil (HFO), and switching between fuels can take place seamlessly during operation, without loss of power or speed. This ensures safety and continuous installation operability. Wärtsilä DF engines are designed to have the same output regardless of the fuel used.
When operating in gas mode, the nitrogen oxide (NOx) emissions are at least 85% below those specified in the current IMO regulations, and CO2 emissions are some 25% less than those of a conventional marine engine running on diesel fuel. Additionally, the sulphur oxide (SOx) and particle emissions are negligible at almost zero percent.
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Source: http://greenbigtruck.com/2015/02/new-lng-bunker-vessel-for-shell-to-be-powered-by-wartsila-dual-fuel-engines/
