Wärtsilä DF engines for Shell LNG bunker vessel

09 Feb 2015
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The "pioneering" vessel will be powered by three 8-cylinder Wärtsilä 20DF dual-fuel engines capable of operating on either gas or diesel fuels

Wärtsilä is to supply DF dual-fuel engines for a specialised LNG bunker vessel being built by STX Offshore and Shipbuilding Company for Shell.

The vessel will be based at the Port of Rotterdam and used to deliver gas to LNG-fuelled vessels in Northwest Europe. It will be powered by three 8-cylinder Wärtsilä 20DF dual-fuel engines capable of operating on either gas or diesel fuels.

"This new specialised vessel is an important step towards LNG becoming the fuel of choice for shipping in Europe. LNG eases compliance with both the new and anticipated future IMO environmental regulations, and we are proud that our development of technologies throughout the gas chain is of increasing value to the marine sector," said Aaron Bresnahan, vice president, sales, Wärtsilä Ship Power.

Wärtsilä’s DF engines enable a vessel to operate on either natural gas, light fuel oil or heavy fuel oil, and can be switched between fuels during operation, without loss of speed or power.

The engines also provide ‘green’ propulsion. While operating in gas mode, the NOx emissions are said to be at least 85% below those specified in the current IMO regulations, and CO2 emissions are said to be some 25% less than those of a conventional marine engine running on diesel fuel. In addition, Wärtsilä says SOx and particle emissions are negligible at almost 0%.

Shell’s vessel will have a capacity to carry 6,500m³ of LNG and will be able to load from big or small terminals and to bunker a variety of vessels.

“This specialised LNG bunker vessel is a pioneering new design. We worked closely with our customers on the specifications of this exciting new bunker vessel and will use cutting-edge technology. Shell is proud to be leading in the development of LNG fuel in shipping,” added Dr Grahaeme Henderson, vice president, Shell Shipping and Maritime. 

Delivery is scheduled for spring 2016.

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