If you’re going gas, dedicated LNG spark-ignition engines are best, says Rolls-Royce. Want dual fuel? It’s best to add another engine. And rig it as a genset for an electric drive.
Rolls-Royce Marine sees a big future in liquefied natural gas for ships, starting with smaller craft like tugs and ferries.
“We believe that single fuel is the right way for short-sea shipping,” Rolls-Royce Marine general sales manager for engines Odd Magne Horgen said in Houston. He described his firm’s work with ferries and more recently tugboats (F&F, January 16) in Norway.
“Dual fuel engines are the choice, as we see it, when enough LNG cannot be carried to complete the voyage,” Horgen said. Other Rolls executives were on hand in Houston too, including merchant vessel systems marketing VP Geir Bjørkeli and North America marine sales VP Bruce Trent.
Rolls-Royce claims an inherent advantage over its competitors in that it designs fully integrated propulsion systems and even hulls, maximizing overall vessel efficiency while shifting to a fundamentally cleaner fuel.
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