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Marine engines and generating sets - Wärtsilä
Marine diesel engines - Wärtsilä
Wärtsilä-Sulzer RTA96-C - Wikipedia
Wärtsilä 31 - the most efficient 4-stroke marine engine
Wärtsilä - Wikipedia
Meet Wärtsilä 31 – The World’s Most Efficient Engine
Which is the Most Efficient Ship Engine in the World? - Marine Insight