Wärtsilä execs describe future of marine propulsion
In an exclusive interview with Professional Mariner, two top officials of the Finnish engine maker Wärtsilä discuss the forces that are shaping the design of marine propulsion engines. Wärtsilä CEO Bjorn Rosengren and John Hatley, the company's American vice president ship power, describe how environmental regulations are playing a central role in engine design. One of the key trends is the development of engines that can burn natural gas as well as marine diesel fuel. Natural gas is both clean burning and increasingly abundant, they say, as a result of exploitation of huge reserves of shale gas in the United States.