Many of the big Great Lakes ore carriers are undergoing repowering just now. Their V-16 Pielstick motors, in service since the early 80s, are reaching the end of their lives.
Their solution is more of the same; a pair of light distillate burners.
Shell is hoping some go LNG.
In the Great Lakes Corridor, Shell plans to install a small-scale liquefaction unit (0.25 million tons per annum) at its Shell Sarnia Manufacturing Centre in Sarnia, Ontario, Canada. Once operational, this project will supply LNG fuel to all five Great Lakes, their bordering U.S. states and Canadian provinces and the St. Lawrence Seaway. The Interlake Steamship Company is expected to be the first marine customer in this region, as it begins the conversion of its vessels.