The Huron Explorer, a 41-ft. former Coast Guard vessel now serving on the Great Lakes is the first modern U.S. research vessel to operate free of petroleum products. A National Oceanic and Atmospheric Administration (NOAA) small research vessel is now powered by soybeans. The Huron Explorer, a 41-ft. former Coast Guard vessel now serving on the Great Lakes, is the first U.S. research vessel to operate free of petroleum products. The vessel was given an award by the Department of Energy's Federal Energy Management Program during an Earth Day Week event on the shores of Lake Michigan. "NOAA has a commitment to stewardship of the environment, and this research vessel, the R/V Huron Explorer, demonstrates that commitment in very practical ways.