The U.S. Coast Guard Cutter Henry Blake refueled recently, using a 50/50 blend of petroleum F-76 and hydroprocessed renewable diesel derived from algal oil, in Everett, Wash., becoming the first Coast Guard cutter to use as the renewable diesel as part of an operational evaluation. Successful evaluation of this fuel mixture, known as 50/50 F76/HRD76, can help guide the development of alternative fuels in America, reducing the nation’s dependence on foreign oil. Developed through a partnership with the U.S. Navy, the Coast Guard Office of Energy Management was provided with 50/50 F76/HRD76 to examine the “drop in” operational feasibility of the renewable diesel in Coast Guard cutters.