Cape Yakataga

Aircraft departed Merrill Field at 1110 with 220 gallons of fuel. Two hours later both engines quit while flying at an altitude of 6,500 feet approximately 10 miles offshore. The crew was unable to restart the engines and the aircraft was ditched into 12 to 15 foot waves with a 40 knot surface wind. The right float was torn off and both engine mounts broke. The aircraft sank at 1745 and was not recovered. The aircraft had an annual inspection 4 days prior to the accident. The fueling facilities were checked and found free of water or other contaminants.