On August 10 1998, about 1410 eastern daylight time, a Cessna 188, N6300G, registered to Aircraft Parts and Avionics, ditched into the Atlantic Ocean, 26 miles southeast of Ft. Lauderdale, Florida, while on a Title 14 CFR Part 91 personal flight. Visual meteorological conditions prevailed and a VFR flight plan was filed. The airplane sank into the ocean, and the commercial-rated pilot reported no injuries. The flight had originated from Ft. Lauderdale Executive Airport, Florida, at approximately 1340 eastern daylight time. After thirty minutes of flying, the pilot noticed the oil pressure was zero. The pilot reported the problem to Miami radio and advised them he was returning to the airport. About five minutes later with reduced power, the engine stopped. The pilot advised Miami radio of his intention to make an emergency landing on the water close to a large ship. After landing, the plane floated for approximately thirty minutes and then sank. The pilot reported being in the water for fifteen minutes before being rescued by the U.S. Coast Guard. The airplane was not recovered