RedactedNarrative: Sailboat under sail came aground on beach. Witness approached vessel and observed pfd floating in surf behind vessel and called 911. Owner/operator was pulled to shore deceased. He was wearing self inflate PFD (sailing type with D-rings) and guy-wires on vessel. It is most likely that he lost his balance while moving forward on the narrow gunwale of the vessel. He fell from the starboard side just forward of the cockpit and was suspended in the vessel wake and ocean waves by an attached lifeline. He was unable to self-rescue. He was then pulled along by the vessel for at least 8/10 of a mile (likely more) until the vessel made landfall on the beach.