according to witnesses statements, operator was test running his boat at Leeds Ave. Boat Landing going out and back in a circular track. While making a sharp turn operator was thrown out of the boat and into the Ashley River where he was seen treading water while the boat circled around him. A few moments later the motor shut off and the boat came to a rest and operator was no longer seen in the Ashley. Divers recovered body; that had a fatal prop laceration to his head.