RedactedNarrative: Operator was the operator of the boat and Passenger was an occupant of the boat while Tuber was riding on an inflatable tube. While pulling Tuber there was slack in the towline. When the motorboat tightened the towline the resistance from Tuber in the tube caused the boat to jerk or stop suddenly. The jerk or stop caused Operator and Passenger to be ejected from the boat. 
  
  The boat with the throttle still open began operating in a circuitous manner with Tuber still in the tube. Tuber was scared that the boat would hit him and jumped out of the tube and into the water. Once in the water he announced he could not swim. Operator and Passenger attempted to assist Tuber, but were unable to assist him to shore. Tuber went below the water and did not resurface.