RedactedNarrative: Owner of vessel was teaching operator of vessel how to operate the outboard motor. The motor started to stall, the operator accelerated and the vessel was heading toward a dock and pontoon. The owner began to move from the middle of the vessel to the rear to take control of the outboard motor at which time he lost his balance and fell out of the vessel and into the water. At that time the prop on the outboard motor struck the operator in the face and head area causing injury. The owner was able to get out of the vessel onto land and apply pressure to the wound. The owner stated that he had not consumed any alcohol or narcotics at the time of the incident.