RedactedNarrative: Operator was driving his boat (VA 7000 CA) while towing Subject1 on a tube.  The victim was sitting on the front of the bass type motorboat.  When Operator turned left while pulling the tube he looked back to check on Subject1 on the tube.  He advised that at that time Victim must have fallen out of the boat on the bow starboard side.  Because the boat was turning left and Victim fell out of the starboard side, the propeller and lower unit struck Victim leaving multiple lacerations to his body.  Subject1 helped Victim on to the boat holding pressure to lacerations.  Operator transported the injured to the nearest location at 252 Sir Walter Dr. Bumpass, VA 23024.  Victim was transported via medivac to the UVA hospital in Charlottesville, VA.