RedactedNarrative: On 4/15/2017 at approximately 1500hrs/ 3:00 PM.  Operator of the vessel was traveling downstream of the Natalbany River.  He was pulling his 16 yr old daughter (Juvenile) and her boyfriend,17 yr old, (Juvenile) on a tube. 
  
  Operator had one observer in the vessel that was his other daughter. Operator advised that he was traveling at 28 mph and was entering a s type curve (exact location unknown at this time). As he was coming into the turn he could not see what was approaching due to the woods on the starboard side bank so he slowed slightly, as he rounds the curve he immediately sees a center console bay boat with one person in it coming directly at him.  
  
  He advised he could not go further right because of fear of slinging the occupants on the tube into the oncoming vessel or risking his vessel striking the oncoming vessel.  He further advised that he could not maneuver to his port side very much due to the risk of slinging the occupants on the tube into the woods so he did all he could think to do which was slow the vessel and tube as quickly as possible so he did this by yanking the kill lanyard he was wearing which shut the engine down immediately.  
  
  The momentum of the tube continued to maneuver to the port side bank. Boyfriend seen they were fixing to impact the bank so he jumped off grabbing his girlfriends legs, Daughter as he slid off but she would not release the grip she had on the tube. Daughter then rode the tube until it went under a cypress tree striking her head on what is believed to have been the cypress knees of the large tree. 
  
  No impact on the tree could be located. Operator immediately and picked both the occupants of that tube up and tended to his daughter’s injuries. Boyfriend advised he was not injured and later declined any treatment. Daughter had blood coming from her nose and ears, Operator stabilized her head and neck, called 911 and transported her to Tickfaw Marina in Killian, LA where emergency personnel were waiting to transfer her. She was conscious but could not remember certain things.  She was then air lifted to the North Oak Hospital in Hammond, La as of 4/16/2017 at 2:30 pm.  Her condition is reported stable and believed to recover fully with no permanent brain injuries. Daughter also suffered several bruises and lacerations in numerous locations on her body but nothing severe. 
  
  Sgt. performed HGN on operator and observed no indications of impairment either by drugs or alcohol. Note: the tube and rope that was involved in the incident was photographed and data plate information on the tube was checked and found that the operator of the vessel and the occupants of the tube were following the manufacturers requirements for use of the tube.
  