RedactedNarrative: On Friday May 25, 2018 at approximately 2326 hours a male was operating an airboat, that was traveling North on a trail off Lake Hatchineha. The operator was attempting to turn when he hit dry land or underwater obstruction. The sudden stop made one of the occupants fall off her seat and strike her head/eye on the mid section of the port side gunnel. The operator called 911 and transported the occupant to Camp Mack boat ramp where they were met by EMS and transported to Lakeland Regional Medical Center in Lakeland, Florida. The occupant was treated for a two inch laceration above her left eye and also had a fractured left orbital. I asked the operator if he had been drinking and he said, "Yes but early in the day during dinner." I asked the operator to perform horizontal gaze nystagmus (HGN) and I got several clues that he may be impaired. I requested the operator to perform Standard Field Sobriety Tasks (SFSTs). The operator completed the walk and turn and one-legged stand but I didn't get any clues. The operator was advised that alcohol may have contributed to the accident even though he was not arrested for BUI.Occupant sustained an Orbital Fracture to her left eye and a 2 inch laceration above her left eye.