RedactedNarrative: Occupants were using the Mercury 9.9 HP motor to move the boat at a slow speed while fishing. The victim was standing on the rear casting platform near the transom of the boat. 
  
  The boat hit an underwater object. After the boat hit the object, the victim fell overboard. The other passenger reported that the victim was motionless after falling into the water. He used a Type IV throwable and landed it near the victim. The victim was still motionless and began sinking. The passenger jumped into the water in an attempt to rescue the victim. He was later recovered from 7 feet of water by Sheriff's Deputies. Alcohol was not a factor. The victim was not wearing a life jacket. The victim drowned while possibly having a seizure.