RedactedNarrative: On monday august 10, 2015, i was dispatched to the iron bridge boat ramp on the duck river, east of columbia, tn. I arrived on scene around 18:45. The accident based on witness accounts and 911 recordings, the accident happened around 17:45 that day.  
  
   I asked subject to have the boat remain on the water at the ramp until i got there. When i arrived i spoke with subject who stated driver of the vessel had been transported to maury regional. He stated individual was incoherent at the time he arrived and could not tell you his name or how old he was. The vessel was pulled up to the boatramp and still in the water. I could see damage to the port side of the vessel. 
  
  Myself and officer took witness statements from those who were around at the time of the accident and documented incident. Based on statements made by all parties, operator and subject1 were testing the boat out. 
  
  Subject1 was looking to buy boat from operator. They had got off work around 15:30 that afternoon. They went to operator''s residence where the boat was located, hooked the boat up and took to iron bridge boat ramp. They put the vessel on the water once they arrived and they took the boat up and down river around 1 mile. Subject1 stated they stopped and few times along the way and they were looking over the boat, asking questions, etc. Operator asked subject1 if he was ok with the boat and if he was ready to go. Operator took subject1 to the ramp and dropped him off to get the trailer backed in the water. At that time operator took the boat for "one last spin before he sold it", at which time operator stated he hit a submerged tree or object in the water. 
  
  At that time it is believed to have thrown operator down into to bottom of his boat. The kill switch on the throttle was not being worn by operator at the time of incident. The motor was still engaged in forward motion and at time of impact was knocked off course. This directional change caused operator''s boat to impact the western bank of the duck river a few hundred yards down river from the ramp. Once his boat hit the bank, the motor was still engaged and running in the forward position. The boat then struck a tree that was leaning out over the water on the port side of the vessel which caused the vessel to sustain major damage to the port side of his boat. The boat continued out into the river channel and began to go around in circles. At the time of impact another boater had just backed his boat into the water. Subject1 and the operator of that vessel then went out and aided operator in getting his boat back to the ramp. Operator was transported to maury regional shortly thereafter. Witness statements were taken and the boat was impounded at the yanahli shop in columbia for evidence. Boat was released back to operator on september 12, 2015 after i had spoke with district attorneys office about releasing vessel. During the course of the investigation on the afternoon/ night of august 10th, 2015, it was found that operator had been consuming alcohol that afternoon. Blood was taken from operator that night at 20:26. Blood was taken to tbi in nashville for alcohol  and blood screen testing (tbi lab case #151014996). Blood test on 8/26/2015 at tbi lab resulted in an ethyl alcohol amount of .147. Meeting with district attorney on 10/14/2015.