RedactedNarrative: On 07/04/15 at approximately 2154 hours, Dep. and I responded to the above listed location for a reported unknown injury boat crash. While en route, I was updated the crash involved one pontoon and one ski boat, with one person possibly being in the water. I arrived to find several boats. I located the pontoon boat with Operator and his wife on board. 
   
  Operator2 advised everyone was accounted for and no one was in the water. Operator2 said there were five other people on board, a husband and wife had already left with their child. Two other occupants were on another boat heading to 3rd Docks to meet medical personnel. I was later informed through dispatch the boat with the injured occupants were en route back to our location. I was informed one person had a possible dislocated shoulder. 
   
  Operator2 showed me the second boat involved in the crash. I observed a Supra boat with one occupant on board. I observed damage to the stern/port side of the pontoon boat. There was also damage to outboard motor and canopy. The pontoon boat had lost steering and was not able to move under its own power. I noticed the pontoon's navigation lights were working. I observed damage bow/port side of the Supra boat. The Supra's stern light was working, but the port/starboard lights were not. Both boat's were not taking on water. I photographed both boats. 
   
  Throughout my conversation with Operator2, I learned the following: Operator2 knew the operator of the other vessel. According to Operator2, Operator1 had shown up at his property at approximately 1930 hours to use a bathroom. While there, Operator2 was told by Operator1 he had consumed 12 shots of an alcoholic beverages while in Harrison, ID. Operator2 offered to have Operator1 stay at his property, to which Operator1 refused. Operator1 stated he was heading to Cave Bay. Operator2 was out on his boat with other people on board waiting for the Harrison Firework show to start. Operator2 looked back and observed a boat heading in his general direction. His pontoon boats bow was facing Harrison. He looked away for a few seconds then heard his daughter and her friend start yelling "stop." Operator2 looked back and noticed the boat about to run into them. Operator2 put the throttle in forward, but because the motor was turned starboard, it caused the boat to turn. The Supra struck the pontoon boat on the stern/port side and "ramped" up into the pontoon boat. The Supra then slide off and both boats remained afloat. 
   
  The next morning, Operator2 was seen by a doctor for his injuries from the crash. Operator2 did not know about his injuries while on scene, because he saw his daughter on the floor and believed to be seriously injured or dead after the boat struck. Operator2 advised the Supra's bow had hit him in the head and he sustained the above listed injuries. Operator2 said he would photograph his and V2 passenger1's injuries and email me the photographs along with photographs of the pontoon boat, out of the water. Operator2 believed the pontoon boat was a total lost. 
   
  I contacted Operator1 and confirmed he was not injured. I spoke with Operator1 and learned the following: Operator1 was en route to Cave Bay. Operator1 estimated his speed at approximately 15 to 20MPH's at the time of crash. Operator1 did not see the pontoon boat until he stuck it. Operator1 confirmed he knew Operator2. While speaking with Operator1, I noticed his eyes were glassy/blood shot and he confirmed he consumed alcoholic beverages prior to operating. Please refer to Dep. Report for further information regarding the OUI investigation. The pontoon boat with the injured people returned to the scene. 
   
  I contacted V2 passenger1 and learned the following: V2 passenger1 was sitting at the stern/port side of the vessel with V2 passenger2. V2 passenger1 looked back to see the Supra heading in their direction. V2 passenger1 yelled then grabbed V2 passenger2 and pulled each other to the floor. The Supra ramped up the