RedactedNarrative: On 7/31/16 at approximately 1824 Dep.s were working as a 2 man marine team (marine 2), when we responded to the area in front of Casco bay for a boat crash. On scene we observed a white vessel and white and black vessel both waiving orange flags. 
  
  On scene I confirmed no one was injured and medical was not needed. I supplied both vessels with forms to fill complete.
  
  When talking to the operator of Vessel 2, he said he was traveling  north west approximately .5 miles north of Casco Bay at approximately 20 mph when vessel 1 approached from the rear. 
  
  Operator2 said he saw the vessel at the last minute and made an evasive right hand turn attempting to avoid a collision. Vessel 1 struck vessel 2 on the Port side. Vessel 2 had a large white transfer mark on the rear port corner indicating it was stuck from behind from vessel 1. Vessel 2 had approximately .75" gap approximately 6' long, behind the rub rail where the fiberglass hull and deck cap had separated. 
  
  When talking to the operator of vessel 1, he said he traveling in a straight line when vessel 2 turned into his path. When talking to Operator1 I noticed the odor of an alcoholic beverage coming from his person. Operator1 told me had consumed 2 beers earlier in the day, but said he was not intoxicated and agreed to perform SFST's. Operator1 boarded my boat and I checked his eyes for HGN. I only observed lack of smooth pursuit and determined it was not necessary to continue the SFST's.
  
  Vessel 1 had scratches in the gel coat starting approximately 4' from the bow and continuing to the stern. The scratches were approximately 12" below the rub rail. There were also several black marks further down on the hull of the vessel, but we not believe they were a result of the crash.
   
  Both vessels were still running and were driven by their respective owners to Blackwell Boat Launch where they were taken out of the water. The damage to both vessels were photographed, and later copied to a CD and booked into Evidence.
  
  While photographing the vessels Operator1, operator of vessel 1, stated "as the larger vessel he believed he had the right of way and the smaller vessel should have gotten out of his way". I asked if he had attended any boating safety classes and he replied "no".
  
  Based on the large white transfer mark to the rear corner of Vessel 2, Operator1 is in violation of I.C. 67-7025 Rule #8, to take action to avoid collision.