RedactedNarrative: The operator of V1 had anchored his vessel in either sidewinder or Canyon Point Cove for the afternoon. Occupants on board the vessel and witnesses on scene stated the operator was drinking alcohol throughout the afternoon. At approximately 1620 hours, the operator pulled anchor and headed out to go to Callville Bay. For reasons unknown, the operator instead headed towards the Virgin Basin instead of Callville Bay. The operator stated that the vessel was in "auto-pilot" mode. The vessel struck a vertical canyon wall in the "narrows" portion of Lake Mead, approximately 100 yards East of navigation marker 18 on the Arizona side of Lake Mead.
  
  As a result of the collision, all six occupants were thrown forward, striking the interior of the vessel. Two of the patients were critically injured, two others received minor injuries. The operator of the vessel then began returning to Callville Bay. Witnesses called for help on Marine Band 16. National Park Service Personnel met with the vessel near Bearing Point on the Nevada side of the Lake. 
  
  The operator of the vessel was arrested for suspicion of operating under the influence of alcohol. He refused to submit to chemical testing and was charged for that as well.
NameOfBodyOfWater: LAKE MEAD-BOULDER BASIN
NearestCityTown: Boulder City, NV