RedactedNarrative: V2 was headed up river on the Colorado River near the Laughlin River Lodge Casino at a rate of less than 5 miles per hour. V1 was headed downriver on the Colorado River on plane at approximately 25 miles per hour. V2 was occupied by Captain and he recognized that V1 was headed towards V2, but did not take evasive action. V1 was occupied by 6 other persons. Operator1 did not realize that V2 was in the travel path of V1 until V1 was in the immediate vicinity of V2. 
  
       When a collision was imminent Captain2 placed V2 in reverse while sounding the horn, attempting to alert Operator1 and avoid the collision. Operator1 placed V1 in to a hard left hand turn in an attempt to avoid the collision. 
  
       The collision occurred and the starboard underside of V1 struck the bow of V2 causing substantial damage to V1. V1 began to sink and Operator1 attempted to operate it back to Fisherman''s Access Launch Ramp in an attempt to remove V1 from the water. V1''s engines stalled while underway, but Operator1 was still able to operate V1 in to the shoreline between the Aquarius Casino and Riverside Resort. 
  
       V2 returned to the dock at the Laughlin River Lodge as Captain2 had fallen during impact and received a laceration to his right forearm. Captain2 received first aid for this injury.