RedactedNarrative: I, Game Warden was on patrol at Lake Mead on March 3rd, 2018 at approximately 1120 hours. National Park Service dispatched a call for a vessel on the rocks in Black Canyon by Hoover Dam, no injuries were reported. . I responded to Las Vegas Boat Harbor to launch NDOW vessel EX 3615. National Park Service Rangers Launched NPS Vessel 61 from Las Vegas Boat Harbor.
  
  Upon securing the vessel at the Las Vegas Boat Harbor launch ramp dock, I questioned Operator regarding consumption of alcohol. I ruled out that there was impairment due to alcohol. Upon checking required safety equipment I found that the vessel lacked a fire extinguisher and a Type IV throw able device.  Both occupants had life jackets on when the vessel was underway. 
  
       Operator reported that upon entering Black Canyon, he reduced throttle speed by about half cruising approximately twenty miles per hour. Operator was operating fifteen to twenty yards from the east cliff wall. Operator indicated that he looked at his feet as something was tangled in his foot. Attempting to untangle his feet, Operator indicated that when he looked up he had little time to react before hitting the wall. The vessel impacted the east cliff wall at close to a ninety degree angle.  
  
       The vessel sustained severe damage to the bow both on the port and starboard side. The steel railing was ripped off of the gunwale; the rub rail was separated from the deck cap and the gunwale, there was extensive fiberglass damage to the bow due to a direct impact with a stationary object. The fiberglass damage extended from the bow to below the waterline of the vessel, the damage is severe fiberglass cracking compromising the integrity of the hull. Vertical cracking in the fiberglass hull was evident on both the starboard and port side of the bow. Cracks were approximately 18” in length extending from below the water line vertically up the freeboard. These cracks were approximately 12” from the keel of the vessel.   
  
       Upon further inspection of the safety equipment, the vessel did not have an adequate type 4 throw able device, nor did the vessel have a fire extinguisher. Operator was cited for the safety equipment violations.
  