RedactedNarrative: On 7/10/22, I Game Warden was on patrol at Lake Mead Recreation Area. At approximately 1700 I was notified by a boater that a vessel was tied off at the southern end of Sentinel Island and had sunk just off the shore. I made my way out to the vessel, identifying it. 
       I contacted Operator by phone for information regarding the incident. Operator stated that he had tied the vessel off at Sentinel Island at approximately 0930 on 7/10/22 while recreating with his wife and daughters Passengers 1, 2, and 3.  Operator attempted to turn over the vessel ignition but would not start nor did he hear the bilge system functioning. Operator stated the vessel began to take on water and attempted to contact Tow Boat US but were not able to assist due to the winds. Operator immediately notified National Parks Service (NPS) for assistance getting off Sentinel Island and was advised the vessel would need to be removed withing 48 hours. 
       As of 7/14/22 the vessel has been removed by Tow Boat US but an insurance quote has not been given regarding damages to electrical system and engine system. Due to the submerged nature of the vessel, damaged areas include elecrical system to include bilge system and engine system.