RedactedNarrative: On 10-16-21 at approximately 1741 hours, I was patrolling the North Basin on Lake Havasu and observed a plume of smoke coming from the California shore line. Upon arrival to the area I observed a white Dominator fully englufed in flames. The operator of vessel 1, and his wife, were safe and on another vessel. He stated that he was driving down the lake and noticed some smoke coming from the engine compartment. He stopped and opened the compartment and noticed a small flame in the engine. He attempted to put the flames out with a fire extinguisher but the flames quickly grew. They then jumped off the boat and were picked up by a passer by. Upon my arrival, I put most of the flames out with my boat. San Bernardinio Fire boat arrived and extinguished the rest. Vessel 1 then sunk. Dive Time Recovery arrived and took possession of Vessel 1, and recovered the vessel from the bottom. Vessel 1 was a total loss and he estimated the damage to be $130,000.00.