RedactedNarrative: Operator had taken his boat out on 5/30 and on the way back to the mooring the engine stalled and would not restart, he had to be towed in.  On 6/1/2022 he returned to the boat and tried to start it, the engine just clicked.  A short time later he observed smoke start to emerge from the engine room.  He tried to fight the fire with an extinguisher but the smoke became too overwhelming and he abandon the boat in his dingy.  The fire boat arrived and fought the fire but the boat eventually sank.  No injuries were reported and Operator was alone on the boat at the time of the incident.