RedactedNarrative: Operator A was underway aboard Vessel A approaching a mooring in the harbor. Prior to making Vessel A fast to the mooring, Operator A heard a popping noise and then observed smoke coming from the engine compartment of Vessel A. Operator A told Passengers A and B to move to the stern of the boat and then opened the engine hatch to investigate. Operator A observed fire in the engine compartment and attempted to extinguish it with a fire extinguisher. 
  
  Passengers A and B boarded Vessel A's skiff and rowed away from Vessel A. Operator A jumped overboard when the fire became unmanageable. Operator A was recovered from the water by the skiff. Vessel A was consumed by fire and after being extinguished by the fire department, only the hull remained. Operator A believes fuel and or fuel vapors ignited in the engine compartment; possibly due to a carburetor problem. Vessel A was a powered by gasoline. Operator A had checked the engine compartment earlier and did not detect any leaks or problems.