RedactedNarrative: OPERATOR 1 WAS OPERATING VESSEL 1 AFTER THE OPERATOR HAD DISCOVERED A FUEL LEAK PRIOR TO LAUNCHING THE VESSEL. THE OPERATOR REPAIRED THE FUEL LEAK AND VENTILATED THE MOTOR FAN. AFTER THE OPERATOR LAUNCHED THE VESSEL AFTER MAKING THE REPAIRS HE LEFT THE MOTOR HOOD OPEN. AFTER SOME TIME THE OPERATOR CLOSED THE MOTOR HOOD AND THROTTLED THE VESSEL, AS THE OPERATOR DID THIS THERE WAS AN EXPLOSION IN THE MOTOR WELL CAUSING THE MOTOR HOOD TO BLOW OFF. THE OPERATOR TRIED UNSUCCESSFULLY TO EXTINGUISH THE FIRE, BUT WAS HELPED BY A PASSING VESSEL ALONG WITH THE PASSENGER OUT OF THE VESSEL SAFELY. THERE WAS NO INJURIES AND THE VESSEL WAS A TOTAL LOSS.