RedactedNarrative: OPERATOR VESSEL 1 PULLED VESSEL TO SHORE TO ADDRESS VESSEL NOT RUNNING PROPERLY. OPERATOR WAS STANDING NEXT TO VESSEL 1 AND DISCONNECTED NEGATIVE BATTERY TERMINAL IN AN ATTEMPT TO RESET THE COMPUTER WHICH HAD WORKED IN THE PAST. WHEN OPERATOR RE CONNECTED THE TERMINAL CAUSING A SPARK THAT IGNITED FUEL FUMES CAUSING AN EXPLOSION AND SEVERE BURNS TO THE OPERATOR. OPERATOR WAS ON FIRE AND FELL INTO THE LAKE TO PUT OUT FLAMES. FIRE DEPT TRANSPORTED VICTIM TO LOCAL HOSPITAL AND HE WAS LATER FLOWN TO A BURN UNIT. VESSEL 1 SUSTAINED LITTLE TO NO DAMAGE.