RedactedNarrative: THE OPERATOR IF THE VESSEL ADVISED THAT HE JUST PUT THE BOAT IN THE WATER. HE GAVE IT A LITTLE GAS AT IDLE SPEED, THEN WHEN HE GAVE IT MORE IT HESITATED THEN HE HEARD A BOOM/EXPLOSION. HE ATTEMPTED TO CONTAIN THE FIRE ON THE ENGINE WITH THE FIRE EXTINGUISHER. HE WAS THE ONLY PERSON IN THE BOAT AND THERE WERE NO INJURIES. VESSEL IS TOTALED.