RedactedNarrative: OPERATOR OF VESSEL 1 STATED THAT HIS VESSEL HAD EXPERIENCED MECHANICAL ISSUES SO HE HAD STOPPED TO WORK ON IT.  THE OPERATOR STATED THAT HE HAD PULLED THE FUEL FILTER OFF TO ATTEMPT TO CLEAN IT OUT AND REPLACED IT.  WHEN HE ATTEMPTED TO RESTART THE ENGINE GAS FUMES IGNIGHTED AND THE BOAT BEGAN TO BURN.  THE OPERATOR STATED HE ATTEMPTED TO USE HIS FIRE EXTINGUISHER BUT WAS UNABLE TO OPERATE IT DO THIS HIS STRESS LEVEL DURING THE SITUATION.   ALL OCCUPANTS THEN EXITED THE VESSEL AND WERE PICKED UP BY ANOTHER VESSEL THAT WAS NEAR BY.   VESSEL ONE THEN BURNED TO THE WATER LINE AS A TOW BOAT US ATTEMPTED TO EXTINGUISH THE FLAMES AND TOWED IT TO SHORE.