RedactedNarrative: THE OWNER OF UNIT 1 WAS WORKING ON THE VESSEL'S GENERATOR WHILE IT WAS TIED OFF IN THE SLIP.  THE GENERATOR BACKFIRED CAUSING AN EXPLOSION AND A FIRE.  THE OWNER AND A WITNESS WERE UNABLE TO EXTINGUISH THE FIRE AND THE VESSEL BECAME ENGULFED IN FLAMES.  THE FIRE SPREAD CAUSING DAMAGE TO APPROXIMATELY 2 other BOATS AND THE MARINA DOCKS.