RedactedNarrative: UNIT 1 HAD FINISHED GETTING FUEL. THE BLOWERS WERE ON AND WHEN THE OPERATOR TURNED THE STARBOARD IGNITION SWITCH ON THE VESSEL EXPLODED. THE PORT ENGINE WAS OFF AT THE TIME.  THE OPERATOR USED THE ON BOARD HALON SYSTEM BUT IT DID NOT EXTINGUISH THE FIRE. THE TWO PEOPLE ON BOARD WERE ABLE TO GET OFF OF THE VESSEL WITHOUT ANY INJURIES. THE FIRE THEN SPREAD TO UNIT 2. UNIT 1 WAS BURNT TO THE WATER LINE AND SUNK AT THE FUEL DOCK. UNIT 2 SUSTAINED HEAVY FIBERGLASS BRUN DAMAGE, WATER AND SMOKE DAMAGE.