RedactedNarrative: OWNERS LEFT THE HOUSEBOAT THAT MORNING TO GO TO BREAKFAST IN TOWN.  OWNER SAID HE HAD GOTTEN UP WITH THE INTENT OF MAKING COFFEE, TURNED THE RANGE ON BUT AFTER REALIZING HE DID NOT HAVE COFFEE, HE THOUGHT THAT HE TURNED OFF THE BURNERS AND THEN LEFT THE BOAT WITH HIS WIFE.
   
  OWNER REPORTED HE REGULARLY LEFT ALL THREE PROPANE TANKS OPEN, TWO TANKS IN THE REAR ONE POWERING THE HEATING UNIT, EVEN WHEN HE WAS AWAY FROM THE VESSEL
   
  SOURCE OF EXPLOSION SEEMED TO BE NEAR THE CENTER OF THE HOUSEBOAT VERY NEAR TO THE PROPANE TANK WHICH POWERED THE HEATER AND THAT WAS LEAKING.