RedactedNarrative: OPERATOR 1 WAS OPERATING VESSEL 1 WHILE CRUISING ON PLANE. AS VESSEL 1 WAS UNDERWAY VESSEL 1 EXPERIENCED AN UNKNOWN MECHANICAL FAILURE IN THE ENGINE COMPARTMENT LEADING VESSEL 1 TO BECOME FULLY ENGULFED. ALL OF THE OCCUPANTS ON VESSEL 1 WERE ABLE TO LEAVE VESSEL 1 VOLUNTARILY AND WITHOUT ANY SUSTAINING ANY INJURIES. VESSEL 1 WAS A TOTAL LOSS DUE THE FIRE.