RedactedNarrative: Vessel one was operating south bound in the Atlantic Ocean, in the area of the Sandpile, approximately three miles Northeast of the St. Lucie Inlet. The vessel had an electrical malfunction and ignited the engine compartment. The owner of the vessel activated the vessel's fire system and attempted to put the fire out with fire extinguishers. The vessel became completely engulfed in flames and the two occupants on board left the vessel on a tender. The occupants were uninjured and the vessel sunk.