RedactedNarrative: VESSEL 1 WAS SOUTHBOUND IN THE INTRACOASTAL WATERWAY WHEN WAKE FROM A HEAVY VESSEL STRUCK THE REAR OF THE VESSEL. VESSEL 1 WAS PARTIALLY FLOODED AND THEN OVERTURNED EJECTING ALL OF THE OCCUPANTS. NO INJURIES WERE REPORTED. THE VESSEL WAS REMOVED FROM THE SCENE BY A COMMERCIAL TOW COMPANY CONTRACTED BY THE OWNER.  Operator had been drinking and may have contributed to lack of attention and delay of action taken.