RedactedNarrative: OPERATOR OF VESSEL 1 WAS TOWING A TUBE WITH PASSENGER 1 (DECEASED) AND PASSENGER 2 (WITNESS). THE OPERATOR WAS MAKING A TURN WHEN PASSENGER 1 FELL OFF THE TUBE. INITIALLY PASSENGER 1 REPORTED TO BE OKAY, BUT WAS HAVING GREAT DIFFICULTY GETTING BACK ON THE TUBE . OPERATOR CIRCLED BACK AROUND TO PICK UP PASSENGER 1, BUT AT THIS TIME PASSENGER WAS UNRESPONSIVE. AUTHORITIES WERE NOTIFIED AND VICTIM WAS TRANSPORTED TO SHORE. REVIVAL EFFORT WERE UNSUCCESSFUL.  THROUGH THE INVESTIGATION, THERE ARE SEVERAL INCONSISTENCIES WITH THE OPERATOR'S STATEMENT AND WITNESSES, INCLUDING WHETHER OR NOT THE VICTIM WAS WEARING A LIFE JACKET AND HOW LONG SHE HAD BEEN IN THE WATER BEFORE RECOVERY.  THE INVESTIGATION WAS CLOSED AS DESCRIBED.