RedactedNarrative: On Sept. 1, 2014, an adult female was a passenger on a vessel (V01: MARQUIS / 2013 / 54 F / BLACK / GA0017LN ), with three others. Based upon witnesses' statements, subjects were returning to the dock after watching  the sunset. While en route to the dock, Victim needed to urinate and tried to use the rest rooms onboard the vessel. Victim broke one toilet attempting to get it to work. When Victim couldn't get either toilet to work, she went to the upper deck and told Operator that she had broken one of the toilets and placed a plastic piece from the toilet on a table. She told Operator to stop the vessel so she could jump in the water and relieve herself. Operator put the vessel in neutral and Victim and one other went to the back swim platform. Victim removed her wrap and dove into the water but did not resurface. Sgt. informed me that Victim had experience as a competition diver and was an experienced swimmer.  Cpl told me that no use of alcohol was detected from Operator.