RedactedNarrative: Operator struck a navigational aid on plane at night.  This resulted in the occupants being ejected from the vessel.  Seven persons were rescued and brought to shore.  Two males refused medical treatment and fled the scene.  At this point they realized 1 female was missing.  10:00am the next morning the deceased was located.  Accident resulted in six injuries and one fatality.  Investigator determined the operator did operate negligently, failed to  maintain a proper lookout, had  his cockpit lights illuminated while underway obstructing his night vision, not paying attention at excessive speed struck the aid.  His vessel was equipped with state of the art marine electronics.  He fled  the scene with a passenger missing from his vessel and without providing his information to the USCG on scene or passengers on board.  He was not given a FST as he fled the scene but witnesses confirmed he had been drinking on board while operating.  He is being criminally charged by the Boston Police Department.  Active ongoing case in court.  Vessel homicide by reckless operation, fail to report accident and leaving scene of accident.