RedactedNarrative: Vessel was travelling northeast on Black Lake with three persons onboard.  No one was wearing a PFD.  A passenger was sitting in an elevated seat in the bow of the vessel obstructing the view of the operator.  The vessel grounded on a shoal causing the passenger in the bow to be ejected.  The operator entered the water without a PFD in an attempt to assist the passenger.  The other passenger attempted to start the vessel to no avail.  The passenger from the bow was recovered and transported to the hospital for water inhalation.  The operator was found having drowned.