RedactedNarrative: Accident occurred approx 566 yds se of sailboat boat ramp and approx 1378 nw of south dam boat ramp and approx 1203 yds sw of little axe boat ramp.  Vessel 1 was traveling northwest from the south dam area back to the sailboat boat ramp.  Vessel 1 encountered high winds and waves in the open water area of the lake.  The operator stated that the waves were coming over the bow of the vessel and that the bilge pump was not pumping a steady stream of water at the time of the accident but that it was working. Operator attributed intermittent pump to the wave action of the water.  Vessel 1 eventually capsized after a large wave caused the vessel to roll and sank below the surface of the water.  Both occupants were able to float on the plastic gas tanks that were in the vessel the operator was able to make his way to shore and flag down another boat to go pick up the passenger.  Both subjects were taken to the hospital and treated and released for hypothermia.
   