RedactedNarrative: VESSEL#1 WAS CRUISING S/B ON MCGEE CREEK LAKE AND BEGAN TAKING ON WATER DUE TO A LEAKING HULL FITTING. A WAVE CAUSED THE VESSEL TO SWAMP AND PARTIALLY SINK. BOTH OCCUPANTS ENTERED THE WATER AND TRIED TO RESCUE THE VESSEL BUT COULD NOT. OHP AND OKLAHOMA STATE PARKS AND TOURISM RESPONDED TO THE SCENE. VESSEL#1 WAS TOWED TO POTAPO BOAT RAMP AND UPRIGHTED/ LOADED BY V1 OPERATOR.  AREA OF THE ACCIDENT WAS APPROX 100 FT NORTH OF THE SOUTH SHORE MCGEE CREEK LAKE AND APPROX 120 FT EAST OF THE WEST SHORE OF MCGEE CREEK LAKE AND APPROX 200 FT WEST OF THE EAST SHORE.