RedactedNarrative: Operator stated that he and his passengers had fished several locations and had been out several hours when they decided to drift fish in the creek recreation area. Passenger 2 noticed water coming over the stern of the vessel. Operator then noticed water coming out of a vent in the center of the floor of the vessel. Operator attempted to start the vessel in order to move the vessel but the engine would not start. Within a few minutes, the vessel began to sink from the stern. Vessel sunk and then capsized but remained afloat. Passengers and operator were able to hang onto the vessel. Victim 1 was wearing her pfd but was unable to swim. Operator retrieved a type iv pfd and attempted to help the victim who was about 40 yards from the vessel and face down in the water. Victim 1 had been struck in the head by a floating ice chest. Operator was able to get to victim 1 and pull her head out of the water while passenger 1 and 2 signaled for help from nearby fisherman. Witness 1 and 2 were fishing in the area and retrieved the operator, victim, passengers and a small dog. Upon inspection of vessel 1, several screws were found protruding out of the hull around the stern area and around the bow area as well as several empty screw holes were located in the hull. Area of the accident was approx 100 yards w or the creek point and approx 400 yards south of the creek recreation area boat ramp.