RedactedNarrative: Operator and his son had traveled from Fleet Harbor toward Wheeler Dam to fish. Once they got to the dam they began fishing with Operator on the front of the vessel and Occupant fishing from the stern. The wind and waves caused water to begin coming over the stern of the vessel. Operator tried to get the vessel started, but according to him, it would not start. The water came into the vessel to the point that the vessel capsized. Both persons were wearing their pfd and tried to stay with the vessel. They were unable to stay with the vessel and swam toward the small island where the powerline towers are located. Another vessel that was fishing in the area picked up both of them from the island and took them to the boat ramp at Safe Harbor. From there Operator was transported to ECM hospital in Florence for observation, and his son Occupant was picked up by his Mother. I interviewed Operator at the hospital and he related that the vessel had recently been in the shop at Tennessee River Marine where a 90 hp Evinrude outboard motor was installed. The vessel was recovered by the Lawrence County EMA vessel, and was upside down in the river. The vessel was righted and put on a trailer on Sunday.  The vessel took on water from the stern, leading the officer to believe vessel was overloaded.