RedactedNarrative: On the 4th day of august 2018 I responded to the call of a boating accident in hidden harbor slough on Chickamauga Lake. An individual had fallen while crossing from one vessel to another and did not resurface. Once on scene witnesses stated that victim was crossing from his friend''s vessel over to his when he tripped and fell striking his head on the swimming platform of his vessel. The witnesses also stated that he fell overboard into the water and appeared to be unconscious, several witnesses tried to get to him but he sunk below the surface. Witnesses entered the water to try and locate him  but were unsuccessful and he did not resurface. A search and rescue effort was conducted with divers and ROVs until 12:00am on 08-05-18 and resumed that next day at 10:00am. His body was found and recovered at approx. 10:15am on 08-05-18 and taken ashore where he was transported to the Hamilton co medical examiner''s office for autopsy.  The victim had been drinking alcohol.