UPDATE: THE body of an 82-year-old man has been found floating face-down near a tinny on the NSW south coast.
Police have described the incident as "a boating tragedy".
The man's body was found at about 6.15am (AEDT) today near an eight-foot tinny at Sussex Inlet by another man who was out on the water, police said.
Initial inquiries suggested the man had left a boat ramp by himself on a trip to catch prawns at about 6pm (AEDT) yesterday.
The body has not been formally identified, but police believe the deceased is an 82-year-old man from Rooty Hill in Sydney's outer west.