KEY WEST, Fla. (AP) -- Authorities in the Florida Keys are searching for a man who went missing during a boating trip.

The Monroe County Sheriff's Office reports that the U.S. Coast Guard detected 40-year-old Jay Wesley Rydberg's emergency beacon May 14 at 4:13 a.m. During a 78-hour search, Rydberg's beacon was found 33 miles north of Key West, but there were no signs Rydberg or his 39-foot trimaran sailboat. At the time the beacon went off, there were no reported storms in the area.

Rydberg had been living on his boat at a Key West marina for the past year. His sister told authorities that he had moved from Alaska to Florida to be near his 11-year-old son, who lives in southwest Florida. He was sailing from Fort Myers back to Key West when he disappeared.