A fisherman’s effort to rebuild the vessel Erin went up in smoke early Monday.

Brian O’Riley was working on the 36-foot fiberglass boat behind the post office and had stepped into a trailer he was using as a shop about 20 feet away when he “heard a crackling noise” behind him. When he looked out, the vessel and a shed built around it were engulfed in flames.

“I was only in the shop for a…