CASTINE — Undaunted by its brush with the remnants of Hurricane Bill, the historic schooner Bowdoin returned to Maine Maritime Academy last week after an 11-week cruise that encompassed a near circumnavigation of the Canadian island of Newfoundland. With Captain Eric Jergenson at the helm, Bowdoin arrived off Dice Head at the entrance to Castine Harbor late Wednesday afternoon. STEPHEN RAPPAPORT PHOTOS