Coast Guard members and Boston Harbor Cruises conducted checks to ensure the boat 's safety before it headed back to shore , Clegg said . NEW : The stranded boat safely arrived at the Long Pier in Boston . The boat was five miles east of Boston , Massachusetts . It became stuck after a line tangled in its propeller .
NEW : The stranded boat safely arrived at the Long Pier in Boston . The boat was five miles east of Boston , Massachusetts . It became stuck after a line tangled in its propeller .