There are fewer dining opportunities once you crossed the Charles River into Charlestown. In the Charlestown Navy Yard, the Shipyard Galley, located in Building #10 near USS Constitution, offers basic fast food selections likes hamburgers, salads, sandwiches, sodas and coffee. Their hours of operation are:
April 11–June 29: Tuesday through Sunday 10 a.m. to 3 p.m.
June 29-October 26: Monday through Sunday 10 a.m. to 5 p.m.