Structure returned to serving as a museum ship, acquiring 100,000 people a year in Boston. She was taken care of by a little crew who had been berthed on the ship, requiring far more trusted heating. The heating was upgraded to some pressured-air process in the 1950s, as well as https://old-ironsides-ids83638.blogminds.com/indicators-on-old-ironsides-ids-you-should-know-28574945