premise: USS "Bowfin" (SS/AGSS-287), a "Balao"-class submarine, was a boat of the United States Navy named for the bowfin fish. Since 1981, she has been open to public tours at the USS "Bowfin" Submarine Museum and Park in Pearl Harbor, Hawaii, next to the USS Arizona Memorial Visitor Center.
hypothesis: USS Bowfin become a tourist attraction in 1981.
reason: We can call the Bowfin a touristic attraction as in the contest we learnt that "Since 1981, she has been open to public tours at the USS "Bowfin"