In 1794, in order to protect American merchant vessels from the attacks of Barbary pirates in the Mediterranean, Congress commissioned six frigates, including the 44-gun "Constitution." Joshua Humphreys and Josiah Fox designed the vessels with sturdier timbering, heaver armament, and more sail than contemporary European frigates. "Constitution" was constructed at Hartt's Shipyard in Boston and launched in 1797. After the War of 1812, the frigate remained on active duty until 1855, and then served as a naval training ship before being placed on exhibition at the United States Navy Yard, Boston, where she still may be visited.

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