The USS Constitution was a naval ship.
A frigate [ ˈfrɪɡᵻt ] is any of several types of warship , the term having been used for ships of various sizes and roles over the last few centuries . USS Constitution . Constitution was launched in 1797 , one of six original frigates authorized for construction by the Naval Act of 1794 and the third constructed . As a fully commissioned U.S. Navy ship , her crew of 60 officers and sailors participate in ceremonies , educational programs , and special events while keeping Constitution open to visitors year round and providing free tours .