USS Constitution is a wooden-hulled, three-masted heavy frigate of the United States Navy. Named after the Constitution of the United States of America, she is the world's oldest commissioned naval vessel afloat. Launched in 1797, Constitution was one of six original frigates authorized for construction by the Naval Act of 1794 and the third constructed. Built in Boston, Massachusetts her first duties with the newly formed United States Navy were to provide protection for American merchant shipping during the Quasi-War with France and to defeat the Barbary pirates in the First Barbary War.
Constitution is most famous for her actions during the War of 1812 against Great Britain, when she captured numerous merchant ships and defeated five British warships. The battle with HMS Guerriere earned her the nickname of "Old Ironsides" and public adoration that has repeatedly saved her from scrapping. She continued to actively serve the nation as flagship in the Mediterranean and African squadrons, and circled the world in the 1840s. During the American Civil War she served as a training ship for the United States Naval Academy and carried artwork and industrial displays to the Paris Exposition of 1878. Retired from active service in 1881, she served as a receiving ship until designated a museum ship in 1907. In 1931 she started a three-year, 90-port tour of the nation, and in 1997 she finally sailed again under her own power for her 200th birthday. (Full article...)