1797 USS Constitution launched

The USS Constitution, a 44-gun U.S. Navy frigate built to fight Barbary pirates off the coast of Tripoli, is launched in Boston Harbor. The vessel performed commendably during the Barbary conflicts, and in 1805 a peace treaty with Tripoli was signed on the Constitution's deck.
During the War of 1812, the Constitution won its enduring nickname "Old Ironsides" after defeating the British warship Guerriýre in a furious engagement off the coast of Nova Scotia. Witnesses claimed that the British shots merely bounced off the Constitution's sides, as if the ship were made of iron rather than wood. The success of the Constitution against the supposedly invincible Royal Navy provided a tremendous morale boost for the young American republic.
In 1855, the Constitution retired from active military service, but the famous vessel continued to serve the United States, first as a training ship and later as a touring national landmark. Since 1934, it has been based at the Charlestown Navy Yard in Boston. Over the years, Old Ironsides has enjoyed a number of restorations, the most recent of which was completed in 1997, allowing it to sail for the first time in 116 years. Today, the Constitution is the world's oldest commissioned warship afloat.