The United States Navy's three-masted frigate USS Constitution, better known as "Old Ironsides," is the world's oldest commissioned warship afloat. Maintained as a national monument at the Charlestown Navy Yard in Boston, Massachusetts, Constitution recently completed a four-year overhaul to restore the ship to original hull strength.
- History of USS Constitution
- Old Ironsides's Battle Record: Documents of USS Constitution's Illustrious Deeds
- Bibliography of sources on USS Constituition
- Operation Sail 200, the sailing of USS Constitution on 21 July 1997
- NHC Detachment Boston whose mission is the repair, maintenance, and restoration of USS Constitution
- USS Constitution home page which contains information on visiting the ship