The USS Constitution, a three-masted frigate, is the oldest commissioned warship in the world that is still afloat. The vessel, nicknamed America’s Ship of State, is one of the original six frigates of the United States Navy and served from 1797 until 1855. She served with distinction during the War of 1812. The ship’s crew are active duty U.S. Navy sailors. More than 500,000 people visit the Constitution annually. The vessel, named by George Washington, is berthed at Pier One in Charlestown Navy Yard and part of Boston’s Freedom Trail.