The term 'Bygone Warship' can be solved by the 9-letter word 'Ironsides'. The term 'Ironsides' is a nickname for the USS Constitution, a wooden-hulled, three-masted heavy frigate of the United States Navy. Launched in 1797, it was one of the original six frigates authorized for construction by the Naval Act of 1794 and the first vessel of the U.S. Navy to be named by the President. It is most famous for its actions during the War of 1812 against the United Kingdom, when it captured numerous merchant ships and defeated five British warships. The USS Constitution is still afloat today and is the world's oldest commissioned naval vessel.