A warship is a type of naval vessel used for combat purposes. A corvette is a small, maneuverable, lightly armed warship, typically with a single deck of guns. A GALLEON is a large, multi-decked sailing ship used mainly by European countries from the 16th to 18th centuries. A SUB is a short form of SUBMARINE, a type of warship that operates underwater. An ironsides is a warship with strong sides, usually made of iron or steel. A FRIGATE is a type of warship, typically with a single gun deck, used mainly for convoy escort and coastal patrol. A DESTROYER is a fast and maneuverable warship designed to escort larger vessels in a fleet and defend them against smaller, powerful attackers. A CRUISER is a type of warship, typically with several decks of guns, used mainly for scouting and patrolling. A RAM is a type of warship, typically with a reinforced bow, designed to damage enemy ships by ramming them. A TRIREME is an ancient warship, typically with three banks of oars, used mainly by the Greeks and Romans. A galleass is a type of warship, typically with two or three decks of guns, used mainly in the Mediterranean from the 15th to 17th centuries. A SUBMARINE is a type of warship that operates underwater. A SLOOP is a type of warship, typically with one or two masts, used mainly for coastal patrol and convoy escort. A man-of-war is a type of warship, typically with two or more decks of guns, used mainly by European navies from the 16th to 19th centuries.