A DESTROYER is a type of warship that is designed for offensive and defensive capabilities. It is typically smaller than a battleship and is equipped with torpedoes, mines, and anti-submarine weapons. The term 'DESTROYER' can refer to three different types of vessels: TORPEDO boats, MINE sweepers, and U-boats. TORPEDO boats are small, fast ships that are armed with torpedoes and used to attack enemy ships. MINE sweepers are vessels that are used to detect and remove naval mines from the water. U-boats are submarines that are used to attack enemy ships and submarines. All of these vessels are considered destroyers and are used to protect and defend against enemy forces.