The Type 23 frigate, also known as the Duke-class, is a class of warships used by the Royal Navy of the United Kingdom. Designed primarily for anti-submarine warfare, these vessels are equipped with advanced sonar systems and torpedoes. They also have capabilities for air defense and surface warfare, making them versatile in various naval operations. Launched in the late 1980s, the Type 23 frigates have undergone several upgrades to enhance their technology and combat effectiveness. With a displacement of around 4,900 tons, they are capable of operating in diverse environments, supporting both humanitarian missions and combat scenarios.