The Westland Wessex is a British utility helicopter that was developed in the 1950s. It is a variant of the American Sikorsky S-58 and was primarily used by the Royal Air Force and Royal Navy. The Wessex features a distinctive twin-engine design and is known for its versatility in various roles, including transport, search and rescue, and anti-submarine warfare. The helicopter was first introduced into service in 1961 and remained operational until the late 1990s. Its robust construction and reliable performance made it a valuable asset during its service life. The Wessex has also been used in civilian applications, showcasing its adaptability beyond military use.