The Swiftsure-class is a class of submarines used by the Royal Navy of the United Kingdom. Designed in the 1970s, these submarines are primarily intended for anti-submarine warfare and intelligence gathering. They are known for their distinctive hull shape and advanced sonar systems, which enhance their stealth and operational capabilities. Each Swiftsure-class submarine is equipped with torpedoes and can carry out various missions, including surveillance and reconnaissance. The class has been succeeded by more advanced submarine designs, but it played a significant role in the Cold War era, contributing to the Royal Navy's underwater fleet capabilities.