The Arethusa-class was a class of light cruisers built for the Royal Navy during the early 1940s. Designed for anti-aircraft and anti-submarine warfare, these ships were equipped with advanced radar and weaponry for their time. The class included several ships, with the lead ship being HMS Arethusa. These cruisers played a significant role in World War II, participating in various naval operations. Their design emphasized speed and maneuverability, allowing them to effectively engage enemy forces while providing support to larger vessels. The Arethusa-class contributed to the Royal Navy's efforts in maintaining maritime security during the conflict.