HMS Caroline is a decommissioned C-class light cruiser of the Royal Navy that was the lead ship of her sub-class. Completed in 1914, she saw combat service during the First World War and served as an administrative centre in the Second World War. The ship served as a static headquarters and training ship for the Royal Naval Reserve, based in Alexandra Dock, Belfast, Northern Ireland, for the later stages of her career. At the time of her decommissioning in 2011 she was the second-oldest ship in Royal Navy service, after the ship-of-the-line HMS Victory. Caroline was converted into a museum ship after she was decommissioned. From October 2016 she underwent inspection and repairs to her hull at Harland and Wolff and opened to the public on 1 July 2017 at Alexandra Dock in the Titanic Quarter in Belfast.