HMS Unicorn was built for the Royal Navy in the Royal Dockyard at Chatham and launched in 1824. She is a rare survivor from the days of sail, one of the six oldest ships in the world and Scotland's only representative of the sailing navy. Originally constructed as a 46-gun frigate at Chatham Royal Dockyard, Unicorn arrived in Dundee in 1873 as a training ship for the Royal Naval Reserves - a role she carried out until the 1960s. In 1968 the ship passed to the Unicorn Preservation Society which continues to care for and preserve the vessel.