Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. HMS Unicorn and her near-sister ship, HMS Trincomalee, are surviving sailing frigates of the successful Leda class, although the original design had been modified by the time that the Unicorn was built, to incorporate a circular stern and "small-timber" system of construction. Listed as part of the National Historic Fleet, Core Collection, Unicorn is now a museum ship in Dundee, Scotland, United Kingdom.