The Swallow is a type of one-design classic keelboat that was used as a two-man Olympic class for the 1948 Olympics. It is now sailed with three crew. Now a thoroughly modern classic, the main fleet is at Itchenor in Chichester Harbour, West Sussex, with a smaller fleet at Aldeburgh, Suffolk. There are around 40 active boats. As a National Class, the rules and affairs of the Class are regulated by the Royal Yachting Association. Many of these boats are named after birds and, in particular, sea birds.