What are the oldest yachts in the world which are competing in organised races?

[Neil_Y]

old whaling boats still race in the Azores, no idea how old though.

 

[TallBuoy]

Bermuda fitted dinghies go back to 1853, but they may be replicas rather than originals now.

http://www.boats.com/fourteen-feet-crew-of-six/

The rule allowing the skipper to chuck some of the crew off appeals !