Actually, although very similar, the Dockerell is not quite identical to the Hurley. It has shallower draft due to a redesigned keel, the lower edge of which is flaired out almost to a wing, concentrating weight lower down, and the boat is completed to a much higher standard of finish than the Hurley.
At the moment there`s one listed on Yachtsnet`s excellent site with loads of pics- www.yachtsnet.co.uk
Hope this helps,
Pete.