There is an interesting thread on rcgroups.com. A man in Sweden who builds and sails various 12 meters in 1/10 scale. Another man just bought a treasure trove of Australian 12 meter history and a couple of 1/13th scale models at auction to add to his collection.

https://www.rcgroups.com/sailboats-59/
Australian 12 meter enthusiasts. Look at the current pages. Currently Page 79. Videos included. Great thread
Amusing contest currently going on over the use of the word/name Courageous.

I myself this fall managed to pick up what I would call an A2 tribute 1/13th scale RC empty boat and rig. The lead keel is dropped a bit for stability and the keel shape and wings are wrong/flat. But where are you going to find a better one? I hope to make it so it can sail by spring.

Of course the middle image is A2, and the other winged keel boat is probably KA6. Oh well, interesting anyway.

Scott