IMHO the reason for the 430's birth was because the of the Mannering Park 14ft Regatta's and similar. I was sailing a 4.5 (sometimes with Spi) and places like Mannering Pk wouldn't let me compete as it was closer to a 15ft cat. This annoyed me and other 4.5 owners. So I think the 430 is BCC's answer to get a good little cat to compete against the Windies.

And maybe? I think they may tried to make it not too fast but tried to keep to potentual VYC above 86 so it is kept in the 14 ft class and not in with the 16ft boats like the fast (possibly faster?) 14^2 NACRA is.