Anyway, the Centurion 40s was first built in 1998 (I think) and I find it interesting that 10 years later a very similar hull is being used on the First 40. These companies must be using the same finite element analysis software.
I believe the Centurion 40 is a 2003 boat (it was Sailing world boat of the year).The First 40 is a 2008 boat and many believe that Farr was not very innovative with it, particularly in the stern design that looks a bit outdated.
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But yes we can say that those hull lines lasted a lot more than what is usual in those days of fast changes, so much that they can be considered already a kind of classic type. For instance, the Salona 41 is not very far away from that pattern and the truth is that the First 40 and the Salona 41 are still top contenders in the regatta world.