Rondar race boats can build the Viper in the UK.
Keep your hair on though as this is a monohull sportsboat.
still looks nice
http://www.rondarboats.com

Those things look like fun.

"The Viper Class Association has agreed to purchase the class molds and the rights to appoint builders and distributors from Race One. " This quote refers to the dingy, not the catamaran, still, I find the idea intriguing.

Essentially the sailors wanted control of the class rather than letting the builder dictate prices and specs.

A similar thing happened with the Dart 15 (aka Sprint 15) catamaran where the Association bought the moulds from Laser, found a suitable builder in South Africa and it has revitalised the class with new boats coming in to the UK for virtually the same price that Laser were charging 3 or more years ago.

There must be a downside. Lack of innovation?

That's the point - they don't want innovation. The aim is to keep it as One Design as possible.

Lack of innovation is not good, still, a revisit to the rules every three years or so might allow this to work.

I'm well satisfied with my Blade and don't really care if it becomes obsolete, but I wouldn't want to risk putting the rest of the class in that position.

The Dart you mentioned is doing well? Class numbers are increasing?

Try pushing that Viper up the beach on your own

LOL. Would be fun downwind in 20 knots.