Yes they are. I have one of each and can never tell which one I am using..

DownTheLineSar said..
Thank you, good to know..
a comment coming from Severne would be very appreciated.

Search for severne on the forums and pm Ben.

Yes thank you, I know the unifiber charts but i don't know about the truthfulness of them.
Seems the bend curve had a little change...But it really happened? This is the question...

I'm waiting for someone to frame that Unifibre chart and give it to me for Christmas!

Whatever the case, the curve has not changed. Everything is backwards compatible. Reading between the lines, there is no denying that there can be some variances between individual masts.

Getting the masts out in the market is one of the first steps to selling the sails, it'd be madness to change the mast curve, especially the Gorilla!

The 2015 sails will work in the older masts, and vice versa.

Thanks a lot to everyone, especially Barn who finally solved this issue...

Severne n.1 windsurfing equipment!