At a Glance:
The S1 is Severne's concept wave sail, acting as the testing ground for new ideas and innovations within their wave sail series. For 2007 it has gone through quite a noticeable change, dispensing with the MetaleX strips in its upper panels for a durable yet lightweight x-ply material. Using various grades of x-ply in all but the main window panel and incorporating real reinforcement throughout, the S1 is certainly built to withstand the most arduous conditions. W6II-engineered and attractive looking, it boasts all the latest manufacturing techniques and features, including fold-over seaming in the foot, a 3D moulded tack fairing, a roller pulley block in the tack and abrasion pads in vulnerable areas. Whilst setting exclusively on RDM masts, another real plus is that all the sizes within the range are designed specifically to set on a 400cm mast, making it a very practical option for the travelling windsurfer.
Ride and Handling
On the water the new S1 gave a very rounded versatile performance, which was well liked by all who tried it. Particularly light and precise at rest, it nevertheless offers a good deal of bottom end power, pushing its energy directly into the board whilst remaining incredibly crisp and balanced in the hands. Its acceleration is almost instantaneous, feeling lively and reactive as it reaches an impressive top end, efficiently twisting to exhaust any rouge gust without affecting the rider's stance. Possessing an excellent natural range to compliment its tuning capacity, the sail is fantastically diverse and can adapt to suit any riding style, being fast and efficient enough for bump and jump blasting; powerful enough to drive through cross-onshore waves; and reactive enough to handle cross-offshore utopia. In cross-onshore wave riding it doesn't pull through the turn as positively as the Blade, preferring to rely on its speed and efficiency to let the rails of the board do their work. A purist wave-rider's dream tool, the S1 is a stunning sail that allows them to concentrate on their own expressive performance.
Plus: Balanced power with fantastically light precise handling.Minus: Only for use on RDM masts.
* :The S1 has been completely redefined for 2007, offering a whole new level of precise reactive handling and useable power across an impressive wind range. It comes well recommended by us.
seems they liked it 
i have my doubts about rigging a 5.7m on a 400cm mast tho... sounds great in theory (1 mast, woot!) but how's it go in practice?
not pi$$ taking, genuinely interested.
apparantly the luff of the 5.7 is the same as the 5.3 give or take a cm....
i use an 05 5.3 S1, and it is the dogz .......favourite sail by a standout mile, i've tried nearly every brand.....i'd love to give the 5.7 a demo...
Ive been using the s1 5.7m2 on a 400 mast for three seasons and no probs
just need the 45cm extension which leaves plenty of excess extension after rigging the sail ( i think it is a 430 luff)
I've been using the windsurfing hawaii extension that goes over the outside of the mast and now thinking of going to the internal ext.
the masts are fairly bullet proof so I think that helps.
I thought the 2004 series had a bit more bottom end than the 2006 series, but the 2006 can be turned off easier once your on the wave.
But maybe I'm just imagining that?
