Severne also offers its all-round wave sail S1 in addition to the standard varinate as the S1 Pro - this is even lighter and manufactured using an elaborate carbon construction. The idea: instead of the film, tensile fibres should absorb the forces in the sail, the connecting monofilm can then be made thinner and therefore lighter. As a result, the S1 Pro in the test size of 5.0 square metres weighs an almost unbeatable 2.58 kilos. But even the standard version of the S1 is one of the lightest wave models on the market at just 2.73 kilos.
In the test, we tried out whether the feather-light weight is also noticeable on the water and whether the surcharge for the Pro version is reflected in measurable performance. We tested the sails on the North Sea back in autumn, and we were out on the Baltic Sea again in April 2026 for the production of this video test.
The video test covers the following aspects:
- Comparison of the two construction methods
- Tips on trim & tuning
- Equipment & features
- Test impressions on glide, control, handling & wave suitability
In the video test, we explain what the models can do on the water and what differences we noticed during testing.
Manuel Vogel
Editor surf
