
S-1 PRO
PREMIUM MANOEUVERABILITY
The S-1 Pro introduces CARBON FUSION, the next level in load-path sail design. Panels of highly warp oriented carbon fibre are welded together to form an ultralight skin that reacts and responds to rider input as if it’s alive.
Each panel is oriented to allow horizontal elasticity, whilst locking up the vertical stretch.
Core stability is maintained under load to maximise wind range. Dynamic flex with instant reflex creates a spring that can be loaded up for explosive release. Lock and load.
The S-1 Pro is a four batten layout in all sizes. Moderate back hand pressure provides the juice to power into any manoeuvre. Large monofilm window for maximum visibility.
Ultimate performance.
Used by Jaeger Stone, the S-1 Pro has been developed to power up his style;
/ High stability to maintain profile integrity under extreme conditions.
/ Optimised window for pinpoint precision when attacking the lip.
/ Power on tap for turbo boost jumps and wave destruction.



021 S-1 Pro | Luff | Boom | Battens | Weight (kg) | Head | Mast | RDM/SDM | Enigma Boom | Alt. Boom | Extension |
---|---|---|---|---|---|---|---|---|---|---|
3.3 | 342 | 144 | 4 | 2.17 | FIXED | SEVERNE 340 Wave | RDM | Enigma 140 | METAL 140 | Cyclops 24 |
3.6 | 358 | 150 | 4 | 2.29 | FIXED | SEVERNE 340 Wave | RDM | Enigma 140 | METAL 140 | Cyclops 24 |
4.0 | 375 | 152 | 4 | 2.42 | FIXED | SEVERNE 370 Wave | RDM | Enigma 140 | METAL 140 | Cyclops 24 |
4.4 | 396 | 156 | 4 | 2.55 | FIXED | SEVERNE 370 Wave | RDM | Enigma 140 | METAL 140 | Cyclops 24 |
4.6 | 402 | 160 | 4 | 2.62 | FIXED | SEVERNE 400 Wave | RDM | Enigma 140 | METAL 140 | Cyclops 24 |
4.8 | 406 | 162 | 4 | 2.68 | FIXED | SEVERNE 400 Wave | RDM | Enigma 140 | METAL 140 | Cyclops 24 |
5.0 | 416 | 163 | 4 | 2.78 | FIXED | SEVERNE 400 Wave | RDM | Enigma 140 | METAL 140 | Cyclops 24 |
5.2 | 424 | 168 | 4 | 2.83 | FIXED | SEVERNE 400 Wave | RDM | Enigma 140 | METAL 140 | Cyclops 24 |
5.6 | 430 | 174 | 4 | 2.94 | FIXED | SEVERNE 400 Wave | RDM | Enigma 150 | METAL 150 | Cyclops 36 |
TECHNOLOGY
/ CARBON FUSION
/ SPIDERFIBRE


SEAMLESS HEAD PANEL
This high abrasion area is made from only 1 panel and does not carry any exposed seams, preventing any potential weak point in this area. As a result, seam creep and seam-related failure have been eliminated.


UNIDIRECTIONAL CARBON FIBRE + OFF AXIS DYNEEMA.
Unidirectional Carbon is aligned to all primary load paths and eliminates any stretch. Off axis Dyneema enables horizontal elasticity, allowing the sail to flex and react with lightning speed. Superior fibres deliver superior performance.

3&4 ROLLER TACK PULLEY
Roller tack pulleys are matched to the sails downhaul requirements and aligned for friction free downhauling and threading ease. Rig your sails with the Severne Hardware Division extensions for function and simplicity.


THERMOFORMED TACK FAIRING
Protects your board from impact and neatly covers the foot detailing. It incorporates the rope stash pocket for easy storage of your downhaul rope.


MOLDED SOFT EDGE
With recessed grooving, covering any vulnerable stitching the moulded soft edge encloses the hard edge long the foot of the sail and protects the stitching from wear along the board non-skid.


ULTRASONICALLY WELDED SEAMS
Each carbon segment is ultrasonically welded in place. This has multiple advantages over traditional sewing techniques.


PANEL LAYOUT ALIGNED TO LOAD PATHS
Each panel is strategically placed to align with the sails' specific loads, on all sizes.
This has multiple advantages over aesthetic panel layouts
RECOMMENDED
/ BOARD
MAKO. NANO.
/ MAST
RDM RED – For ultimate performance.
RDM BLUE – High end performance with increased reliability.
GORILLA – For durability with an unconditional 2 year limited warranty.
S-1 Pro is compatible only with RDM masts.
/ BOOM
ENIGMA – For ultimate performance.
METAL – For high end performance.
/ EXTENSION
CYCLOPS
COMPARISON
/ S-I
The S-I Pro is more expensive.
The S-1 Pro features revolutionary Carbon Fusion technology.
The S-1 Pro is lighter.
/ BLADE
The S-I Pro has 4 battens.
The S-I Pro is more manoeuvre oriented.
The S-I Pro has more backhand pressure.
/ BLADE PRO
The S-I has 4 battens.
The S-I is more manoeuvre oriented.
The S-I has more backhand pressure.
RECOMMENDED
/ BOARD
MAKO. NANO.
/ MAST
RDM RED – For ultimate performance.
RDM BLUE – High end performance with increased reliability.
GORILLA – For durability with an unconditional 2 year limited warranty.
S-1 Pro is compatible only with RDM masts.
/ BOOM
ENIGMA – For ultimate performance.
METAL – For high end performance.
/ EXTENSION
CYCLOPS
COMPARISON
/ S-I
The S-I Pro is more expensive.
The S-1 Pro features revolutionary Carbon Fusion technology.
The S-1 Pro is lighter.
/ BLADE
The S-I Pro has 4 battens.
The S-I Pro is more manoeuvre oriented.
The S-I Pro has more backhand pressure.
/ BLADE PRO
The S-I has 4 battens.
The S-I is more manoeuvre oriented.
The S-I has more backhand pressure.
CARBON FUSION
PRECISE. ALIVE. ELECTRIC
Our search for higher performance has brought us CarbonFusion, the next level in load-path sail construction.
Carbon Fusion sails are composed of 3 key componants;
/ MATERIAL
/ FUSED SEAMS
/ LOAD PATH FRAME
The result of these 3 key components effectively turns the sail into a spring. Load it up, and release for explosive performance.

MATERIAL
UNIDIRECTIONAL CARBON FIBRE + OFF AXIS DYNEEMA.
Unidirectional Carbon is aligned to all primary load paths and eliminates any stretch. Off axis Dyneema enables horizontal elasticity, allowing the sail to flex and react with lightning speed. Superior fibres deliver superior performance;
/ DYNAMIC: Carbon warp with no stretch combined with medium stretch 45∞ Dyneema.
/ STRONGER: Dyneema is one of the strongest fibres available.
/ LIGHTER: Carbon has the highest strength to weight ratio.

FUSED SEAMS
ULTRASONICALLY WELDED SEAMS.
Each carbon segment is ultrasonically welded in place. This has multiple advantages over traditional sewing techniques;
/ STRONGER: Full seam adhesion plus the benefit of not puncturing the films with needle holes.
/ LIGHTER: Removal of outer seam tapes and thread.
/ ACCURATE: No seam shrinkage from outer tapes, or thread tension.

LOAD PATH FRAME
PANEL LAYOUT ALIGNED TO LOAD PATHS.
Each panel is strategically placed to align with the sails specific loads, on all sizes.
This has multiple advantages over aesthetic panel layouts;
/ LIGHTER: Aligning fibre accurately with the loads in the sail allows thinner films and much lighter sails.
/ STRONGER: High density of Dyneema and carbon in specific areas.
/ LIGHTNING RESPONSE: Carbon fibre transfers load instantly, without lag due to stretch.
1. PRIMARY LOADS
Primary loads run vertically between head and tack. Downhaul tension transfers directly through the warp oriented carbon.
2. FOOT LOADS.
Foot tensions transfer between the tack and the clew. High density fibreadds impact strength in this area.
3. LEECH LOADS
Leech loads run vertically up the leech, with dynamic loads tensioning the carbon and then springing back for explosive performance.
4. BODY LOADS
Body tension is transferred out of the head and clew.