Description
Exceptional glide
Exceptional glide: North's carbon stabilisers with a thinner profile and higher aspect ratio have less drag and a more efficient outline. Combine the S320 with a large front wing to get up earlier, with more balance and stability.
Area 320 cm² · Span 430 mm · Aspect ratio 5.9 · Pre-preg carbon
Who it's for
- Riders with large front wings who want to get up earlier.
- Anyone looking for more balance and stability.
What makes it special
01 Clean flow
Mounted on top of the fuselage, it works outside the front wing's turbulence.
02 Easy to recover
Gives earlier warning when it breaches and recovers easily.
03 Thinner profile
Less drag.
04 Higher aspect ratio
Less drag than previous stabilisers.
05 More efficient outline
Less drag and more glide.
06 Less friction
Less friction for better glide.
Sonar stabilisers
| STABILISER | AREA | SPAN | ASPECT RATIO |
|---|---|---|---|
| S122 | 122 cm² | 370 mm | 11.2 |
| S145v2 | 145 cm² | 350 mm | 8.4 |
| S142 | 150 cm² | 380 mm | 10.2 |
| S158v2 | 158 cm² | 380 mm | 9.1 |
| S178 | 180 cm² | 380 mm | 8.1 |
| S185 | 185 cm² | 350 mm | 6.6 |
| S208 | 208 cm² | 380 mm | 7.0 |
| S210 | 210 cm² | 350 mm | 5.9 |
| S215 | 217 cm² | 368 mm | 6.3 |
| S238 | 238 cm² | 430 mm | 7.8 |
| S320 | 320 cm² | 430 mm | 5.9 |
North's official data; this stabiliser is in bold.
Technology and construction
- Construction: pre-preg carbon: optimal stiffness and direct response.
- Hardware: C screw set (M8 x 16).
- Mounting: it is mounted on top of the fuselage, outside the front wing's turbulence.
- Sonar system: compatible with all Sonar aluminium and carbon fuselages.
- Includes: stabiliser, cover and C screw set (M8 x 16).
See it in action
Which one to choose?
- Sonar S238 (238 cm²): smaller, needs less front-foot pressure.
Pair it with: MA1500v2 front wing, MA1850v2 front wing, MA2100v2 front wing, Sonar carbon fuselage and spare C screws.
Frequently asked questions
Which front wings should I pair it with?+
According to North's compatibility chart: MA1500v2, MA1850v2, MA2100v2 and MA2400v2.
What changes with a bigger or smaller stabiliser?+
According to North, the stabiliser creates a downward force that stops the front wing from nosediving: a bigger one needs more front-foot pressure, and a smaller one less.
Which screws does it come with?+
It comes with the C screw set (M8 x 16). North recommends applying marine grease to the screws every time you assemble it.
Is it compatible with my foil?+
Yes, if you have North's Sonar system: it fits all its aluminium and carbon fuselages.
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