Sonar SF830
Released March 2023
- Area
- 830 (cm²)
- Wingspan
- 86.5 (cm)
- Aspect Ratio
- 9.0
We’ve engineered our Sonar Surf Series for super low stall speeds, effortless pumping and surf-style carving. Ideal for riders wanting more from the surf and downwind swells (with or without a wing). The foils insensitive to angle of attack change means you don’t have to be an expert or have perfect pumping technique.
The SF promises a frictionless sensation of glide at slower speeds. Responsive and agile. With intuitive recovery. Wakesurfing ten waves back, prone surfing, wing-surfing, pumping or mastering the downwind.
The SF Series. At one with it all.
Comparison to similar foils
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| North | Sabfoil | Sabfoil | Sabfoil | Duotone | |
| Sonar SF830 | Razor PRO 875 | Medusa PRO 869 | Razor 880 | Whizz SLS 850 | |
| northkb.com | sabfoil.com | sabfoil.com | sabfoil.com | duotonesports.com | |
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Area cm² |
830 | 843 | 854 | 843 | 850 |
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Aspect Ratio |
9.0 | 9.2 | 8.84 | 9.2 | 8.7 |
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Chord cm |
– | 11.8 | 14.4 | 11.83 | – |
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Thickness cm |
– | 1.677 | 1.7 | 1.78 | – |
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Volume cm³ |
– | 775 | 757 | 834 | – |
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Wingspan cm |
86.5 | 87.5 | 86.9 | 88.0 | 86.0 |
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| Wing | |||||
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| Intermediate | |||||
| Advanced | |||||
| Release Date | March 2023 | August 2023 | August 2023 | August 2023 | May 2024 |
Foil outline overlay
