Description
Turns like a surfboard, flies at low speed
The Sonar Surf series is designed for a very low stall speed, effortless pumping and surf-style turning: roll control, stability and agility to draw powerful, tight rail-to-rail turns, with forgiving recovery that gets back up to speed in one or two pumps and makes the most of even the smallest waves. The SF680 is a small size in the series, for light riders or fast surfing.
Area 680 cm² · Span 790 mm · Aspect ratio 9.2 · Pre-preg carbon
Who it's for
- Prone surf foil, assisted foil, parawing and wave wing riders.
- Anyone looking for surf-style turns and a very low stall speed.
What makes it special
01 With S185 stabilizer
North recommends it with the S185 stabilizer.
02 Low stall speed
Keeps flying at very low speed.
03 Effortless pumping
Stays in flight with very little pumping.
04 Surf-style turning
Smooth rail-to-rail turns and surf hits on the wave.
05 Stable glide
Glides with calm, stable flight.
Where it shines: freeride wing (advanced riders); wave wing (advanced riders); wing downwind (advanced riders); tow-in surfing (big waves); prone surfing in big waves (advanced riders).
Surf series (SF)
| WING | AREA | SPAN | ASPECT RATIO |
|---|---|---|---|
| SF530 | 530 cm² | 750 mm | 10.6 |
| SF680 | 680 cm² | 790 mm | 9.2 |
| SF830 | 830 cm² | 865 mm | 9.0 |
| SF930 | 930 cm² | 900 mm | 8.8 |
| SF1080 | 1080 cm² | 915 mm | 7.8 |
| SF1230 | 1230 cm² | 930 mm | 7.1 |
Official North data for the Surf series (SF); this wing in bold. Check the selector for sizes available in store.
Technology and construction
- Construction: pre-preg carbon: stiffness and direct response.
- Hardware: titanium screws, light and corrosion-free.
- Sonar system: compatible with all Sonar aluminium and carbon fuselages.
- Includes: front wing, cover and D set (3 M8 x 25 screws).
See it in action
Which one to choose?
- Sonar SF530 (530 cm²): smaller, faster and looser.
- Sonar SF830 (830 cm²): bigger, takes off earlier and gives more stability.
Pair it with: S145v2 stabilizer, S185 stabilizer, S215 stabilizer, Sonar carbon fuselage and D replacement screws.
Frequently asked questions
Which stabilizer should I use?+
According to North's compatibility chart: S125v2, S145v2, S185, S215, S178v2 (advanced riders), S122 (advanced riders) or S142 (advanced riders).
Which screws does it come with?+
It comes with the D set (3 M8 x 25 screws). It is mounted with a Torx T40 key and 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 their aluminium and carbon fuselages.
Which disciplines is it for?+
According to North: freeride wing (advanced riders); wave wing (advanced riders); wing downwind (advanced riders); tow-in surfing (big waves); prone surfing in big waves (advanced riders).
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