

North SURF SF1230Sonar Front Wing
We’ve engineered our Sonar Surf Series for super low stall speeds, effortless pumping and surf-style carving. Ideal for riders wanting more from surf and downwind swells (with or without a wing). The foils insensitivity to angle of attack change forgiveness means you don’t
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have to be an expert or have perfect pumping technique. A refined balance of roll stability and manoeuvrability gives you confidence during pumping and take-offs, and the ability to initiate powerful rail-to-rail carves. Push it harder, lip stall and lay down banking turns, knowing tip ventilation is a thing of the past. Reduced distance between the mast and front wing makes for faster, tighter pivoting turns. We’ve kept the span similar between the three sizes, providing the same ride feel across the entire size range. The SF promises that 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 Sonar SF Series. At one, with it all.
product code: 85004.230093
About the technology
Features
- Recommended with S215 Stabilizer
- Super low stall speed
- Effortless pumping
- Surf-style turning (smooth rail to rail and surf yaw snap)
- Forgiving and accessible for faster progression
Materials
- Pre-Preg Carbon
- Titanium Screws
Front Wing, Cover, Titanium Screw Pack F (M8x30mm)
Size chart


Progress faster
The SF-Wings are easy to pump but still manageable to roll from rail to rail. The area-distribution across the span is tuned to the rolling ability of the wing - less area in the tips helps the water to get away.
Effortless pumping
The foil is super forgiving on angle of attack change – you can pump aggressively or just do a flicker and you can glide forever. When you’re about to stall
Composed glide
give it one pump
Responsive turning
then go on forever again. Because it’s so forgivingMatch with a Surf or Glide Series Stabilizer
you can take out a much smaller surf wing size than you’d expect (for wing surfing). This is appealing if you’re trying to perfect your turns and wave riding. You’re carrying around a smaller foil which is more responsive.Progress faster
Moderate anhedral rondure combines with a gentle back-swept plan shape combine to create a good balance of roll stability
Effortless pumping
for confidence during pumping and take-offs
Composed glide
and manoeuvrability
Responsive turning
for initiating turns with ease.
Match with a Surf or Glide Series Stabilizer
To maintain an efficient window of operation at the lowest pumping speed



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SONAR SF SERIES
At one with it all

BEHIND THE DESIGN
SONAR SF SERIES
Discover what low-speed glide and surf-style performance bring to your ride with North Foil Designer Uli Sommerlatt and Brand Director Mike Raper.