North Sonar SF1230 SF1230 hydrofoil front wing: 1,230 cm², 930 mm span, aspect ratio 7.10, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from North's own published specifications.
Projected and flat area run 3–8% apart. A marked area is one whose brand does not state which it publishes, so a match inside the area tolerance may be comparing unlike figures.
| Brand | Wing | Area cm² | Δ area | Aspect ratio | Δ AR | Span mm | Band |
|---|---|---|---|---|---|---|---|
| Takoon | X-Glide V2 Front Wing 1250 | 1,250 | +1.6% | 7.20 | +1.4% | 950 | C2 Mid-low aspect |
| Axis | HPS (High Performance Speed) HPS 930 | 1,214 | -1.3% | 7.34 | +3.4% | 930 | C2 Mid-low aspect |
| GONG | Ascent V3 XL | 1,290 | +4.9% | 7.00 | -1.4% | 950 | C2 Mid-low aspect |
| Axis | PNG (Pump and Glide) PNG 910 | 1,267 | +3.0% | 6.80 | -4.2% | 910 | C2 Mid-low aspect |
| AFS | Evo Front Wing 1250 | 1,250 | +1.6% | 7.60 | +7.0% | 970 | C2 Mid-low aspect |
| Sroka | S-Foil 1190 L HA 1190 L HA | 1,190 | -3.3% | 7.50 | +5.6% | 910 | C2 Mid-low aspect |
| Family | Sonar SF (Surf Series) |
|---|---|
| Size | SF1230 |
| Area, cm² | 1,230 |
| Area basis | unknown |
| Span, mm | 930 |
| Chord, mm | — |
| Aspect ratio | 7.10 |
| Band | C2 Mid-low aspect |
| Brand files it under | Surf / carve |
| Disciplines | prone, wing, downwind, pump, wake |
| Construction | carbon pre-preg |
| Model year | 2026 |
| Source | manufacturer |
The brand's published aspect ratio agrees with its own span and area (span² ÷ area) to within 5%, so the figure is confirmed.
See North on the plot →Data current to August 2026. Fast Bobby is the researcher, never the reviewer: every figure above is the manufacturer's published claim, converted to comparable units, and nothing here is a riding impression.