North Sonar SF530 SF530 hydrofoil front wing: 530 cm², 750 mm span, aspect ratio 10.60, 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 |
|---|---|---|---|---|---|---|---|
| GONG | Ypra Race Micro V3 Atmo 540 cm² | 540 | +1.9% | 10.40 | -1.9% | 749 | C4 High aspect |
| Naish | Excalibur HA Front Wing Excalibur 544 | 544 | +2.6% | 10.20 | -3.8% | 745 | C4 High aspect |
| Axis | ART PRO ART PRO 751 | 518 | -2.3% | 11.10 | +4.7% | 751 | C4 High aspect |
| Takoon | Flash Front Wing 530 | 530 | +0.0% | 9.80 | -7.5% | 720 | C4 High aspect |
| GONG | Ypra Race V3 540 cm² | 540 | +1.9% | 9.90 | -6.6% | 730 | C4 High aspect |
| Family | Sonar SF (Surf Series) |
|---|---|
| Size | SF530 |
| Area, cm² | 530 |
| Area basis | unknown |
| Span, mm | 750 |
| Chord, mm | — |
| Aspect ratio | 10.60 |
| Band | C4 High 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.