Sroka S-Foil 810 S HA 810 S HA hydrofoil front wing: 810 cm², 780 mm span, aspect ratio 7.90, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from Sroka'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 |
|---|---|---|---|---|---|---|---|
| KT Foiling | Halo 800 Halo 800 | 800 | -1.2% | 8.00 | +1.3% | 800 | C2 Mid-low aspect |
| Armstrong | MA Mk II (Mid Aspect) MA790 | 790 | -2.5% | 8.00 | +1.3% | 817 | C2 Mid-low aspect |
| Takuma | Kujira II Front Wing Kujira II 800 | 800 | -1.2% | 7.70 | -2.5% | 784 | C2 Mid-low aspect |
| Code Foils | X Series Front Wing 810X | 810 | +0.0% | 8.20 | +3.8% | 814 | C2 Mid-low aspect |
| GONG | Ypra Surf Carve V3 Atmo L | 820 | +1.2% | 8.20 | +3.8% | 820 | C2 Mid-low aspect |
| Unifoil | Aggression 130 Aggression 130 | 838 | +3.5% | 8.10 | +2.5% | 825 | C2 Mid-low aspect |
| F-One | SK8 HM Carbon (T2) SK8 HM CARBON 850 | 850 | +4.9% | 8.00 | +1.3% | 825 | C2 Mid-low aspect |
| Takoon | XS-Glide Front Wing 820 | 820 | +1.2% | 7.50 | -5.1% | 786 | C2 Mid-low aspect |
| GONG | Fluid H V3 FG S | 810 | +0.0% | 8.40 | +6.3% | 820 | C2 Mid-low aspect |
| Sabfoil | 808 Balz Muller Limited 808 Balz Müller Limited | 792 | -2.2% | 8.26 | +4.6% | 808 | C2 Mid-low aspect |
| Sabfoil | Blackbird 805 Balz Muller Signature Blackbird 805 | 792 | -2.2% | 8.30 | +5.1% | 805 | C2 Mid-low aspect |
| Cabrinha | Whippit 850 | 850 | +4.9% | 8.10 | +2.5% | 830 | C2 Mid-low aspect |
| Duotone | Blitz D/LAB 800 | 800 | -1.2% | 8.40 | +6.3% | 810 | C2 Mid-low aspect |
| GONG | Curve H V3 FG S | 820 | +1.2% | 8.40 | +6.3% | 830 | C2 Mid-low aspect |
| Naish | Siren MA Front Wing Siren 800 | 800 | -1.2% | 8.41 | +6.5% | 820 | C2 Mid-low aspect |
| ENSIS | INFINITY ACE Front Wing 840 | 840 | +3.7% | 7.50 | -5.1% | 795 | C2 Mid-low aspect |
| Takoon | Flare Front Wing 850 | 850 | +4.9% | 8.30 | +5.1% | 840 | C2 Mid-low aspect |
| Family | S-Foil High Aspect (HA) |
|---|---|
| Size | 810 S HA |
| Area, cm² | 810 |
| Area basis | unknown |
| Span, mm | 780 |
| Chord, mm | 137 |
| Aspect ratio | 7.90 |
| Band | C2 Mid-low aspect |
| Brand files it under | Glide / high aspect |
| Disciplines | wing, race, kite, tow, sup, pump |
| Construction | high-modulus carbon (Carbon HM) |
| Model year | 2024-2026 |
| Source | manufacturer |
The brand publishes this aspect ratio, but its own span and area (span² ÷ area) give a figure 5–10% away. The published number is kept and marked.
See Sroka 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.