GONG Sirus V3 Atmo L hydrofoil front wing: 1,442 cm², 1,160 mm span, aspect ratio 9.30, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from GONG'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 |
|---|---|---|---|---|---|---|---|
| North | Sonar HA1450 HA1450 | 1,450 | +0.6% | 10.00 | +7.5% | 1,200 | C4 High aspect |
| Axis | Spitfire Spitfire 1100 | 1,423 | -1.3% | 8.66 | -6.9% | 1,100 | C3 Mid aspect |
| Takoon | Flare Front Wing 1400 | 1,400 | -2.9% | 8.60 | -7.5% | 1,100 | C3 Mid aspect |
| Takuma | Kujira II Front Wing Kujira II 1400 | 1,400 | -2.9% | 8.60 | -7.5% | 1,096 | C3 Mid aspect |
| Family | Sirus |
|---|---|
| Size | L |
| Area, cm² | 1,442 |
| Area basis | unknown |
| Span, mm | 1,160 |
| Chord, mm | 170 |
| Aspect ratio | 9.30 |
| Band | C3 Mid aspect |
| Brand files it under | Pump / dock |
| Disciplines | pump, sup, prone, downwind, wing, kite |
| Construction | Perf / fiberglass |
| 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 GONG 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.