RRD Flying Fish HA Front Wing Y31 900 hydrofoil front wing: 900 cm², 1,150 mm span, aspect ratio 14.70, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from RRD'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 | Veloce DW V3 Atmo M | 900 | +0.0% | 14.10 | -4.1% | 1,130 | C5 Very high aspect |
| AFS | Ultra Front Wing Ultra 900 | 900 | +0.0% | 14.00 | -4.8% | 1,120 | C5 Very high aspect |
| Duotone | Hyperglide D/LAB 880 | 880 | -2.2% | 14.20 | -3.4% | 1,130 | C5 Very high aspect |
| KT Foiling | Solus 930 Solus 930 | 930 | +3.3% | 14.00 | -4.8% | 1,140 | C5 Very high aspect |
| Family | FLYING FISH HA |
|---|---|
| Size | 900 |
| Area, cm² | 900 |
| Area basis | unknown |
| Span, mm | 1,150 |
| Chord, mm | — |
| Aspect ratio | 14.70 |
| Band | C5 Very high aspect |
| Brand files it under | Downwind |
| Disciplines | downwind, pump |
| Construction | M40 and M60 high-modulus carbon prepreg |
| Model year | — |
| 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 RRD 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.