F-One EAGLE HM Carbon EAGLE 990 hydrofoil front wing: 990 cm², 970 mm span, aspect ratio 9.50, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from F-One'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 |
|---|---|---|---|---|---|---|---|
| Code Foils | S Series Front Wing 980S | 980 | -1.0% | 9.50 | +0.0% | 965 | C3 Mid aspect |
| Unifoil | Evolution 155 Evolution 155 | 1,000 | +1.0% | 9.40 | -1.1% | 968 | C3 Mid aspect |
| Armstrong | HA (High Aspect) HA980 | 980 | -1.0% | 9.68 | +1.9% | 974 | C4 High aspect |
| KT Foiling | Nomad 980 Nomad 980 | 980 | -1.0% | 9.20 | -3.2% | 950 | C3 Mid aspect |
| Axis | Surge Surge 950 | 949 | -4.1% | 9.52 | +0.2% | 950 | C4 High aspect |
| Lift Foils | 150 High Aspect X Front Wing 150 | 968 | -2.2% | 10.10 | +6.3% | 991 | C4 High aspect |
| Axis | ART (AXIS Research Team) ART 999 | 1,038 | +4.8% | 9.90 | +4.2% | 999 | C4 High aspect |
| Axis | ART v2 ART v2 999 | 1,038 | +4.8% | 9.90 | +4.2% | 1,000 | C4 High aspect |
| AFS | Silk V2 Front Wing Silk 950 | 950 | -4.0% | 9.00 | -5.3% | 925 | C3 Mid aspect |
| Sabfoil | Blackbird Razor 977 Blackbird Razor 977 | 953 | -3.7% | 10.20 | +7.4% | 977 | C4 High aspect |
| Naish | Excalibur HA Front Wing Excalibur 944 | 944 | -4.6% | 10.20 | +7.4% | 982 | C4 High aspect |
| Sabfoil | Razor PRO 975 Razor PRO 975 | 942 | -4.8% | 10.20 | +7.4% | 980 | C4 High aspect |
| Family | Eagle |
|---|---|
| Size | EAGLE 990 |
| Area, cm² | 990 |
| Area basis | unknown |
| Span, mm | 970 |
| Chord, mm | — |
| Aspect ratio | 9.50 |
| Band | C3 Mid aspect |
| Brand files it under | Downwind |
| Disciplines | downwind, wing, prone, sup |
| Construction | HM carbon |
| 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 F-One 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.