Duotone Crest D/LAB 675 hydrofoil front wing: 675 cm², 790 mm span, aspect ratio 9.30, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from Duotone'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 SF680 SF680 | 680 | +0.7% | 9.20 | -1.1% | 790 | C3 Mid aspect |
| Cabrinha | Fusion H-Series MkII H700 | 700 | +3.7% | 9.49 | +2.0% | 815 | C3 Mid aspect |
| Takoon | Flash Front Wing 680 | 680 | +0.7% | 9.80 | +5.4% | 815 | C4 High aspect |
| F-One | EAGLE HM Carbon EAGLE 690 | 690 | +2.2% | 9.70 | +4.3% | 820 | C4 High aspect |
| Axis | Surge Surge 780 | 643 | -4.7% | 9.48 | +1.9% | 780 | C3 Mid aspect |
| AFS | Pure Fuselink Foil (monobloc front wing + fuselage) Pure 700 | 700 | +3.7% | 9.60 | +3.2% | 820 | C4 High aspect |
| AFS | Silk V2 Front Wing Silk 650 | 650 | -3.7% | 9.00 | -3.2% | 765 | C3 Mid aspect |
| GONG | Ypra Race V3 670 cm² | 670 | -0.7% | 9.90 | +6.5% | 820 | C4 High aspect |
| Levitaz | Front Wing FS 680 FS 680 | 680 | +0.7% | 8.70 | -6.5% | 770 | C3 Mid aspect |
| GONG | Ypra Slalom V3 Atmo S | 700 | +3.7% | 8.90 | -4.3% | 790 | C3 Mid aspect |
| Armstrong | HA (High Aspect) HA680 | 680 | +0.7% | 10.00 | +7.5% | 828 | C4 High aspect |
| KT Foiling | Nomad 700 Nomad 700 | 700 | +3.7% | 8.70 | -6.5% | 780 | C3 Mid aspect |
| Axis | ART v2 ART v2 819 | 647 | -4.1% | 9.98 | +7.3% | 820 | C4 High aspect |
| Family | Crest |
|---|---|
| Size | 675 |
| Area, cm² | 675 |
| Area basis | unknown |
| Span, mm | 790 |
| Chord, mm | — |
| Aspect ratio | 9.30 |
| Band | C3 Mid aspect |
| Brand files it under | Surf / carve |
| Disciplines | wing, prone, tow |
| Construction | D/LAB |
| 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 Duotone 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.