Armstrong APF (All-round Pump Foil) APF1350 hydrofoil front wing: 1,350 cm², 1,202 mm span, aspect ratio 10.70, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from Armstrong'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 |
|---|---|---|---|---|---|---|---|
| RRD | Universal Moonfish Front Wing Y30 1350 | 1,350 | +0.0% | 10.70 | +0.0% | 1,200 | C4 High aspect |
| KT Foiling | Atlas 1340 Atlas 1340 | 1,340 | -0.7% | 11.10 | +3.7% | 1,220 | C4 High aspect |
| GONG | Veloce Free Fly (FF) V3 Atmo XXL | 1,300 | -3.7% | 10.60 | -0.9% | 1,170 | C4 High aspect |
| Naish | Excalibur HA Front Wing Excalibur 1344 | 1,344 | -0.4% | 10.20 | -4.7% | 1,170 | C4 High aspect |
| GONG | Trail V3 Atmo L | 1,350 | +0.0% | 10.10 | -5.6% | 1,170 | C4 High aspect |
| Axis | ART PRO ART PRO 1201 | 1,318 | -2.4% | 11.14 | +4.1% | 1,201 | C4 High aspect |
| AFS | Enduro Front Wing Enduro 1300 | 1,300 | -3.7% | 11.00 | +2.8% | 1,190 | C4 High aspect |
| GONG | Sirus V3 Atmo L | 1,400 | +3.7% | 11.00 | +2.8% | 1,240 | C4 High aspect |
| F-One | JAM HM Carbon JAM 1400 | 1,400 | +3.7% | 10.30 | -3.7% | 1,200 | C4 High aspect |
| Duotone | Glide 2.0 SLS 1350 | 1,350 | +0.0% | 9.90 | -7.5% | 1,160 | C4 High aspect |
| North | Sonar DW1400 DW1400 | 1,400 | +3.7% | 11.20 | +4.7% | 1,250 | C4 High aspect |
| GONG | Veloce V3 Atmo XXL | 1,300 | -3.7% | 10.10 | -5.6% | 1,150 | C4 High aspect |
| Family | APF |
|---|---|
| Size | APF1350 |
| Area, cm² | 1,350 |
| Area basis | unknown |
| Span, mm | 1,202 |
| Chord, mm | — |
| Aspect ratio | 10.70 |
| Band | C4 High aspect |
| Brand files it under | Pump / dock |
| Disciplines | pump |
| Construction | carbon |
| Model year | 2025-2026 |
| 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 Armstrong 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.