
Family Sirus Chord 155 mm Brand’s category Pump / dock Disciplines pump, sup, prone, downwind, wing, kite Team / Carbon HM · 2026
The closest current wings from other brands — every one within ±5% of area and ±8% of aspect ratio, ranked closest first. The closest with a traced outline, the Armstrong APF (All-round Pump Foil) APF1350 (#2), is already drawn over it. Select a numbered wing to draw it — up to three at a time.
The Sirus V3 Atmo runs 9 sizes, 1,150–2,350 cm², and changes proportion as it grows: aspect ratio runs 9.3 at one end of the range to 15.0 at the other, so its sizes differ in shape as well as in area.
Its 1,240 mm span is 13% wider than typical for the area — the median across the 88 current wings within 10% of its size is 1,098 mm.
Projected and flat area run 3–8% apart. A marked area is one whose brand does not state which it publishes, so a comparison inside the area tolerance may be comparing unlike figures.
| Brand | Wing | Area cm² | Δ area | Aspect ratio | Δ AR | Span mm | Band |
|---|---|---|---|---|---|---|---|
| North | Sonar DW1400 | 1,400 | +0.0% | 11.20 | +1.8% | 1,250 | High aspect |
| Armstrong | APF (All-round Pump Foil) APF1350 | 1,350 | -3.6% | 10.70 | -2.7% | 1,202 | High aspect |
| RRD | Universal Moonfish Front Wing Y30 1350 | 1,350 | -3.6% | 10.70 | -2.7% | 1,200 | High aspect |
| F-One | JAM HM Carbon 1400 | 1,400 | +0.0% | 10.30 | -6.4% | 1,200 | High aspect |
| KT Foiling | Atlas 1340 | 1,340 | -4.3% | 11.10 | +0.9% | 1,220 | High aspect |
| Naish | Excalibur HA Front Wing 1344 | 1,344 | -4.0% | 10.20 | -7.3% | 1,170 | High aspect |
| Family | Sirus |
|---|---|
| Size | L |
| Area, cm² | 1,400 |
| Area basis | unknown |
| Span, mm | 1,240 |
| Chord, mm | 155 |
| Aspect ratio | 11.00 |
| Band | High aspect |
| Brand’s category | Pump / dock |
| Disciplines | pump, sup, prone, downwind, wing, kite |
| Construction | Team / Carbon HM |
| 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.
Data current to August 2026. Every figure above is the manufacturer's published claim, converted to comparable units.