North Sonar SF1080 SF1080 hydrofoil front wing: 1,080 cm², 915 mm span, aspect ratio 7.80, with its closest equivalents from other brands within ±5% area and ±8% aspect ratio. Figures from North'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 |
|---|---|---|---|---|---|---|---|
| Omen | Operator 1050 Operator 1050 | 1,050 | -2.8% | 7.70 | -1.3% | 900 | C2 Mid-low aspect |
| F-One | SEVEN SEAS Carbon SEVEN SEAS 1100 | 1,100 | +1.9% | 8.00 | +2.6% | 940 | C2 Mid-low aspect |
| Takuma | Kujira II Front Wing Kujira II 1100 | 1,100 | +1.9% | 8.00 | +2.6% | 938 | C2 Mid-low aspect |
| F-One | SK8 HM Carbon (T2) SK8 HM CARBON 1050 | 1,050 | -2.8% | 8.00 | +2.6% | 915 | C2 Mid-low aspect |
| Code Foils | X Series Front Wing 1085X | 1,085 | +0.5% | 8.20 | +5.1% | 940 | C2 Mid-low aspect |
| Unifoil | Aggression 170 Aggression 170 | 1,096 | +1.5% | 8.20 | +5.1% | 950 | C2 Mid-low aspect |
| Unifoil | Progression 170 Progression 170 | 1,097 | +1.6% | 8.30 | +6.4% | 953 | C2 Mid-low aspect |
| GONG | Curve H V3 FG L | 1,070 | -0.9% | 8.40 | +7.7% | 950 | C2 Mid-low aspect |
| Axis | Spitfire Spitfire 900 | 1,099 | +1.8% | 7.25 | -7.1% | 900 | C2 Mid-low aspect |
| Takoon | X-Glide V2 Front Wing 1050 | 1,050 | -2.8% | 7.20 | -7.7% | 870 | C2 Mid-low aspect |
| KT Foiling | Instinct 1120 Instinct 1120 | 1,120 | +3.7% | 8.40 | +7.7% | 971 | C2 Mid-low aspect |
| Family | Sonar SF (Surf Series) |
|---|---|
| Size | SF1080 |
| Area, cm² | 1,080 |
| Area basis | unknown |
| Span, mm | 915 |
| Chord, mm | — |
| Aspect ratio | 7.80 |
| Band | C2 Mid-low aspect |
| Brand files it under | Surf / carve |
| Disciplines | prone, wing, downwind, pump, wake |
| Construction | carbon pre-preg |
| 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 North 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.