Tornado
sport catamaran
The Tornado is a 20-foot sport catamaran sailboat.
General
| Builder | — |
|---|---|
| Designer | — |
| Years built | — |
| Hull type | — |
| Rig type | sport catamaran |
| Construction | — |
| Origin | — |
Dimensions
| LOA | 20.01 ft6.10 m |
|---|---|
| LWL | 19.16 ft5.84 m |
| Beam | 10.10 ft3.08 m |
| Draft (max) | 2.49 ft0.76 m |
| Displacement | 342 lb155 kg |
| Ballast | —— |
| Sail Area | 236 ft²21.9 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 77.21 Performance / racer — powered up
Displacement / Length 22 Ultralight
Comfort Ratio 1.3 Racing / light coastal
Capsize Screening 5.78 Better suited to coastal use (> 2.0)
Hull Speed 5.9 kn Theoretical max displacement speed
How these numbers are calculated
- SA / Displacement
SA ÷ (Disp ÷ 64)^(2/3)— Power-to-weight. < 16 under-canvassed, 16–20 cruiser, > 20 racer.- Ballast / Displacement
Ballast ÷ Disp × 100— Stability/stiffness. Higher carries sail better.- Displacement / Length
Disp(lt) ÷ (0.01 · LWL)³— < 100 ultralight, 100–200 light, 200–300 moderate, > 300 heavy.- Comfort Ratio (Brewer)
Disp ÷ (0.65 · (0.7·LWL + 0.3·LOA) · Beam^1.33)— Motion in a seaway. Higher = more comfortable offshore.- Capsize Screening
Beam ÷ (Disp ÷ 64)^(1/3)— ≤ 2.0 favored for offshore; > 2.0 better for coastal use.- Hull Speed
1.34 · √LWL— Theoretical max displacement speed in knots.
Estimated price
$15,000 typical range $12,000 – $18,000
⚠ Rough estimate only — not market data. Derived from a simple model based on length and hull age; actual asking prices vary widely with condition, equipment, engine hours and location.
