Nacra 20
Nacra Sailing · designed by Morrelli & Melvin · 1998
twin daggerboardssport catamaranNetherlands
The Nacra 20 is a 20-foot sport catamaran sailboat designed by Morrelli & Melvin and built by Nacra Sailing, first launched in 1998.
General
| Builder | Nacra Sailing |
|---|---|
| Designer | Morrelli & Melvin |
| Years built | 1998 |
| Hull type | twin daggerboards |
| Rig type | sport catamaran |
| Construction | — |
| Origin | Netherlands |
Dimensions
| LOA | 20.00 ft6.10 m |
|---|---|
| LWL | —— |
| Beam | 8.50 ft2.59 m |
| Draft (max) | 3.18 ft0.97 m |
| Displacement | 390 lb177 kg |
| Ballast | —— |
| Sail Area | 256 ft²23.8 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 76.73 Performance / racer — powered up
Capsize Screening 4.65 Better suited to coastal use (> 2.0)
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
$13,500 typical range $11,000 – $16,000
⚠ 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.
