Etap 21i
Etap Yachting · designed by Mortain & Mavrikios · 1997
tandem keelsBermuda rigBelgium
The Etap 21i is a 22-foot bermuda rig sailboat designed by Mortain & Mavrikios and built by Etap Yachting, first launched in 1997.
General
| Builder | Etap Yachting |
|---|---|
| Designer | Mortain & Mavrikios |
| Years built | 1997 |
| Hull type | tandem keels |
| Rig type | Bermuda rig |
| Construction | — |
| Origin | Belgium |
Dimensions
| LOA | 21.52 ft6.56 m |
|---|---|
| LWL | 20.01 ft6.10 m |
| Beam | 8.17 ft2.49 m |
| Draft (max) | 2.30 ft0.70 m |
| Displacement | 2,712 lb1,230 kg |
| Ballast | 772 lb350 kg |
| Sail Area | 257 ft²23.9 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 21.14 Performance / racer — powered up
Ballast / Displacement 28.5 % Higher = stiffer / more sail-carrying power
Displacement / Length 151 Light
Comfort Ratio 12.5 Racing / light coastal
Capsize Screening 2.34 Better suited to coastal use (> 2.0)
Hull Speed 6.0 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
$15,500 typical range $12,500 – $18,500
⚠ 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.