Microsail
Jeanneau · designed by Gary Mull · 1980
lifting fin keelFractional rigged sloopUnited States
The Microsail is a 18-foot fractional rigged sloop sailboat designed by Gary Mull and built by Jeanneau, first launched in 1980.
General
| Builder | Jeanneau |
|---|---|
| Designer | Gary Mull |
| Years built | 1980 |
| Hull type | lifting fin keel |
| Rig type | Fractional rigged sloop |
| Construction | fiberglass |
| Origin | United States |
Dimensions
| LOA | 18.04 ft5.50 m |
|---|---|
| LWL | 16.40 ft5.00 m |
| Beam | 8.04 ft2.45 m |
| Draft (max) | 3.61 ft1.10 m |
| Displacement | 1,323 lb600 kg |
| Ballast | 507 lb230 kg |
| Sail Area | —— |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
Ballast / Displacement 38.3 % Higher = stiffer / more sail-carrying power
Displacement / Length 134 Light
Comfort Ratio 7.5 Racing / light coastal
Capsize Screening 2.93 Better suited to coastal use (> 2.0)
Hull Speed 5.4 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
$9,000 typical range $7,000 – $11,000
⚠ 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.
