Sonata 26
Investigator Yachts · designed by Gary Mull · 1980
lifting keelFractional rigged sloopUnited States
The Sonata 26 is a 26-foot fractional rigged sloop sailboat designed by Gary Mull and built by Investigator Yachts, first launched in 1980.
General
| Builder | Investigator Yachts |
|---|---|
| Designer | Gary Mull |
| Years built | 1980 |
| Hull type | lifting keel |
| Rig type | Fractional rigged sloop |
| Construction | fiberglass |
| Origin | United States |
Dimensions
| LOA | 26.25 ft8.00 m |
|---|---|
| LWL | 19.75 ft6.02 m |
| Beam | 8.20 ft2.50 m |
| Draft (max) | 5.09 ft1.55 m |
| Displacement | 2,822 lb1,280 kg |
| Ballast | 500 lb227 kg |
| Sail Area | 277 ft²25.7 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 22.19 Performance / racer — powered up
Ballast / Displacement 17.7 % Higher = stiffer / more sail-carrying power
Displacement / Length 164 Light
Comfort Ratio 12.2 Racing / light coastal
Capsize Screening 2.32 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
$19,500 typical range $15,500 – $23,500
⚠ 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.
