Aloha 27
Ouyang Boat Works · designed by Robert Perry · 1979
fin keelFractional rigged sloopCanada
The Aloha 27 is a 27-foot fractional rigged sloop sailboat designed by Robert Perry and built by Ouyang Boat Works, first launched in 1979.
General
| Builder | Ouyang Boat Works |
|---|---|
| Designer | Robert Perry |
| Years built | 1979 |
| Hull type | fin keel |
| Rig type | Fractional rigged sloop |
| Construction | fiberglass |
| Origin | Canada |
Dimensions
| LOA | 26.50 ft8.08 m |
|---|---|
| LWL | 22.50 ft6.86 m |
| Beam | 9.42 ft2.87 m |
| Draft (max) | 4.33 ft1.32 m |
| Displacement | 5,200 lb2,359 kg |
| Ballast | 2,000 lb907 kg |
| Sail Area | 340 ft²31.6 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 18.12 Cruiser — good all-round performance
Ballast / Displacement 38.5 % Higher = stiffer / more sail-carrying power
Displacement / Length 204 Moderate
Comfort Ratio 17.1 Racing / light coastal
Capsize Screening 2.17 Better suited to coastal use (> 2.0)
Hull Speed 6.4 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
$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.
