Dolphin 15 Senior
Silverline Boats · designed by Glenn Corcorran · 1964
daggerboardLateen rigUnited States
The Dolphin 15 Senior is a 15-foot lateen rig sailboat designed by Glenn Corcorran and built by Silverline Boats, first launched in 1964.
General
| Builder | Silverline Boats |
|---|---|
| Designer | Glenn Corcorran |
| Years built | 1964 |
| Hull type | daggerboard |
| Rig type | Lateen rig |
| Construction | fiberglass |
| Origin | United States |
Dimensions
| LOA | 14.50 ft4.42 m |
|---|---|
| LWL | 13.50 ft4.11 m |
| Beam | 5.08 ft1.55 m |
| Draft (max) | 1.54 ft0.47 m |
| Displacement | 170 lb77 kg |
| Ballast | —— |
| Sail Area | 85 ft²7.9 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 44.32 Performance / racer — powered up
Displacement / Length 31 Ultralight
Comfort Ratio 2.2 Racing / light coastal
Capsize Screening 3.67 Better suited to coastal use (> 2.0)
Hull Speed 4.9 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
$5,500 typical range $4,500 – $6,500
⚠ 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.
