Shields
Cape Cod Shipbuilding · designed by Olin Stephens · 1962
keelboatBermuda rigUnited States
The Shields is a 30-foot bermuda rig sailboat designed by Olin Stephens and built by Cape Cod Shipbuilding, first launched in 1962.
General
| Builder | Cape Cod Shipbuilding |
|---|---|
| Designer | Olin Stephens |
| Years built | 1962 |
| Hull type | keelboat |
| Rig type | Bermuda rig |
| Construction | fiberglass |
| Origin | United States |
Dimensions
| LOA | 30.21 ft9.21 m |
|---|---|
| LWL | 20.00 ft6.10 m |
| Beam | 6.42 ft1.96 m |
| Draft (max) | 4.75 ft1.45 m |
| Displacement | 4,600 lb2,087 kg |
| Ballast | 3,080 lb1,397 kg |
| Sail Area | 363 ft²33.7 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 21.00 Performance / racer — powered up
Ballast / Displacement 67.0 % Higher = stiffer / more sail-carrying power
Displacement / Length 257 Moderate
Comfort Ratio 25.9 Coastal cruiser
Capsize Screening 1.54 Suited to offshore passages (≤ 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
$23,000 typical range $18,500 – $27,500
⚠ 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.
