Cal 39
Jensen Marine/Cal Yachts · designed by C. William Lapworth · 1970
fin keelBermuda rigUnited States
The Cal 39 is a 39-foot bermuda rig sailboat designed by C. William Lapworth and built by Jensen Marine/Cal Yachts, first launched in 1970.
General
| Builder | Jensen Marine/Cal Yachts |
|---|---|
| Designer | C. William Lapworth |
| Years built | 1970 |
| Hull type | fin keel |
| Rig type | Bermuda rig |
| Construction | fiberglass |
| Origin | United States |
Dimensions
| LOA | 38.69 ft11.79 m |
|---|---|
| LWL | 31.25 ft9.53 m |
| Beam | 11.67 ft3.56 m |
| Draft (max) | 6.00 ft1.83 m |
| Displacement | 14,600 lb6,622 kg |
| Ballast | 6,600 lb2,994 kg |
| Sail Area | 738 ft²68.6 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 19.77 Cruiser — good all-round performance
Ballast / Displacement 45.2 % Higher = stiffer / more sail-carrying power
Displacement / Length 214 Moderate
Comfort Ratio 25.6 Coastal cruiser
Capsize Screening 1.91 Suited to offshore passages (≤ 2.0)
Hull Speed 7.5 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
$39,500 typical range $31,500 – $47,500
⚠ 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.