J/35
J/Boats · designed by Rod Johnstone · 1983
fin keelBermuda rigUnited States
The J/35 is a 36-foot bermuda rig sailboat designed by Rod Johnstone and built by J/Boats, first launched in 1983.
General
| Builder | J/Boats |
|---|---|
| Designer | Rod Johnstone |
| Years built | 1983 |
| Hull type | fin keel |
| Rig type | Bermuda rig |
| Construction | — |
| Origin | United States |
Dimensions
| LOA | 35.50 ft10.82 m |
|---|---|
| LWL | 30.00 ft9.14 m |
| Beam | 11.80 ft3.60 m |
| Draft (max) | 6.90 ft2.10 m |
| Displacement | 10,500 lb4,763 kg |
| Ballast | 4,400 lb1,996 kg |
| Sail Area | 636 ft²59.1 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 21.22 Performance / racer — powered up
Ballast / Displacement 41.9 % Higher = stiffer / more sail-carrying power
Displacement / Length 174 Light
Comfort Ratio 19.2 Racing / light coastal
Capsize Screening 2.16 Better suited to coastal use (> 2.0)
Hull Speed 7.3 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
$36,000 typical range $29,000 – $43,000
⚠ 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.
