Neptunkryssare
designed by Lage Eklund · 1938
keelboat
The Neptunkryssare is a 30-foot sailboat designed by Lage Eklund, first launched in 1938.
General
| Builder | — |
|---|---|
| Designer | Lage Eklund |
| Years built | 1938 |
| Hull type | keelboat |
| Rig type | — |
| Construction | — |
| Origin | — |
Dimensions
| LOA | 29.53 ft9.00 m |
|---|---|
| LWL | 19.19 ft5.85 m |
| Beam | 6.30 ft1.92 m |
| Draft (max) | 3.94 ft1.20 m |
| Displacement | 2,535 lb1,150 kg |
| Ballast | 1,190 lb540 kg |
| Sail Area | 204 ft²19.0 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 17.56 Cruiser — good all-round performance
Ballast / Displacement 46.9 % Higher = stiffer / more sail-carrying power
Displacement / Length 160 Light
Comfort Ratio 15.1 Racing / light coastal
Capsize Screening 1.85 Suited to offshore passages (≤ 2.0)
Hull Speed 5.9 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
$21,000 typical range $17,000 – $25,000
⚠ 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.
