Nautor 43
Oy Nautor AB · designed by Sparkman & Stephens · 1976
fin keelMasthead ketchFinland
The Nautor 43 is a 32-foot masthead ketch sailboat designed by Sparkman & Stephens and built by Oy Nautor AB, first launched in 1976.
General
| Builder | Oy Nautor AB |
|---|---|
| Designer | Sparkman & Stephens |
| Years built | 1976 |
| Hull type | fin keel |
| Rig type | Masthead ketch |
| Construction | — |
| Origin | Finland |
Dimensions
| LOA | 31.50 ft9.60 m |
|---|---|
| LWL | 31.50 ft9.60 m |
| Beam | 13.85 ft4.22 m |
| Draft (max) | 5.91 ft1.80 m |
| Displacement | 33,069 lb15,000 kg |
| Ballast | 9,040 lb4,100 kg |
| Sail Area | 832 ft²77.3 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 12.92 Under-canvassed — heavy-air / motorsailing
Ballast / Displacement 27.3 % Higher = stiffer / more sail-carrying power
Displacement / Length 472 Heavy — bluewater displacement
Comfort Ratio 49.0 Heavy offshore
Capsize Screening 1.73 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
$27,000 typical range $21,500 – $32,500
⚠ 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.
