Tartan 33
Tartan Marine · designed by Sparkman & Stephens · 1979
Scheel keelFractional rigged sloopUnited States
The Tartan 33 is a 34-foot fractional rigged sloop sailboat designed by Sparkman & Stephens and built by Tartan Marine, first launched in 1979.
General
| Builder | Tartan Marine |
|---|---|
| Designer | Sparkman & Stephens |
| Years built | 1979 |
| Hull type | Scheel keel |
| Rig type | Fractional rigged sloop |
| Construction | fiberglass |
| Origin | United States |
Dimensions
| LOA | 33.67 ft10.26 m |
|---|---|
| LWL | 28.83 ft8.79 m |
| Beam | 10.96 ft3.34 m |
| Draft (max) | 4.56 ft1.39 m |
| Displacement | 10,000 lb4,536 kg |
| Ballast | 4,400 lb1,996 kg |
| Sail Area | 531 ft²49.3 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 18.30 Cruiser — good all-round performance
Ballast / Displacement 44.0 % Higher = stiffer / more sail-carrying power
Displacement / Length 186 Light
Comfort Ratio 21.0 Coastal cruiser
Capsize Screening 2.03 Better suited to coastal use (> 2.0)
Hull Speed 7.2 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
$31,500 typical range $25,000 – $38,000
⚠ 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.
