Mamba 31
Fin keel
The Mamba 31 is a 31-foot sailboat.
General
| Builder | — |
|---|---|
| Designer | — |
| Years built | — |
| Hull type | Fin keel |
| Rig type | — |
| Construction | — |
| Origin | — |
Dimensions
| LOA | 30.68 ft9.35 m |
|---|---|
| LWL | 26.25 ft8.00 m |
| Beam | 10.07 ft3.07 m |
| Draft (max) | 5.41 ft1.65 m |
| Displacement | 7,716 lb3,500 kg |
| Ballast | 3,527 lb1,600 kg |
| Sail Area | 506 ft²47.0 m² |
Design ratios
Computed from the specs above using the standard formulas. Try the sailboat calculators with your own numbers.
SA / Displacement 20.73 Performance / racer — powered up
Ballast / Displacement 45.7 % Higher = stiffer / more sail-carrying power
Displacement / Length 190 Light
Comfort Ratio 19.9 Racing / light coastal
Capsize Screening 2.04 Better suited to coastal use (> 2.0)
Hull Speed 6.9 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.
Average used price
€12,000 typical asking price, used market
Average second-hand price reported by goodboats.ru. Actual prices vary with condition, equipment and location.
Data sources: goodboats.ru