UNDERWOOD
ESP DUFOUR 31Sail number ESP/ESP5122_C
GPH
744.2
OSN
720.4
LOA
9.32 m
Displacement
5098 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.5418
Medium
0.7401
High
0.8637
Triple Offshore
Low
0.6965
Medium
0.9136
High
1.0272
Boat Specifications
Dimensions
- Length overall
- 9.32 m
- Beam
- 3.29 m
- Draft
- 1.82 m
- Displacement
- 5098 kg
- Crew weight
- 350 kg
- Wetted surface
- 21.07 m²
Sails
- Mainsail
- 19.83 m²
- Genoa
- 33.03 m²
- Spinnaker
- 70.88 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- DUFOUR 31
- Builder
- TAYLOR
- Designer
- M. DUFOUR
- Year built
- 1975
- Stability index
- 123.7
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.27 | 4.53 | 4.72 | 4.67 | 4.76 | 4.62 | 4.22 | 3.63 |
| 8 | 5.03 | 5.31 | 5.54 | 5.59 | 5.76 | 5.64 | 5.17 | 4.58 |
| 10 | 5.65 | 5.9 | 6.08 | 6.21 | 6.33 | 6.28 | 6.01 | 5.41 |
| 12 | 6.02 | 6.2 | 6.35 | 6.5 | 6.65 | 6.61 | 6.43 | 6.09 |
| 14 | 6.2 | 6.37 | 6.53 | 6.62 | 6.92 | 6.9 | 6.72 | 6.45 |
| 16 | 6.29 | 6.47 | 6.68 | 6.78 | 7.15 | 7.19 | 7.02 | 6.72 |
| 20 | 6.34 | 6.54 | 6.87 | 7.1 | 7.4 | 7.65 | 7.6 | 7.29 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 44.1° | 2.77 | 147.8° | 3.15 |
| 8 | 42.3° | 3.33 | 152° | 3.97 |
| 10 | 41.8° | 3.75 | 152° | 4.7 |
| 12 | 42° | 4.08 | 158.3° | 5.38 |
| 14 | 41.2° | 4.27 | 172.7° | 5.93 |
| 16 | 40.6° | 4.36 | 179° | 6.33 |
| 20 | 40.8° | 4.39 | 179° | 6.85 |
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