ALEPH II
ESP FIRST 31.7Sail number ESP/ESP5746_C
GPH
661.5
OSN
640.2
LOA
9.61 m
Displacement
3712 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6043
Medium
0.8365
High
0.966
Triple Offshore
Low
0.7826
Medium
1.0289
High
1.1584
Boat Specifications
Dimensions
- Length overall
- 9.61 m
- Beam
- 3.21 m
- Draft
- 1.93 m
- Displacement
- 3712 kg
- Crew weight
- 420 kg
- Wetted surface
- 21.42 m²
Sails
- Mainsail
- 25.94 m²
- Genoa
- 30.7 m²
- Spinnaker
- 64.2 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- FIRST 31.7
- Builder
- BENETEAU
- Designer
- FINOT
- Year built
- 1998
- Stability index
- 121.5
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.93 | 5.22 | 5.46 | 5.39 | 5.25 | 5.08 | 4.58 | 3.85 |
| 8 | 5.87 | 6.16 | 6.37 | 6.35 | 6.38 | 6.23 | 5.68 | 4.91 |
| 10 | 6.5 | 6.7 | 6.84 | 6.89 | 6.99 | 6.91 | 6.57 | 5.86 |
| 12 | 6.8 | 6.96 | 7.12 | 7.21 | 7.39 | 7.32 | 7.06 | 6.62 |
| 14 | 6.92 | 7.11 | 7.36 | 7.46 | 7.81 | 7.77 | 7.46 | 7.07 |
| 16 | 6.97 | 7.18 | 7.54 | 7.75 | 8.17 | 8.24 | 7.92 | 7.44 |
| 20 | 6.99 | 7.23 | 7.69 | 8.21 | 8.6 | 9.11 | 8.98 | 8.33 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.3° | 3.21 | 145.7° | 3.33 |
| 8 | 41.8° | 3.9 | 150.2° | 4.26 |
| 10 | 40.8° | 4.44 | 151.4° | 5.08 |
| 12 | 39.3° | 4.78 | 157.4° | 5.82 |
| 14 | 38.4° | 4.9 | 169.4° | 6.42 |
| 16 | 38.2° | 4.96 | 178.4° | 6.9 |
| 20 | 38.7° | 4.94 | 177.5° | 7.63 |
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