IDRA
ESP FIRST 31.7Sail number ESP/ESP11072_C
GPH
672.2
OSN
648.7
LOA
9.61 m
Displacement
3712 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.5918
Medium
0.8218
High
0.9698
Triple Offshore
Low
0.7638
Medium
1.0143
High
1.1592
Boat Specifications
Dimensions
- Length overall
- 9.61 m
- Beam
- 3.21 m
- Draft
- 1.92 m
- Displacement
- 3712 kg
- Crew weight
- 584 kg
- Wetted surface
- 22.12 m²
Sails
- Mainsail
- 25.27 m²
- Genoa
- 26 m²
- Spinnaker
- 56.67 m²
- Asymmetric spinnaker
- 59.44 m²
Design
- Type
- FIRST 31.7
- Builder
- BENETEAU
- Designer
- FINOT
- Year built
- 1998
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.77 | 5.04 | 5.21 | 5.15 | 5.17 | 4.98 | 4.46 | 3.78 |
| 8 | 5.73 | 5.99 | 6.15 | 6.22 | 6.27 | 6.09 | 5.58 | 4.84 |
| 10 | 6.34 | 6.54 | 6.7 | 6.85 | 6.92 | 6.81 | 6.43 | 5.7 |
| 12 | 6.71 | 6.87 | 7.02 | 7.23 | 7.35 | 7.26 | 6.97 | 6.41 |
| 14 | 6.93 | 7.1 | 7.28 | 7.51 | 7.75 | 7.68 | 7.37 | 6.91 |
| 16 | 7.05 | 7.25 | 7.5 | 7.69 | 8.12 | 8.09 | 7.78 | 7.29 |
| 20 | 7.13 | 7.36 | 7.79 | 8.06 | 8.79 | 8.99 | 8.64 | 8.02 |
| 24 | 7.12 | 7.39 | 7.9 | 8.38 | 9.24 | 10.19 | 9.98 | 8.88 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.9° | 3.11 | 144.7° | 3.27 |
| 8 | 42° | 3.83 | 146.7° | 4.19 |
| 10 | 40.2° | 4.35 | 147.1° | 4.94 |
| 12 | 38.6° | 4.74 | 157.5° | 5.63 |
| 14 | 37.4° | 4.97 | 168.7° | 6.24 |
| 16 | 37.1° | 5.07 | 177.2° | 6.75 |
| 20 | 37.3° | 5.1 | 178.6° | 7.47 |
| 24 | 38.2° | 5.02 | 178.1° | 8.16 |
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