ADRA
GRE FIRST 31.7Sail number GRE/GRE1221
GPH
673.4
OSN
650.4
LOA
9.61 m
Displacement
3845 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.5914
Medium
0.8225
High
0.956
Triple Offshore
Low
0.7644
Medium
1.0128
High
1.1432
Boat Specifications
Dimensions
- Length overall
- 9.61 m
- Beam
- 3.21 m
- Draft
- 1.94 m
- Displacement
- 3845 kg
- Crew weight
- 480 kg
- Wetted surface
- 21.93 m²
Sails
- Mainsail
- 25.66 m²
- Genoa
- 26.56 m²
- Spinnaker
- 61.39 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- FIRST 31.7
- Builder
- BENETEAU
- Designer
- FINOT
- Year built
- 1998
- Stability index
- 110.7
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.78 | 5.06 | 5.26 | 5.17 | 5.17 | 5 | 4.5 | 3.8 |
| 8 | 5.7 | 5.98 | 6.2 | 6.2 | 6.3 | 6.13 | 5.57 | 4.85 |
| 10 | 6.36 | 6.57 | 6.72 | 6.84 | 6.93 | 6.84 | 6.47 | 5.77 |
| 12 | 6.71 | 6.87 | 7.01 | 7.15 | 7.31 | 7.24 | 6.97 | 6.53 |
| 14 | 6.86 | 7.04 | 7.24 | 7.32 | 7.7 | 7.64 | 7.35 | 6.99 |
| 16 | 6.92 | 7.12 | 7.43 | 7.59 | 8.05 | 8.08 | 7.78 | 7.34 |
| 20 | 6.94 | 7.16 | 7.59 | 8.05 | 8.45 | 8.9 | 8.75 | 8.17 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.2° | 3.11 | 146° | 3.29 |
| 8 | 41.8° | 3.79 | 150.2° | 4.2 |
| 10 | 40.6° | 4.33 | 152° | 5.01 |
| 12 | 39.4° | 4.7 | 157° | 5.74 |
| 14 | 38.7° | 4.86 | 168.2° | 6.34 |
| 16 | 38.2° | 4.92 | 177.2° | 6.83 |
| 20 | 38.8° | 4.89 | 178.1° | 7.52 |
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