ADRA
GRE FIRST 31.7Sail number GRE/GRE1221
GPH
675.3
OSN
652.2
LOA
9.61 m
Displacement
3845 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.5957
Medium
0.821
High
0.9473
Triple Offshore
Low
0.7662
Medium
1.0087
High
1.1325
Boat Specifications
Dimensions
- Length overall
- 9.61 m
- Beam
- 3.21 m
- Draft
- 1.94 m
- Displacement
- 3845 kg
- Crew weight
- 380 kg
- Wetted surface
- 21.69 m²
Sails
- Mainsail
- 25.06 m²
- Genoa
- 25.7 m²
- Spinnaker
- 61.39 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- FIRST 31.7
- Builder
- BENETEAU
- Designer
- FINOT
- Year built
- 1998
- Stability index
- 111.8
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.84 | 5.09 | 5.25 | 5.12 | 5.14 | 4.97 | 4.45 | 3.75 |
| 8 | 5.74 | 5.97 | 6.13 | 6.1 | 6.23 | 6.09 | 5.55 | 4.83 |
| 10 | 6.33 | 6.51 | 6.66 | 6.74 | 6.88 | 6.8 | 6.41 | 5.75 |
| 12 | 6.65 | 6.82 | 6.98 | 7.06 | 7.28 | 7.23 | 6.96 | 6.49 |
| 14 | 6.8 | 6.99 | 7.21 | 7.28 | 7.63 | 7.62 | 7.36 | 6.97 |
| 16 | 6.86 | 7.07 | 7.37 | 7.52 | 7.92 | 7.99 | 7.77 | 7.35 |
| 20 | 6.9 | 7.13 | 7.54 | 7.89 | 8.27 | 8.66 | 8.61 | 8.12 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43° | 3.18 | 145.7° | 3.24 |
| 8 | 40.8° | 3.88 | 149.6° | 4.18 |
| 10 | 39.4° | 4.38 | 152.3° | 4.99 |
| 12 | 38.7° | 4.67 | 157.7° | 5.7 |
| 14 | 38.2° | 4.79 | 169.4° | 6.3 |
| 16 | 38.2° | 4.84 | 177.2° | 6.8 |
| 20 | 38.7° | 4.84 | 178.1° | 7.53 |
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