ADRA
GRE FIRST 31.7Sail number GRE/GRE1221
GPH
679.5
OSN
657.3
LOA
9.49 m
Displacement
3842 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6614
Medium
0.9144
High
1.0686
Triple Offshore
Low
0.8542
Medium
1.1272
High
1.2759
Boat Specifications
Dimensions
- Length overall
- 9.49 m
- Beam
- 3.22 m
- Draft
- 1.93 m
- Displacement
- 3842 kg
- Crew weight
- 480 kg
- Wetted surface
- 22.31 m²
Sails
- Mainsail
- 25.94 m²
- Genoa
- 22.08 m²
- Spinnaker
- 61.39 m²
- Asymmetric spinnaker
- 0 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 | 4.69 | 4.96 | 5.15 | 5.15 | 5.19 | 5.03 | 4.53 | 3.83 |
| 8 | 5.57 | 5.84 | 6.07 | 6.19 | 6.29 | 6.13 | 5.58 | 4.86 |
| 10 | 6.23 | 6.45 | 6.62 | 6.81 | 6.9 | 6.81 | 6.45 | 5.75 |
| 12 | 6.61 | 6.78 | 6.92 | 7.11 | 7.27 | 7.19 | 6.94 | 6.5 |
| 14 | 6.79 | 6.96 | 7.14 | 7.26 | 7.64 | 7.58 | 7.29 | 6.94 |
| 16 | 6.86 | 7.05 | 7.32 | 7.45 | 7.98 | 8 | 7.69 | 7.27 |
| 20 | 6.87 | 7.09 | 7.51 | 7.91 | 8.37 | 8.77 | 8.61 | 8.04 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.4° | 3.07 | 146.2° | 3.31 |
| 8 | 41.4° | 3.72 | 150.2° | 4.21 |
| 10 | 40.4° | 4.22 | 152.1° | 4.99 |
| 12 | 39.5° | 4.62 | 157.3° | 5.7 |
| 14 | 38.6° | 4.81 | 175.8° | 6.33 |
| 16 | 38.3° | 4.86 | 180° | 6.81 |
| 20 | 38.5° | 4.87 | 180° | 7.47 |
Loading polar chart…