SURPRISE
ITA First 31.7Sail number ITA/ITA15154
GPH
664.4
OSN
641.9
LOA
9.61 m
Displacement
3741 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6062
Medium
0.8353
High
0.9674
Triple Offshore
Low
0.7803
Medium
1.0237
High
1.1537
Boat Specifications
Dimensions
- Length overall
- 9.61 m
- Beam
- 3.21 m
- Draft
- 1.93 m
- Displacement
- 3741 kg
- Crew weight
- 500 kg
- Wetted surface
- 21.75 m²
Sails
- Mainsail
- 25.12 m²
- Genoa
- 30.26 m²
- Spinnaker
- 61.44 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- First 31.7
- Builder
- Beneteau
- Designer
- Finot
- Year built
- 1998
- Stability index
- 117.3
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.03 | 5.28 | 5.43 | 5.29 | 5.14 | 4.97 | 4.45 | 3.74 |
| 8 | 5.93 | 6.15 | 6.3 | 6.24 | 6.25 | 6.08 | 5.55 | 4.82 |
| 10 | 6.48 | 6.65 | 6.79 | 6.79 | 6.9 | 6.8 | 6.41 | 5.75 |
| 12 | 6.78 | 6.94 | 7.09 | 7.15 | 7.32 | 7.25 | 6.96 | 6.49 |
| 14 | 6.93 | 7.11 | 7.32 | 7.39 | 7.7 | 7.65 | 7.36 | 6.97 |
| 16 | 7 | 7.2 | 7.51 | 7.65 | 8.03 | 8.04 | 7.77 | 7.35 |
| 20 | 7.06 | 7.29 | 7.7 | 8.05 | 8.51 | 8.83 | 8.64 | 8.12 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.3° | 3.3 | 145.7° | 3.24 |
| 8 | 40.8° | 4.02 | 149.6° | 4.18 |
| 10 | 39.4° | 4.52 | 152.3° | 4.99 |
| 12 | 38.1° | 4.82 | 157.7° | 5.7 |
| 14 | 37.6° | 4.94 | 169.4° | 6.3 |
| 16 | 37.2° | 5.01 | 177.2° | 6.8 |
| 20 | 37.5° | 5.03 | 178.1° | 7.53 |
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