GEA
ITA Alpa 9Sail number ITA/ITA17758
GPH
753.2
OSN
731.3
LOA
9.09 m
Displacement
3800 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.5514
Medium
0.7357
High
0.8294
Triple Offshore
Low
0.7039
Medium
0.8975
High
0.9824
Boat Specifications
Dimensions
- Length overall
- 9.09 m
- Beam
- 2.69 m
- Draft
- 1.7 m
- Displacement
- 3800 kg
- Crew weight
- 360 kg
- Wetted surface
- 19.02 m²
Sails
- Mainsail
- 17.92 m²
- Genoa
- 28.94 m²
- Spinnaker
- 57.29 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- Alpa 9
- Builder
- Alpa
- Designer
- Illingworth
- Year built
- 1968
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.44 | 4.66 | 4.8 | 4.7 | 4.7 | 4.56 | 4.13 | 3.54 |
| 8 | 5.18 | 5.39 | 5.53 | 5.49 | 5.62 | 5.51 | 5.08 | 4.49 |
| 10 | 5.63 | 5.8 | 5.94 | 5.96 | 6.12 | 6.07 | 5.81 | 5.3 |
| 12 | 5.83 | 6 | 6.17 | 6.22 | 6.41 | 6.4 | 6.22 | 5.89 |
| 14 | 5.91 | 6.07 | 6.29 | 6.4 | 6.6 | 6.65 | 6.51 | 6.24 |
| 16 | 5.94 | 6.12 | 6.36 | 6.53 | 6.76 | 6.87 | 6.78 | 6.51 |
| 20 | 5.99 | 6.18 | 6.46 | 6.69 | 6.98 | 7.29 | 7.34 | 7.02 |
| 24 | 5.98 | 6.19 | 6.52 | 6.82 | 7.18 | 7.54 | 7.93 | 7.62 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.1° | 2.93 | 146.9° | 3.06 |
| 8 | 40.9° | 3.51 | 151.2° | 3.89 |
| 10 | 39.8° | 3.89 | 153.7° | 4.61 |
| 12 | 39.7° | 4.06 | 161.3° | 5.23 |
| 14 | 39.5° | 4.13 | 174.5° | 5.75 |
| 16 | 39.5° | 4.16 | 178.1° | 6.13 |
| 20 | 40° | 4.17 | 179° | 6.63 |
| 24 | 41.4° | 4.1 | 178.6° | 7.13 |
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