BETELGEUSE
ITA Alpa 9Sail number ITA/ITA2781
GPH
744.2
OSN
725.8
LOA
9.09 m
Displacement
3800 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.547
Medium
0.7334
High
0.8324
Triple Offshore
Low
0.7053
Medium
0.9107
High
1.0049
Boat Specifications
Dimensions
- Length overall
- 9.09 m
- Beam
- 2.69 m
- Draft
- 1.7 m
- Displacement
- 3800 kg
- Crew weight
- 450 kg
- Wetted surface
- 19.14 m²
Sails
- Mainsail
- 17.99 m²
- Genoa
- 32.32 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 65.25 m²
Design
- Type
- Alpa 9
- Builder
- Alpa
- Designer
- Illingworth & co.
- Year built
- 1968
- Stability index
- 134.1
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.37 | 4.62 | 4.81 | 4.75 | 4.83 | 4.61 | 4.19 | 3.62 |
| 8 | 5.16 | 5.45 | 5.66 | 5.69 | 5.83 | 5.71 | 5.2 | 4.49 |
| 10 | 5.74 | 5.93 | 6.08 | 6.2 | 6.3 | 6.25 | 6.02 | 5.37 |
| 12 | 6 | 6.16 | 6.3 | 6.41 | 6.61 | 6.58 | 6.39 | 5.89 |
| 14 | 6.1 | 6.27 | 6.46 | 6.55 | 6.88 | 6.89 | 6.7 | 6.19 |
| 16 | 6.16 | 6.33 | 6.58 | 6.73 | 7.08 | 7.19 | 7.01 | 6.42 |
| 20 | 6.2 | 6.39 | 6.7 | 7.01 | 7.33 | 7.6 | 7.57 | 6.86 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.2° | 2.86 | 146° | 3.13 |
| 8 | 41.8° | 3.42 | 146° | 3.89 |
| 10 | 41.8° | 3.87 | 145.6° | 4.65 |
| 12 | 40.8° | 4.14 | 148.2° | 5.1 |
| 14 | 40.2° | 4.25 | 165.8° | 5.43 |
| 16 | 40° | 4.31 | 173.6° | 5.9 |
| 20 | 40.4° | 4.32 | 177.2° | 6.44 |
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