BLACK BIRD
EST BIRDIE 24Sail number EST/EST574
GPH
789.6
OSN
765.4
LOA
7.4 m
Displacement
1909 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.5182
Medium
0.7012
High
0.8067
Triple Offshore
Low
0.6647
Medium
0.8569
High
0.9593
Boat Specifications
Dimensions
- Length overall
- 7.4 m
- Beam
- 2.41 m
- Draft
- 1.25 m
- Displacement
- 1909 kg
- Crew weight
- 310 kg
- Wetted surface
- 13.7 m²
Sails
- Mainsail
- 12.85 m²
- Genoa
- 19.89 m²
- Spinnaker
- 41.38 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- BIRDIE 24
- Designer
- Harry Becker
- Year built
- 1976
- Stability index
- 112.2
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.05 | 4.31 | 4.49 | 4.45 | 4.55 | 4.42 | 4.06 | 3.52 |
| 8 | 4.78 | 5.07 | 5.25 | 5.33 | 5.44 | 5.34 | 4.96 | 4.4 |
| 10 | 5.3 | 5.49 | 5.63 | 5.78 | 5.86 | 5.8 | 5.6 | 5.18 |
| 12 | 5.58 | 5.72 | 5.85 | 6.03 | 6.17 | 6.13 | 5.94 | 5.68 |
| 14 | 5.73 | 5.88 | 6.04 | 6.17 | 6.5 | 6.46 | 6.26 | 5.98 |
| 16 | 5.8 | 5.97 | 6.21 | 6.32 | 6.76 | 6.79 | 6.6 | 6.27 |
| 20 | 5.82 | 6.02 | 6.4 | 6.69 | 7.03 | 7.28 | 7.23 | 6.89 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.6° | 2.64 | 148.7° | 3.05 |
| 8 | 42.4° | 3.14 | 152.3° | 3.82 |
| 10 | 43° | 3.53 | 153.8° | 4.51 |
| 12 | 41.4° | 3.85 | 165.8° | 5.12 |
| 14 | 40.5° | 4.02 | 177.5° | 5.58 |
| 16 | 40° | 4.08 | 179° | 5.89 |
| 20 | 40.8° | 4.06 | 179° | 6.45 |
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