BLACK BIRD
EST BIRDIE 24Sail number EST/EST574
GPH
787.4
OSN
764.8
LOA
7.4 m
Displacement
1910 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.5219
Medium
0.7019
High
0.8059
Triple Offshore
Low
0.6691
Medium
0.8578
High
0.9598
Boat Specifications
Dimensions
- Length overall
- 7.4 m
- Beam
- 2.41 m
- Draft
- 1.25 m
- Displacement
- 1910 kg
- Crew weight
- 310 kg
- Wetted surface
- 13.8 m²
Sails
- Mainsail
- 11.5 m²
- Genoa
- 19.89 m²
- Spinnaker
- 41.38 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- BIRDIE 24
- Designer
- Harry Becker
- Year built
- 1976
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.09 | 4.33 | 4.52 | 4.48 | 4.58 | 4.46 | 4.1 | 3.56 |
| 8 | 4.8 | 5.08 | 5.27 | 5.34 | 5.45 | 5.36 | 4.99 | 4.43 |
| 10 | 5.3 | 5.49 | 5.63 | 5.78 | 5.86 | 5.81 | 5.61 | 5.17 |
| 12 | 5.57 | 5.71 | 5.84 | 6.03 | 6.18 | 6.13 | 5.94 | 5.67 |
| 14 | 5.73 | 5.87 | 6.03 | 6.18 | 6.5 | 6.46 | 6.25 | 5.96 |
| 16 | 5.79 | 5.97 | 6.2 | 6.3 | 6.76 | 6.78 | 6.58 | 6.25 |
| 20 | 5.8 | 6.01 | 6.39 | 6.66 | 7.04 | 7.28 | 7.2 | 6.85 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.1° | 2.67 | 149° | 3.08 |
| 8 | 42° | 3.16 | 152° | 3.84 |
| 10 | 42.8° | 3.53 | 154° | 4.51 |
| 12 | 41.2° | 3.84 | 174° | 5.13 |
| 14 | 40.3° | 4.02 | 180° | 5.6 |
| 16 | 40.1° | 4.07 | 180° | 5.9 |
| 20 | 41.1° | 4.03 | 180° | 6.46 |
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