Helena
EST BIRDIE 24Sail number EST/EST406
GPH
816
OSN
790.1
LOA
7.4 m
Displacement
1800 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.4912
Medium
0.6707
High
0.8052
Triple Offshore
Low
0.6335
Medium
0.8308
High
0.9587
Boat Specifications
Dimensions
- Length overall
- 7.4 m
- Beam
- 2.41 m
- Draft
- 1.24 m
- Displacement
- 1800 kg
- Crew weight
- 500 kg
- Wetted surface
- 13.68 m²
Sails
- Mainsail
- 11.97 m²
- Genoa
- 13.44 m²
- Spinnaker
- 36.39 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- BIRDIE 24
- Designer
- Harry Becker
- Year built
- 1976
- Stability index
- 103.7
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 3.75 | 3.99 | 4.14 | 4.36 | 4.47 | 4.35 | 3.99 | 3.46 |
| 8 | 4.46 | 4.71 | 4.91 | 5.29 | 5.38 | 5.27 | 4.88 | 4.35 |
| 10 | 5.03 | 5.27 | 5.46 | 5.77 | 5.83 | 5.76 | 5.54 | 5.11 |
| 12 | 5.42 | 5.59 | 5.75 | 6.06 | 6.15 | 6.08 | 5.89 | 5.62 |
| 14 | 5.63 | 5.78 | 5.92 | 6.31 | 6.48 | 6.41 | 6.2 | 5.93 |
| 16 | 5.79 | 5.93 | 6.1 | 6.45 | 6.8 | 6.74 | 6.52 | 6.21 |
| 20 | 5.94 | 6.16 | 6.45 | 6.64 | 7.22 | 7.33 | 7.15 | 6.81 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 45° | 2.41 | 148.7° | 3 |
| 8 | 43.6° | 2.9 | 152.3° | 3.77 |
| 10 | 44.4° | 3.26 | 153.8° | 4.45 |
| 12 | 44.4° | 3.58 | 164° | 5.05 |
| 14 | 41.7° | 3.86 | 176.6° | 5.53 |
| 16 | 40° | 4.09 | 179° | 5.84 |
| 20 | 39.4° | 4.19 | 179° | 6.39 |
Loading polar chart…