Astra
RSA TumlarenSail number RSA/RSA4763
GPH
783
OSN
760.6
LOA
8.281 m
Displacement
1814 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.5212
Medium
0.7019
High
0.7927
Triple Offshore
Low
0.6732
Medium
0.8656
High
0.9525
Boat Specifications
Dimensions
- Length overall
- 8.281 m
- Beam
- 1.88 m
- Draft
- 1.28 m
- Displacement
- 1814 kg
- Crew weight
- 250 kg
- Wetted surface
- 14.43 m²
Sails
- Mainsail
- 16.12 m²
- Genoa
- 9.5 m²
- Spinnaker
- 35.09 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- Tumlaren
- Builder
- Unknown
- Designer
- Knud H. Reimers
- Year built
- 1934
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.12 | 4.33 | 4.46 | 4.69 | 4.74 | 4.48 | 3.99 | 3.4 |
| 8 | 4.87 | 5.09 | 5.28 | 5.49 | 5.65 | 5.54 | 5 | 4.37 |
| 10 | 5.32 | 5.53 | 5.72 | 5.85 | 6.09 | 6.06 | 5.8 | 5.22 |
| 12 | 5.51 | 5.73 | 5.96 | 6.06 | 6.36 | 6.41 | 6.22 | 5.86 |
| 14 | 5.59 | 5.81 | 6.1 | 6.26 | 6.56 | 6.71 | 6.59 | 6.24 |
| 16 | 5.64 | 5.87 | 6.17 | 6.41 | 6.71 | 6.95 | 6.96 | 6.59 |
| 20 | 5.7 | 5.94 | 6.28 | 6.6 | 6.97 | 7.29 | 7.7 | 7.34 |
| 24 | 5.67 | 5.95 | 6.33 | 6.72 | 7.17 | 7.57 | 8.5 | 8.34 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.4° | 2.7 | 146.4° | 2.94 |
| 8 | 41° | 3.28 | 150.7° | 3.79 |
| 10 | 39.9° | 3.62 | 152.3° | 4.52 |
| 12 | 40° | 3.76 | 160.2° | 5.21 |
| 14 | 40.2° | 3.81 | 175.7° | 5.74 |
| 16 | 40.5° | 3.84 | 178.4° | 6.13 |
| 20 | 41.2° | 3.86 | 178.4° | 6.78 |
| 24 | 42.6° | 3.78 | 177.5° | 7.5 |
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