Pure Magic
RSA J-27Sail number RSA/RSA190
GPH
666.7
OSN
647.9
LOA
8.428 m
Displacement
1730 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6212
Medium
0.8304
High
0.9418
Triple Offshore
Low
0.7988
Medium
1.0092
High
1.1276
Boat Specifications
Dimensions
- Length overall
- 8.428 m
- Beam
- 2.6 m
- Draft
- 1.51 m
- Displacement
- 1730 kg
- Crew weight
- 415 kg
- Wetted surface
- 15.23 m²
Sails
- Mainsail
- 24.33 m²
- Genoa
- 22.84 m²
- Spinnaker
- 43.35 m²
- Asymmetric spinnaker
- 37.14 m²
Design
- Type
- J-27
- Builder
- J boats
- Designer
- Johnstone
- Year built
- 1983
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.25 | 5.49 | 5.64 | 5.53 | 5.28 | 5.1 | 4.57 | 3.76 |
| 8 | 6.04 | 6.19 | 6.29 | 6.28 | 6.22 | 6.08 | 5.59 | 4.82 |
| 10 | 6.39 | 6.52 | 6.64 | 6.71 | 6.74 | 6.64 | 6.3 | 5.71 |
| 12 | 6.52 | 6.69 | 6.9 | 7.05 | 7.17 | 7.1 | 6.76 | 6.36 |
| 14 | 6.59 | 6.78 | 7.06 | 7.3 | 7.56 | 7.55 | 7.22 | 6.78 |
| 16 | 6.65 | 6.85 | 7.18 | 7.49 | 7.99 | 8.06 | 7.7 | 7.21 |
| 20 | 6.72 | 6.95 | 7.37 | 7.83 | 8.89 | 9.54 | 9.15 | 8.18 |
| 24 | 6.71 | 6.98 | 7.46 | 8.08 | 9.75 | 11.26 | 12.32 | 10.57 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42.4° | 3.48 | 144.4° | 3.26 |
| 8 | 40.2° | 4.18 | 149.8° | 4.17 |
| 10 | 37.6° | 4.58 | 152.8° | 4.96 |
| 12 | 37° | 4.73 | 161.9° | 5.66 |
| 14 | 36.7° | 4.79 | 177.2° | 6.24 |
| 16 | 36.5° | 4.84 | 178.6° | 6.64 |
| 20 | 36.9° | 4.86 | 178.6° | 7.43 |
| 24 | 38.7° | 4.75 | 140.9° | 9.15 |
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