Vortex
RSA Bongers 39Sail number RSA/SA1539
GPH
685.5
OSN
661.3
LOA
12.67 m
Displacement
8688 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6186
Medium
0.888
High
1.0997
Triple Offshore
Low
0.8115
Medium
1.1304
High
1.3386
Boat Specifications
Dimensions
- Length overall
- 12.67 m
- Beam
- 3.71 m
- Draft
- 1.72 m
- Displacement
- 8688 kg
- Crew weight
- 600 kg
- Wetted surface
- 35.95 m²
Sails
- Mainsail
- 31.38 m²
- Genoa
- 43.45 m²
- Spinnaker
- 84.2 m²
- Asymmetric spinnaker
- 84.2 m²
Design
- Type
- Bongers 39
- Builder
- Bongers Marine
- Designer
- Bongers / du Toit?
- Year built
- 1992
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.38 | 4.75 | 5.09 | 5.07 | 4.99 | 4.8 | 4.26 | 3.62 |
| 8 | 5.4 | 5.78 | 6.13 | 6.12 | 6.16 | 5.96 | 5.4 | 4.7 |
| 10 | 6.18 | 6.59 | 6.98 | 7.05 | 7.13 | 6.94 | 6.35 | 5.63 |
| 12 | 6.83 | 7.2 | 7.48 | 7.62 | 7.67 | 7.57 | 7.17 | 6.45 |
| 14 | 7.26 | 7.53 | 7.76 | 7.89 | 8.01 | 7.93 | 7.66 | 7.18 |
| 16 | 7.45 | 7.71 | 7.96 | 8.02 | 8.34 | 8.24 | 7.99 | 7.64 |
| 20 | 7.59 | 7.84 | 8.24 | 8.45 | 8.84 | 8.97 | 8.66 | 8.24 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 46° | 2.78 | 146.7° | 3.13 |
| 8 | 44.5° | 3.48 | 149.2° | 4.07 |
| 10 | 43.6° | 4.01 | 152.1° | 4.89 |
| 12 | 43.7° | 4.43 | 154.2° | 5.61 |
| 14 | 43.8° | 4.79 | 157.8° | 6.29 |
| 16 | 42.6° | 5.01 | 180° | 6.94 |
| 20 | 41.2° | 5.2 | 180° | 7.81 |
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