BLACK JACK
GER J-97Sail number GER/GER7808
GPH
654.4
OSN
638
LOA
9.598 m
Displacement
3792 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6295
Medium
0.835
High
0.9337
Triple Offshore
Low
0.8121
Medium
1.0315
High
1.1328
Boat Specifications
Dimensions
- Length overall
- 9.598 m
- Beam
- 3.35 m
- Draft
- 1.91 m
- Displacement
- 3792 kg
- Crew weight
- 335 kg
- Wetted surface
- 21.31 m²
Sails
- Mainsail
- 28.92 m²
- Genoa
- 24.6 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 89.02 m²
Design
- Type
- J-97
- Builder
- J-COMPOSITES
- Designer
- JOHNSTONE
- Year built
- 2009
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.89 | 5.17 | 5.41 | 5.59 | 5.69 | 5.55 | 5 | 4.25 |
| 8 | 5.8 | 6.09 | 6.31 | 6.58 | 6.71 | 6.61 | 6.16 | 5.32 |
| 10 | 6.43 | 6.63 | 6.78 | 6.94 | 7.17 | 7.12 | 6.86 | 6.23 |
| 12 | 6.7 | 6.88 | 7.05 | 7.1 | 7.52 | 7.54 | 7.28 | 6.78 |
| 14 | 6.8 | 7 | 7.25 | 7.35 | 7.75 | 7.97 | 7.72 | 7.1 |
| 16 | 6.83 | 7.05 | 7.4 | 7.59 | 7.96 | 8.29 | 8.19 | 7.39 |
| 20 | 6.87 | 7.07 | 7.5 | 7.97 | 8.31 | 8.75 | 9.26 | 8.16 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42.8° | 3.21 | 145° | 3.68 |
| 8 | 41.2° | 3.87 | 148° | 4.6 |
| 10 | 40.9° | 4.37 | 148.5° | 5.39 |
| 12 | 39.9° | 4.64 | 150.5° | 5.87 |
| 14 | 39.8° | 4.72 | 174° | 6.26 |
| 16 | 40.5° | 4.73 | 177° | 6.76 |
| 20 | 40.9° | 4.76 | 177.5° | 7.41 |
Loading polar chart…