BLACK JACK
GER J-97Sail number GER/GER7808
GPH
653.1
OSN
635.6
LOA
9.6 m
Displacement
3792 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6297
Medium
0.8378
High
0.9355
Triple Offshore
Low
0.8112
Medium
1.0349
High
1.1396
Boat Specifications
Dimensions
- Length overall
- 9.6 m
- Beam
- 3.35 m
- Draft
- 1.91 m
- Displacement
- 3792 kg
- Crew weight
- 340 kg
- Wetted surface
- 20.74 m²
Sails
- Mainsail
- 28.92 m²
- Genoa
- 24.14 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 89.02 m²
Design
- Type
- J-97
- Builder
- J-COMPOSITES
- Designer
- JOHNSTONE
- Year built
- 2009
- Stability index
- 118.3
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.85 | 5.13 | 5.35 | 5.58 | 5.69 | 5.55 | 5.02 | 4.29 |
| 8 | 5.78 | 6.07 | 6.29 | 6.59 | 6.72 | 6.63 | 6.2 | 5.38 |
| 10 | 6.43 | 6.63 | 6.78 | 6.94 | 7.19 | 7.15 | 6.9 | 6.3 |
| 12 | 6.7 | 6.88 | 7.06 | 7.11 | 7.55 | 7.61 | 7.36 | 6.84 |
| 14 | 6.8 | 7.01 | 7.27 | 7.37 | 7.79 | 8.05 | 7.84 | 7.16 |
| 16 | 6.84 | 7.06 | 7.42 | 7.63 | 8 | 8.35 | 8.34 | 7.48 |
| 20 | 6.89 | 7.1 | 7.53 | 8.02 | 8.38 | 8.86 | 9.63 | 8.19 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43° | 3.17 | 145.1° | 3.72 |
| 8 | 41.8° | 3.85 | 147.8° | 4.66 |
| 10 | 41.1° | 4.37 | 148.8° | 5.46 |
| 12 | 40° | 4.64 | 150.5° | 5.93 |
| 14 | 40.2° | 4.73 | 165.8° | 6.25 |
| 16 | 40.2° | 4.75 | 174.8° | 6.74 |
| 20 | 40.6° | 4.8 | 175.7° | 7.41 |
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