ROCKALL IV
GER JPK 10.30Sail number GER/GER8007
GPH
609
OSN
591.2
LOA
10.34 m
Displacement
3763 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6655
Medium
0.9008
High
1.0177
Triple Offshore
Low
0.8601
Medium
1.1136
High
1.247
Boat Specifications
Dimensions
- Length overall
- 10.34 m
- Beam
- 3.39 m
- Draft
- 1.98 m
- Displacement
- 3763 kg
- Crew weight
- 450 kg
- Wetted surface
- 22.11 m²
Sails
- Mainsail
- 32.75 m²
- Genoa
- 26.17 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 100.6 m²
Design
- Type
- JPK 10.30
- Builder
- JPK COMPOSITES
- Designer
- VALER JACQUES
- Year built
- 2019
- Stability index
- 120.7
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.2 | 5.5 | 5.75 | 5.87 | 5.98 | 5.84 | 5.22 | 4.43 |
| 8 | 6.26 | 6.56 | 6.77 | 7 | 7.14 | 7.05 | 6.56 | 5.6 |
| 10 | 6.96 | 7.15 | 7.28 | 7.37 | 7.71 | 7.65 | 7.35 | 6.65 |
| 12 | 7.22 | 7.42 | 7.62 | 7.64 | 8.11 | 8.26 | 7.9 | 7.31 |
| 14 | 7.31 | 7.54 | 7.89 | 8.02 | 8.43 | 8.81 | 8.54 | 7.7 |
| 16 | 7.35 | 7.6 | 8.06 | 8.4 | 8.73 | 9.21 | 9.3 | 8.11 |
| 20 | 7.46 | 7.71 | 8.2 | 8.9 | 9.3 | 9.99 | 11.22 | 9.63 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.3° | 3.39 | 143.9° | 3.83 |
| 8 | 41.8° | 4.17 | 146.9° | 4.85 |
| 10 | 40.6° | 4.77 | 148.7° | 5.76 |
| 12 | 39.4° | 5.03 | 150.7° | 6.33 |
| 14 | 39.3° | 5.14 | 148.8° | 6.67 |
| 16 | 39.3° | 5.17 | 173.9° | 7.11 |
| 20 | 39.2° | 5.27 | 141.7° | 8.34 |
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