ROCKY
USA J105Sail number USA/USA378
GPH
607.1
OSN
590.1
LOA
10.57 m
Displacement
3893 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.667
Medium
0.9041
High
1.0234
Triple Offshore
Low
0.8653
Medium
1.1145
High
1.2489
Boat Specifications
Dimensions
- Length overall
- 10.57 m
- Beam
- 3.35 m
- Draft
- 2 m
- Displacement
- 3893 kg
- Crew weight
- 689 kg
- Wetted surface
- 24.83 m²
Sails
- Mainsail
- 34.38 m²
- Genoa
- 38.84 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 109.91 m²
Design
- Type
- J105
- Builder
- TILLOTSON-PEARSON
- Designer
- JOHNSTONE
- Year built
- 1994
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.45 | 5.78 | 6.04 | 5.96 | 5.93 | 5.76 | 5.06 | 4.27 |
| 8 | 6.48 | 6.74 | 6.91 | 6.92 | 7.04 | 6.94 | 6.37 | 5.38 |
| 10 | 7.02 | 7.18 | 7.31 | 7.37 | 7.58 | 7.5 | 7.19 | 6.42 |
| 12 | 7.24 | 7.42 | 7.63 | 7.68 | 8.09 | 8.07 | 7.68 | 7.12 |
| 14 | 7.34 | 7.55 | 7.9 | 8.06 | 8.5 | 8.69 | 8.27 | 7.45 |
| 16 | 7.4 | 7.64 | 8.08 | 8.41 | 8.81 | 9.27 | 8.94 | 7.84 |
| 20 | 7.43 | 7.71 | 8.26 | 8.87 | 9.44 | 10.12 | 10.67 | 9.09 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.9° | 3.53 | 144° | 3.7 |
| 8 | 41.4° | 4.32 | 147.5° | 4.66 |
| 10 | 39.8° | 4.92 | 147.2° | 5.56 |
| 12 | 37.7° | 5.19 | 150.5° | 6.17 |
| 14 | 36.8° | 5.32 | 152° | 6.48 |
| 16 | 36.8° | 5.38 | 176.5° | 7.02 |
| 20 | 36.8° | 5.4 | 142.2° | 7.88 |
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