ROCKY
USA J105Sail number USA/USA378
GPH
608.4
OSN
590.4
LOA
10.57 m
Displacement
3893 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6655
Medium
0.9046
High
1.0273
Triple Offshore
Low
0.8607
Medium
1.1133
High
1.252
Boat Specifications
Dimensions
- Length overall
- 10.57 m
- Beam
- 3.35 m
- Draft
- 2 m
- Displacement
- 3893 kg
- Crew weight
- 689 kg
- Wetted surface
- 24.84 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
- Stability index
- 111.2
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.37 | 5.7 | 5.95 | 5.86 | 5.87 | 5.71 | 5.06 | 4.28 |
| 8 | 6.42 | 6.69 | 6.86 | 6.89 | 7.01 | 6.91 | 6.37 | 5.42 |
| 10 | 6.99 | 7.15 | 7.28 | 7.36 | 7.56 | 7.5 | 7.2 | 6.46 |
| 12 | 7.23 | 7.4 | 7.59 | 7.63 | 8.07 | 8.07 | 7.71 | 7.15 |
| 14 | 7.33 | 7.54 | 7.87 | 8.01 | 8.48 | 8.68 | 8.32 | 7.51 |
| 16 | 7.4 | 7.63 | 8.06 | 8.36 | 8.8 | 9.26 | 9.01 | 7.88 |
| 20 | 7.45 | 7.73 | 8.27 | 8.86 | 9.41 | 10.12 | 10.79 | 9.21 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43° | 3.51 | 143.9° | 3.71 |
| 8 | 41.8° | 4.28 | 147.3° | 4.69 |
| 10 | 40° | 4.89 | 147.6° | 5.59 |
| 12 | 37.8° | 5.19 | 150.5° | 6.2 |
| 14 | 36.9° | 5.32 | 150.1° | 6.51 |
| 16 | 36.6° | 5.4 | 173.9° | 6.98 |
| 20 | 36.4° | 5.45 | 142.1° | 7.98 |
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