SHEARWATER
USA J 120Sail number USA/USA120
GPH
576.6
OSN
558.1
LOA
12.244 m
Displacement
7129 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.7057
Medium
0.961
High
1.0883
Triple Offshore
Low
0.9076
Medium
1.1772
High
1.3112
Boat Specifications
Dimensions
- Length overall
- 12.244 m
- Beam
- 3.67 m
- Draft
- 2.17 m
- Displacement
- 7129 kg
- Crew weight
- 811 kg
- Wetted surface
- 33.26 m²
Sails
- Mainsail
- 44.47 m²
- Genoa
- 46.27 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 165.63 m²
Design
- Type
- J 120
- Builder
- J Composites
- Designer
- JOHNSTONE
- Year built
- 1994
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.66 | 5.97 | 6.16 | 6 | 6.17 | 6.06 | 5.37 | 4.55 |
| 8 | 6.73 | 6.98 | 7.13 | 7.15 | 7.38 | 7.3 | 6.79 | 5.76 |
| 10 | 7.37 | 7.54 | 7.67 | 7.7 | 8 | 7.98 | 7.69 | 6.86 |
| 12 | 7.68 | 7.84 | 8 | 8.01 | 8.4 | 8.46 | 8.23 | 7.65 |
| 14 | 7.83 | 8.02 | 8.24 | 8.31 | 8.69 | 8.9 | 8.75 | 8.06 |
| 16 | 7.92 | 8.13 | 8.43 | 8.58 | 8.94 | 9.3 | 9.27 | 8.4 |
| 20 | 8.04 | 8.26 | 8.66 | 9 | 9.39 | 9.94 | 10.6 | 9.13 |
| 24 | 8.08 | 8.33 | 8.81 | 9.29 | 9.82 | 10.65 | 12.86 | 11.47 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.2° | 3.7 | 143.3° | 3.94 |
| 8 | 41.2° | 4.54 | 146.9° | 4.99 |
| 10 | 39.4° | 5.15 | 147.5° | 5.94 |
| 12 | 37.8° | 5.5 | 150.4° | 6.62 |
| 14 | 36.9° | 5.66 | 149.9° | 6.98 |
| 16 | 36.4° | 5.76 | 171.2° | 7.31 |
| 20 | 36.1° | 5.88 | 175.2° | 8.13 |
| 24 | 36.4° | 5.89 | 140.8° | 9.93 |
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