J-CURVE
USA J-122Sail number USA/USA61220
GPH
574.4
OSN
560.7
LOA
12.2 m
Displacement
7450 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.7109
Medium
0.9517
High
1.0695
Triple Offshore
Low
0.9237
Medium
1.175
High
1.2989
Boat Specifications
Dimensions
- Length overall
- 12.2 m
- Beam
- 3.64 m
- Draft
- 2.24 m
- Displacement
- 7450 kg
- Crew weight
- 797 kg
- Wetted surface
- 32.97 m²
Sails
- Mainsail
- 51.05 m²
- Genoa
- 42.82 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 155.89 m²
Design
- Type
- J-122
- Builder
- J BOATS
- Designer
- ALAN JOHNSTONE
- Year built
- 2007
- Stability index
- 119.1
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.61 | 5.94 | 6.43 | 6.68 | 6.47 | 6.15 | 5.54 | 4.71 |
| 8 | 6.69 | 7 | 7.42 | 7.62 | 7.52 | 7.39 | 6.89 | 5.9 |
| 10 | 7.36 | 7.56 | 7.77 | 8.03 | 8.02 | 7.99 | 7.71 | 6.97 |
| 12 | 7.62 | 7.81 | 8 | 8.28 | 8.43 | 8.46 | 8.19 | 7.67 |
| 14 | 7.72 | 7.92 | 8.2 | 8.47 | 8.87 | 8.92 | 8.71 | 8.04 |
| 16 | 7.77 | 7.99 | 8.34 | 8.66 | 9.26 | 9.24 | 9.29 | 8.37 |
| 20 | 7.89 | 8.09 | 8.47 | 9.02 | 9.8 | 10.17 | 10.71 | 9.16 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43° | 3.67 | 144.2° | 4.07 |
| 8 | 41.8° | 4.46 | 146.9° | 5.11 |
| 10 | 40.6° | 5.06 | 148.7° | 6.03 |
| 12 | 39.4° | 5.34 | 150.9° | 6.65 |
| 14 | 38.4° | 5.47 | 152° | 6.97 |
| 16 | 38.2° | 5.54 | 173° | 7.42 |
| 20 | 38.1° | 5.68 | 175.7° | 8.18 |
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