KNEE DEEP
USA J 34Sail number USA/USA25006
GPH
656
OSN
639.3
LOA
10.378 m
Displacement
3648 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6472
Medium
0.8448
High
0.9437
Triple Offshore
Low
0.8238
Medium
1.0208
High
1.1186
Boat Specifications
Dimensions
- Length overall
- 10.378 m
- Beam
- 3.47 m
- Draft
- 1.84 m
- Displacement
- 3648 kg
- Crew weight
- 460 kg
- Wetted surface
- 20.27 m²
Sails
- Mainsail
- 25.77 m²
- Genoa
- 39.14 m²
- Spinnaker
- 78.11 m²
- Asymmetric spinnaker
- 61.13 m²
Design
- Type
- J 34
- Builder
- TILLOTSON-PEARSON
- Designer
- R.JOHNSTONE
- Year built
- 1984
- Stability index
- 106.2
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.35 | 5.58 | 5.71 | 5.64 | 5.44 | 5.23 | 4.75 | 4.04 |
| 8 | 6.09 | 6.25 | 6.34 | 6.39 | 6.3 | 6.2 | 5.81 | 5.11 |
| 10 | 6.45 | 6.58 | 6.69 | 6.8 | 6.79 | 6.73 | 6.46 | 5.96 |
| 12 | 6.6 | 6.75 | 6.91 | 7.06 | 7.12 | 7.11 | 6.88 | 6.52 |
| 14 | 6.67 | 6.84 | 7.06 | 7.24 | 7.42 | 7.46 | 7.25 | 6.9 |
| 16 | 6.71 | 6.89 | 7.16 | 7.36 | 7.72 | 7.81 | 7.67 | 7.24 |
| 20 | 6.74 | 6.94 | 7.27 | 7.64 | 8.29 | 8.57 | 8.66 | 8.08 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42° | 3.56 | 145.7° | 3.5 |
| 8 | 40° | 4.22 | 150.2° | 4.42 |
| 10 | 38.2° | 4.59 | 154.1° | 5.2 |
| 12 | 37.8° | 4.73 | 162.8° | 5.82 |
| 14 | 37.6° | 4.79 | 175.4° | 6.36 |
| 16 | 37.6° | 4.83 | 178.1° | 6.75 |
| 20 | 38.4° | 4.81 | 178.4° | 7.42 |
Loading polar chart…