TBD
USA J-70 ONE DESIGNSail number USA/USA215
GPH
672
OSN
651.2
LOA
6.91 m
Displacement
811 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6049
Medium
0.8032
High
0.9377
Triple Offshore
Low
0.7791
Medium
1.002
High
1.1716
Boat Specifications
Dimensions
- Length overall
- 6.91 m
- Beam
- 2.25 m
- Draft
- 1.38 m
- Displacement
- 811 kg
- Crew weight
- 340 kg
- Wetted surface
- 10.83 m²
Sails
- Mainsail
- 16 m²
- Genoa
- 10.01 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 45.64 m²
Design
- Type
- J-70 ONE DESIGN
- Builder
- J BOATS
- Designer
- JOHNSTONE
- Year built
- 2012
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.63 | 4.95 | 5.17 | 5.48 | 5.56 | 5.4 | 4.84 | 4.11 |
| 8 | 5.55 | 5.8 | 5.96 | 6.24 | 6.34 | 6.23 | 5.88 | 5.19 |
| 10 | 6.02 | 6.19 | 6.35 | 6.72 | 7.1 | 6.95 | 6.5 | 5.93 |
| 12 | 6.31 | 6.55 | 6.81 | 7.04 | 7.83 | 7.87 | 7.21 | 6.42 |
| 14 | 6.46 | 6.81 | 7.31 | 7.45 | 8.29 | 8.81 | 8.13 | 7.01 |
| 16 | 6.51 | 6.9 | 7.61 | 8.11 | 8.76 | 9.47 | 9.2 | 7.82 |
| 20 | 6.57 | 6.98 | 7.8 | 8.9 | 9.9 | 10.95 | 12.86 | 10.83 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42.8° | 3.04 | 145° | 3.56 |
| 8 | 42° | 3.7 | 148° | 4.49 |
| 10 | 40.1° | 4.2 | 150.8° | 5.14 |
| 12 | 37.9° | 4.51 | 148° | 5.56 |
| 14 | 37.5° | 4.58 | 145° | 6.07 |
| 16 | 37.9° | 4.58 | 143.5° | 6.77 |
| 20 | 39° | 4.54 | 138.2° | 9.38 |
Loading polar chart…