J-70
EST J-70 ONE DESIGNSail number EST/EST1743
GPH
666.2
OSN
643.9
LOA
6.942 m
Displacement
792 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6142
Medium
0.8174
High
0.9534
Triple Offshore
Low
0.786
Medium
1.0116
High
1.1779
Boat Specifications
Dimensions
- Length overall
- 6.942 m
- Beam
- 2.26 m
- Draft
- 1.45 m
- Displacement
- 792 kg
- Crew weight
- 340 kg
- Wetted surface
- 10.71 m²
Sails
- Mainsail
- 16.2 m²
- Genoa
- 9.96 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 44.62 m²
Design
- Type
- J-70 ONE DESIGN
- Builder
- J BOATS
- Designer
- JOHNSTONE
- Year built
- 2012
- Stability index
- 97.6
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.76 | 5 | 5.15 | 5.41 | 5.48 | 5.34 | 4.82 | 4.09 |
| 8 | 5.66 | 5.84 | 5.94 | 6.24 | 6.36 | 6.25 | 5.88 | 5.18 |
| 10 | 6.12 | 6.27 | 6.42 | 6.67 | 7.07 | 6.98 | 6.57 | 5.96 |
| 12 | 6.41 | 6.63 | 6.86 | 6.95 | 7.68 | 7.81 | 7.27 | 6.51 |
| 14 | 6.54 | 6.83 | 7.25 | 7.4 | 8.13 | 8.64 | 8.17 | 7.09 |
| 16 | 6.62 | 6.94 | 7.5 | 7.96 | 8.59 | 9.3 | 9.28 | 7.89 |
| 20 | 6.66 | 7.03 | 7.78 | 8.69 | 9.49 | 10.64 | 12.44 | 10.87 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43° | 3.13 | 144.2° | 3.54 |
| 8 | 41.2° | 3.84 | 147.8° | 4.48 |
| 10 | 38.8° | 4.33 | 150.1° | 5.16 |
| 12 | 36.9° | 4.6 | 148.2° | 5.64 |
| 14 | 36.6° | 4.67 | 145.7° | 6.14 |
| 16 | 36.6° | 4.69 | 143.4° | 6.84 |
| 20 | 37.9° | 4.64 | 140.7° | 9.42 |
Loading polar chart…