ON THE ROCKSS
TUR J-70 ONE DESIGNSail number TUR/ITA1204
GPH
671
OSN
648.8
LOA
6.942 m
Displacement
812 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6079
Medium
0.8098
High
0.947
Triple Offshore
Low
0.7792
Medium
1.0044
High
1.1739
Boat Specifications
Dimensions
- Length overall
- 6.942 m
- Beam
- 2.26 m
- Draft
- 1.45 m
- Displacement
- 812 kg
- Crew weight
- 330 kg
- Wetted surface
- 10.86 m²
Sails
- Mainsail
- 16.07 m²
- Genoa
- 10 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 | 4.71 | 4.95 | 5.1 | 5.38 | 5.45 | 5.31 | 4.79 | 4.07 |
| 8 | 5.6 | 5.79 | 5.9 | 6.21 | 6.33 | 6.22 | 5.85 | 5.14 |
| 10 | 6.06 | 6.22 | 6.37 | 6.68 | 7.03 | 6.94 | 6.53 | 5.92 |
| 12 | 6.37 | 6.58 | 6.8 | 6.96 | 7.67 | 7.75 | 7.22 | 6.47 |
| 14 | 6.54 | 6.82 | 7.21 | 7.32 | 8.16 | 8.61 | 8.09 | 7.03 |
| 16 | 6.62 | 6.94 | 7.51 | 7.88 | 8.62 | 9.34 | 9.16 | 7.8 |
| 20 | 6.69 | 7.07 | 7.84 | 8.75 | 9.55 | 10.72 | 12.46 | 10.71 |
| 24 | 6.67 | 7.09 | 8 | 9.26 | 10.76 | 12.17 | 14.26 | 13.86 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.4° | 3.09 | 144.2° | 3.52 |
| 8 | 41.6° | 3.78 | 148° | 4.45 |
| 10 | 39.3° | 4.26 | 149.6° | 5.13 |
| 12 | 37.5° | 4.55 | 148.2° | 5.61 |
| 14 | 37.1° | 4.64 | 145.6° | 6.09 |
| 16 | 37.2° | 4.67 | 143.6° | 6.76 |
| 20 | 38.2° | 4.64 | 140.2° | 9.28 |
| 24 | 40° | 4.55 | 144.9° | 12 |
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