SCREWBALL
NED Hunter Formula 28Sail number NED/NED6972
GPH
692.7
OSN
675.3
LOA
8.292 m
Displacement
2219 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.682
Medium
0.9035
High
1.0148
Triple Offshore
Low
0.8733
Medium
1.089
High
1.2006
Boat Specifications
Dimensions
- Length overall
- 8.292 m
- Beam
- 2.8 m
- Draft
- 1.7 m
- Displacement
- 2219 kg
- Crew weight
- 394 kg
- Wetted surface
- 15.4 m²
Sails
- Mainsail
- 23.95 m²
- Genoa
- 21.22 m²
- Spinnaker
- 47.15 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- Hunter Formula 28
- Builder
- Hunter Boats Ltd.
- Designer
- S. Jones
- Year built
- 1983
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.98 | 5.23 | 5.42 | 5.35 | 5.2 | 5.02 | 4.52 | 3.8 |
| 8 | 5.76 | 5.91 | 6.01 | 6.02 | 6.05 | 5.94 | 5.49 | 4.76 |
| 10 | 6.07 | 6.19 | 6.3 | 6.38 | 6.45 | 6.37 | 6.14 | 5.62 |
| 12 | 6.21 | 6.35 | 6.52 | 6.61 | 6.82 | 6.75 | 6.49 | 6.18 |
| 14 | 6.27 | 6.44 | 6.71 | 6.85 | 7.18 | 7.16 | 6.87 | 6.51 |
| 16 | 6.31 | 6.49 | 6.83 | 7.08 | 7.44 | 7.54 | 7.28 | 6.86 |
| 20 | 6.33 | 6.52 | 6.93 | 7.37 | 7.75 | 8.13 | 8.16 | 7.64 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 40.9° | 3.33 | 147.6° | 3.29 |
| 8 | 40.2° | 3.96 | 152° | 4.12 |
| 10 | 38.1° | 4.36 | 152.6° | 4.89 |
| 12 | 37.1° | 4.51 | 170.2° | 5.59 |
| 14 | 36.6° | 4.57 | 180° | 6.1 |
| 16 | 36.8° | 4.6 | 180° | 6.43 |
| 20 | 37.2° | 4.61 | 180° | 7.12 |
Loading polar chart…