SCREWBALL
NED Hunter Formula 28Sail number NED/NED6972
GPH
692.8
OSN
675.8
LOA
8.292 m
Displacement
2219 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6065
Medium
0.8022
High
0.8997
Triple Offshore
Low
0.7768
Medium
0.9675
High
1.0658
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
- 15.35 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 | 5.36 | 5.2 | 5.03 | 4.53 | 3.81 |
| 8 | 5.75 | 5.91 | 6.02 | 6.03 | 6.06 | 5.95 | 5.5 | 4.78 |
| 10 | 6.07 | 6.19 | 6.3 | 6.38 | 6.45 | 6.38 | 6.14 | 5.63 |
| 12 | 6.2 | 6.35 | 6.52 | 6.61 | 6.82 | 6.75 | 6.5 | 6.18 |
| 14 | 6.26 | 6.43 | 6.7 | 6.86 | 7.18 | 7.16 | 6.88 | 6.51 |
| 16 | 6.3 | 6.48 | 6.82 | 7.09 | 7.44 | 7.55 | 7.29 | 6.87 |
| 20 | 6.32 | 6.51 | 6.92 | 7.37 | 7.77 | 8.14 | 8.18 | 7.65 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 41.2° | 3.32 | 147.5° | 3.3 |
| 8 | 40.5° | 3.95 | 152° | 4.13 |
| 10 | 38.2° | 4.35 | 153° | 4.9 |
| 12 | 37.1° | 4.49 | 170° | 5.6 |
| 14 | 36.8° | 4.55 | 180° | 6.11 |
| 16 | 37.1° | 4.58 | 180° | 6.44 |
| 20 | 37.5° | 4.58 | 180° | 7.13 |
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