Katwinchar
AUS Watney 31 ft RaterSail number AUS/CYC8
GPH
711.4
OSN
692.5
LOA
10.02 m
Displacement
4786 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6343
Medium
0.8597
High
1.0059
Triple Offshore
Low
0.8248
Medium
1.0713
High
1.2086
Boat Specifications
Dimensions
- Length overall
- 10.02 m
- Beam
- 2.66 m
- Draft
- 1.63 m
- Displacement
- 4786 kg
- Crew weight
- 495 kg
- Wetted surface
- 21.27 m²
Sails
- Mainsail
- 22.82 m²
- Genoa
- 17.59 m²
- Spinnaker
- 54.91 m²
- Asymmetric spinnaker
- 50.12 m²
Design
- Type
- Watney 31 ft Rater
- Builder
- Whatford Brewerys
- Designer
- Whatford
- Year built
- 1904
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.49 | 4.82 | 5.13 | 5.13 | 5.06 | 4.89 | 4.45 | 3.79 |
| 8 | 5.31 | 5.68 | 6 | 6.06 | 6.09 | 5.92 | 5.41 | 4.74 |
| 10 | 5.98 | 6.26 | 6.45 | 6.57 | 6.62 | 6.54 | 6.23 | 5.55 |
| 12 | 6.33 | 6.54 | 6.7 | 6.85 | 6.93 | 6.87 | 6.66 | 6.25 |
| 14 | 6.5 | 6.7 | 6.89 | 7.04 | 7.21 | 7.16 | 6.95 | 6.64 |
| 16 | 6.59 | 6.79 | 7.04 | 7.28 | 7.49 | 7.47 | 7.24 | 6.91 |
| 20 | 6.66 | 6.87 | 7.22 | 7.56 | 7.85 | 8.01 | 7.86 | 7.45 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 44.2° | 2.89 | 146° | 3.29 |
| 8 | 42.6° | 3.47 | 150.3° | 4.1 |
| 10 | 43.2° | 3.92 | 151° | 4.81 |
| 12 | 42.7° | 4.25 | 155.3° | 5.46 |
| 14 | 41.8° | 4.44 | 166.6° | 5.99 |
| 16 | 40.6° | 4.57 | 180° | 6.44 |
| 20 | 40.4° | 4.64 | 180° | 6.98 |
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