GRAMPUS II
ITA Swan 47 (1975)Sail number ITA/K1226
GPH
613.6
OSN
594.8
LOA
14.6 m
Displacement
14957 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6537
Medium
0.8916
High
1.0541
Triple Offshore
Low
0.8421
Medium
1.1077
High
1.2568
Boat Specifications
Dimensions
- Length overall
- 14.6 m
- Beam
- 4.19 m
- Draft
- 2.37 m
- Displacement
- 14957 kg
- Crew weight
- 827 kg
- Wetted surface
- 42.65 m²
Sails
- Mainsail
- 50.37 m²
- Genoa
- 55.61 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 165.09 m²
Design
- Type
- Swan 47 (1975)
- Builder
- Nautor
- Designer
- Sparkman&Stephens
- Year built
- 1975
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.16 | 5.44 | 5.66 | 5.69 | 5.79 | 5.65 | 5.12 | 4.35 |
| 8 | 6.06 | 6.37 | 6.62 | 6.84 | 7.01 | 6.83 | 6.23 | 5.44 |
| 10 | 6.85 | 7.14 | 7.36 | 7.59 | 7.74 | 7.65 | 7.23 | 6.38 |
| 12 | 7.35 | 7.57 | 7.74 | 7.91 | 8.11 | 8.06 | 7.81 | 7.23 |
| 14 | 7.6 | 7.8 | 7.97 | 8.05 | 8.41 | 8.39 | 8.17 | 7.79 |
| 16 | 7.74 | 7.95 | 8.15 | 8.22 | 8.63 | 8.71 | 8.49 | 8.12 |
| 20 | 7.86 | 8.09 | 8.42 | 8.6 | 8.94 | 9.24 | 9.18 | 8.75 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42.8° | 3.38 | 145° | 3.76 |
| 8 | 40.5° | 4.07 | 150° | 4.71 |
| 10 | 40.5° | 4.59 | 151° | 5.52 |
| 12 | 41.2° | 5.01 | 153.5° | 6.31 |
| 14 | 40.5° | 5.27 | 162° | 6.95 |
| 16 | 40.1° | 5.4 | 180° | 7.54 |
| 20 | 39.8° | 5.51 | 180° | 8.24 |
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