RAFILU' IV
ITA Lady HelmsmanSail number ITA/ITA17953
GPH
679.9
OSN
657.7
LOA
12 m
Displacement
4700 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.5753
Medium
0.8046
High
0.9428
Triple Offshore
Low
0.7517
Medium
1.0081
High
1.1356
Boat Specifications
Dimensions
- Length overall
- 12 m
- Beam
- 2.69 m
- Draft
- 1.71 m
- Displacement
- 4700 kg
- Crew weight
- 540 kg
- Wetted surface
- 23.96 m²
Sails
- Mainsail
- 35.17 m²
- Genoa
- 24.68 m²
- Spinnaker
- 54.07 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- Lady Helmsman
- Builder
- Helmsman Yachts
- Designer
- Sodergren
- Year built
- 1979
- Stability index
- 118.2
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.79 | 5.08 | 5.24 | 5.17 | 5.12 | 4.88 | 4.23 | 3.53 |
| 8 | 5.79 | 6.07 | 6.28 | 6.28 | 6.36 | 6.13 | 5.42 | 4.63 |
| 10 | 6.38 | 6.65 | 6.88 | 6.92 | 7.11 | 6.99 | 6.41 | 5.63 |
| 12 | 6.62 | 6.89 | 7.18 | 7.29 | 7.51 | 7.48 | 7.1 | 6.49 |
| 14 | 6.77 | 7.02 | 7.33 | 7.52 | 7.78 | 7.83 | 7.55 | 7.11 |
| 16 | 6.86 | 7.11 | 7.42 | 7.67 | 7.97 | 8.13 | 7.95 | 7.54 |
| 20 | 6.95 | 7.2 | 7.54 | 7.86 | 8.28 | 8.64 | 8.77 | 8.31 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 44.8° | 3.1 | 144.8° | 3.05 |
| 8 | 41.8° | 3.86 | 148.7° | 4.01 |
| 10 | 40.6° | 4.3 | 151.1° | 4.88 |
| 12 | 40.2° | 4.51 | 155.4° | 5.66 |
| 14 | 40° | 4.63 | 164.6° | 6.34 |
| 16 | 40° | 4.72 | 175.4° | 6.93 |
| 20 | 39.9° | 4.8 | 179° | 7.74 |
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