LIGO-LIGO
GRE SHAMROCKSail number GRE/GRE4947
GPH
723.4
OSN
701.9
LOA
9.046 m
Displacement
3609 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6362
Medium
0.8615
High
0.9966
Triple Offshore
Low
0.8143
Medium
1.0529
High
1.1796
Boat Specifications
Dimensions
- Length overall
- 9.046 m
- Beam
- 3.1 m
- Draft
- 1.69 m
- Displacement
- 3609 kg
- Crew weight
- 485 kg
- Wetted surface
- 18.59 m²
Sails
- Mainsail
- 17.73 m²
- Genoa
- 31.23 m²
- Spinnaker
- 62.03 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- SHAMROCK
- Builder
- SOUTH COAST BOATY.
- Designer
- R. HOLLAND
- Year built
- 1975
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.5 | 4.74 | 4.92 | 4.86 | 4.84 | 4.71 | 4.32 | 3.73 |
| 8 | 5.3 | 5.57 | 5.76 | 5.72 | 5.85 | 5.72 | 5.27 | 4.65 |
| 10 | 5.86 | 6.03 | 6.17 | 6.25 | 6.35 | 6.28 | 6.03 | 5.46 |
| 12 | 6.14 | 6.28 | 6.41 | 6.54 | 6.67 | 6.62 | 6.42 | 6.09 |
| 14 | 6.29 | 6.44 | 6.6 | 6.69 | 6.98 | 6.94 | 6.73 | 6.43 |
| 16 | 6.36 | 6.54 | 6.77 | 6.85 | 7.25 | 7.26 | 7.05 | 6.71 |
| 20 | 6.4 | 6.61 | 6.98 | 7.21 | 7.55 | 7.77 | 7.67 | 7.3 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42.1° | 2.97 | 147.9° | 3.23 |
| 8 | 41° | 3.52 | 151.9° | 4.03 |
| 10 | 41.7° | 3.97 | 152.1° | 4.75 |
| 12 | 39.8° | 4.32 | 161.3° | 5.39 |
| 14 | 39.1° | 4.47 | 180° | 5.97 |
| 16 | 38.5° | 4.55 | 180° | 6.33 |
| 20 | 38.9° | 4.55 | 180° | 6.89 |
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