THUNDER
USA EXPRESS 37Sail number USA/USA18431
GPH
606.9
OSN
590.1
LOA
11.305 m
Displacement
4878 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6877
Medium
0.9108
High
1.0337
Triple Offshore
Low
0.8801
Medium
1.1087
High
1.2248
Boat Specifications
Dimensions
- Length overall
- 11.305 m
- Beam
- 3.53 m
- Draft
- 2.23 m
- Displacement
- 4878 kg
- Crew weight
- 754 kg
- Wetted surface
- 27.69 m²
Sails
- Mainsail
- 32.78 m²
- Genoa
- 51.12 m²
- Spinnaker
- 102.87 m²
- Asymmetric spinnaker
- 100.29 m²
Design
- Type
- EXPRESS 37
- Builder
- ALSBERG BROS
- Designer
- SCHUMACHER
- Year built
- 1984
- Stability index
- 110.2
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.77 | 6.02 | 6.17 | 6.01 | 5.72 | 5.56 | 5 | 4.2 |
| 8 | 6.65 | 6.82 | 6.92 | 6.86 | 6.83 | 6.7 | 6.2 | 5.34 |
| 10 | 7.06 | 7.21 | 7.33 | 7.32 | 7.42 | 7.35 | 7.02 | 6.3 |
| 12 | 7.22 | 7.39 | 7.57 | 7.63 | 7.8 | 7.79 | 7.53 | 7.03 |
| 14 | 7.31 | 7.48 | 7.72 | 7.87 | 8.11 | 8.19 | 7.95 | 7.5 |
| 16 | 7.36 | 7.54 | 7.82 | 8.07 | 8.36 | 8.57 | 8.39 | 7.89 |
| 20 | 7.41 | 7.6 | 7.94 | 8.3 | 8.86 | 9.3 | 9.49 | 8.75 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42.3° | 3.84 | 143.3° | 3.64 |
| 8 | 39.9° | 4.6 | 146.9° | 4.62 |
| 10 | 37.8° | 5.02 | 150.2° | 5.46 |
| 12 | 37° | 5.19 | 157.2° | 6.19 |
| 14 | 36.4° | 5.29 | 167.3° | 6.77 |
| 16 | 36.6° | 5.35 | 177.2° | 7.26 |
| 20 | 36.9° | 5.37 | 177.2° | 8.02 |
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