Antidote
RSA Viper 640Sail number RSA/RSA118
GPH
596.3
OSN
583.9
LOA
6.45 m
Displacement
340 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.7955
Medium
0.9931
High
1.1875
Triple Offshore
Low
1.0063
Medium
1.2543
High
1.4776
Boat Specifications
Dimensions
- Length overall
- 6.45 m
- Beam
- 2.34 m
- Draft
- 1.5 m
- Displacement
- 340 kg
- Crew weight
- 300 kg
- Wetted surface
- 7.55 m²
Sails
- Mainsail
- 15.72 m²
- Genoa
- 8.31 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 39.88 m²
Design
- Type
- Viper 640
- Builder
- Rondar Raceboats
- Designer
- Brian Bennett
- Year built
- 1993
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.6 | 5.78 | 5.92 | 5.92 | 6.02 | 5.91 | 5.52 | 4.7 |
| 8 | 6.15 | 6.47 | 6.85 | 6.79 | 7.06 | 7.13 | 6.49 | 5.77 |
| 10 | 6.39 | 6.77 | 7.43 | 7.92 | 7.82 | 8.09 | 7.82 | 6.57 |
| 12 | 6.5 | 6.93 | 7.74 | 8.54 | 8.55 | 8.85 | 9.34 | 7.8 |
| 14 | 6.69 | 7.13 | 7.95 | 8.95 | 9.74 | 9.79 | 10.43 | 9.32 |
| 16 | 6.84 | 7.38 | 8.32 | 9.23 | 10.65 | 10.75 | 11.42 | 11.15 |
| 20 | 6.96 | 7.57 | 8.78 | 10.05 | 11.67 | 12.8 | 13.53 | 14.45 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42.1° | 3.77 | 143.1° | 4.07 |
| 8 | 37.3° | 4.34 | 151.5° | 4.97 |
| 10 | 36.4° | 4.48 | 148.7° | 5.69 |
| 12 | 36.3° | 4.51 | 141.9° | 6.75 |
| 14 | 36.3° | 4.6 | 141.1° | 8.07 |
| 16 | 36.7° | 4.63 | 144.2° | 9.66 |
| 20 | 37.6° | 4.64 | 149.8° | 12.52 |
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