OZ SPIRIT
POR FIRST 31.7 Q.B.Sail number POR/POR1446
GPH
666.5
OSN
645
LOA
9.61 m
Displacement
3750 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6051
Medium
0.8299
High
0.955
Triple Offshore
Low
0.7804
Medium
1.0198
High
1.1439
Boat Specifications
Dimensions
- Length overall
- 9.61 m
- Beam
- 3.21 m
- Draft
- 1.92 m
- Displacement
- 3750 kg
- Crew weight
- 400 kg
- Wetted surface
- 21.73 m²
Sails
- Mainsail
- 24.98 m²
- Genoa
- 26.21 m²
- Spinnaker
- 61.44 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- FIRST 31.7 Q.B.
- Builder
- BENETEAU
- Designer
- FINOT
- Year built
- 1998
- Stability index
- 112.2
Velocity Prediction
Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into WX Navigator or compatible navigation software.
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.98 | 5.26 | 5.44 | 5.33 | 5.19 | 5.02 | 4.49 | 3.78 |
| 8 | 5.88 | 6.13 | 6.3 | 6.25 | 6.28 | 6.13 | 5.61 | 4.86 |
| 10 | 6.44 | 6.63 | 6.78 | 6.78 | 6.92 | 6.83 | 6.46 | 5.79 |
| 12 | 6.73 | 6.9 | 7.08 | 7.12 | 7.33 | 7.28 | 7 | 6.53 |
| 14 | 6.85 | 7.05 | 7.3 | 7.39 | 7.7 | 7.69 | 7.41 | 7.01 |
| 16 | 6.91 | 7.13 | 7.46 | 7.64 | 8.02 | 8.08 | 7.83 | 7.4 |
| 20 | 6.95 | 7.19 | 7.61 | 8.01 | 8.42 | 8.83 | 8.75 | 8.2 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.6° | 3.26 | 145.2° | 3.27 |
| 8 | 41.2° | 3.96 | 149.6° | 4.21 |
| 10 | 39.6° | 4.45 | 152° | 5.03 |
| 12 | 38.7° | 4.73 | 157.7° | 5.74 |
| 14 | 38.2° | 4.84 | 169.4° | 6.34 |
| 16 | 38.2° | 4.89 | 177.2° | 6.83 |
| 20 | 38.7° | 4.88 | 178.1° | 7.58 |
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