FIREFLY
USA J 35Sail number USA/USA40935
GPH
604.8
OSN
587.4
LOA
10.82 m
Displacement
4247 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6934
Medium
0.9196
High
1.0461
Triple Offshore
Low
0.885
Medium
1.1106
High
1.2315
Boat Specifications
Dimensions
- Length overall
- 10.82 m
- Beam
- 3.65 m
- Draft
- 2.1 m
- Displacement
- 4247 kg
- Crew weight
- 726 kg
- Wetted surface
- 24.47 m²
Sails
- Mainsail
- 32.83 m²
- Genoa
- 50.43 m²
- Spinnaker
- 95.02 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- J 35
- Builder
- J BOAT
- Designer
- JOHNSTONE
- Year built
- 1983
- Stability index
- 110.7
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.86 | 6.12 | 6.26 | 6.11 | 5.67 | 5.52 | 5 | 4.21 |
| 8 | 6.69 | 6.84 | 6.93 | 6.87 | 6.76 | 6.63 | 6.17 | 5.34 |
| 10 | 7.06 | 7.18 | 7.28 | 7.28 | 7.32 | 7.25 | 6.94 | 6.3 |
| 12 | 7.22 | 7.38 | 7.55 | 7.59 | 7.72 | 7.7 | 7.42 | 6.98 |
| 14 | 7.32 | 7.49 | 7.73 | 7.86 | 8.05 | 8.11 | 7.86 | 7.42 |
| 16 | 7.38 | 7.57 | 7.85 | 8.09 | 8.32 | 8.5 | 8.31 | 7.83 |
| 20 | 7.46 | 7.67 | 8.01 | 8.4 | 8.75 | 9.27 | 9.42 | 8.71 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 41.8° | 3.9 | 144.2° | 3.64 |
| 8 | 39.6° | 4.66 | 148.7° | 4.62 |
| 10 | 37° | 5.11 | 152.3° | 5.47 |
| 12 | 36° | 5.3 | 158.6° | 6.17 |
| 14 | 35.4° | 5.4 | 171.2° | 6.73 |
| 16 | 35.1° | 5.48 | 177.2° | 7.2 |
| 20 | 35° | 5.54 | 178.4° | 7.97 |
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