Jam Session
NED J-109Sail number NED/GBR6909R
GPH
634
OSN
617.4
LOA
10.75 m
Displacement
5109 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6494
Medium
0.8613
High
0.9665
Triple Offshore
Low
0.836
Medium
1.0661
High
1.1713
Boat Specifications
Dimensions
- Length overall
- 10.75 m
- Beam
- 3.52 m
- Draft
- 2.13 m
- Displacement
- 5109 kg
- Crew weight
- 180 kg
- Wetted surface
- 26.37 m²
Sails
- Mainsail
- 36.47 m²
- Genoa
- 29.86 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 96.47 m²
Design
- Type
- J-109
- Builder
- J Boats
- Designer
- Johnstone
- Year built
- 2001
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.08 | 5.36 | 5.6 | 5.67 | 5.76 | 5.62 | 5.09 | 4.32 |
| 8 | 6.05 | 6.33 | 6.56 | 6.75 | 6.88 | 6.76 | 6.25 | 5.41 |
| 10 | 6.68 | 6.9 | 7.07 | 7.17 | 7.4 | 7.34 | 7.06 | 6.35 |
| 12 | 6.95 | 7.15 | 7.34 | 7.4 | 7.73 | 7.75 | 7.5 | 6.99 |
| 14 | 7.04 | 7.25 | 7.52 | 7.64 | 7.96 | 8.17 | 7.93 | 7.35 |
| 16 | 7.08 | 7.3 | 7.64 | 7.87 | 8.17 | 8.5 | 8.4 | 7.64 |
| 20 | 7.17 | 7.36 | 7.72 | 8.22 | 8.53 | 8.96 | 9.44 | 8.38 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42.8° | 3.35 | 144.5° | 3.74 |
| 8 | 41.2° | 4.05 | 148° | 4.69 |
| 10 | 40.5° | 4.55 | 148.5° | 5.5 |
| 12 | 40.1° | 4.8 | 150° | 6.05 |
| 14 | 39.8° | 4.89 | 174° | 6.39 |
| 16 | 39.8° | 4.91 | 177° | 6.96 |
| 20 | 39.8° | 4.98 | 178° | 7.65 |
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