BASIC
JPN SEAM 31Sail number JPN/JPN3387
GPH
620.5
OSN
604.2
LOA
9.5 m
Displacement
3167 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.6795
Medium
0.8932
High
1.0088
Triple Offshore
Low
0.8689
Medium
1.0793
High
1.1937
Boat Specifications
Dimensions
- Length overall
- 9.5 m
- Beam
- 3.24 m
- Draft
- 2 m
- Displacement
- 3167 kg
- Crew weight
- 528 kg
- Wetted surface
- 19.44 m²
Sails
- Mainsail
- 35.93 m²
- Genoa
- 26.99 m²
- Spinnaker
- 61.47 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- SEAM 31
- Builder
- TSUBOI YACHT
- Designer
- I.YOKOYAMA
- Year built
- 1999
- Stability index
- 112
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.71 | 5.96 | 6.11 | 5.99 | 5.73 | 5.54 | 4.96 | 4.15 |
| 8 | 6.49 | 6.64 | 6.75 | 6.72 | 6.7 | 6.55 | 6.07 | 5.25 |
| 10 | 6.8 | 6.95 | 7.08 | 7.11 | 7.2 | 7.11 | 6.77 | 6.18 |
| 12 | 6.94 | 7.11 | 7.32 | 7.41 | 7.59 | 7.56 | 7.23 | 6.8 |
| 14 | 7.03 | 7.21 | 7.49 | 7.67 | 7.94 | 7.97 | 7.68 | 7.24 |
| 16 | 7.09 | 7.28 | 7.61 | 7.89 | 8.24 | 8.4 | 8.15 | 7.66 |
| 20 | 7.14 | 7.37 | 7.76 | 8.21 | 8.72 | 9.31 | 9.36 | 8.62 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 41.8° | 3.81 | 140.8° | 3.59 |
| 8 | 39.4° | 4.54 | 148.7° | 4.55 |
| 10 | 37° | 4.92 | 153.8° | 5.38 |
| 12 | 36.3° | 5.07 | 162.2° | 6.07 |
| 14 | 35.8° | 5.15 | 175.4° | 6.65 |
| 16 | 35.7° | 5.2 | 179° | 7.09 |
| 20 | 36° | 5.22 | 179° | 7.89 |
Loading polar chart…