BASIC
JPN SEAM 31Sail number JPN/JPN3387
GPH
621.2
OSN
606.4
LOA
9.5 m
Displacement
3167 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.7594
Medium
0.9997
High
1.1295
Triple Offshore
Low
0.9747
Medium
1.2125
High
1.3478
Boat Specifications
Dimensions
- Length overall
- 9.5 m
- Beam
- 3.24 m
- Draft
- 2 m
- Displacement
- 3167 kg
- Crew weight
- 542 kg
- Wetted surface
- 19.57 m²
Sails
- Mainsail
- 35.93 m²
- Genoa
- 30.32 m²
- Spinnaker
- 61.47 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- SEAM 31
- Builder
- TSUBOI YACHT
- Designer
- I.YOKOYAMA
- Year built
- 1999
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.63 | 5.92 | 6.15 | 6.11 | 5.74 | 5.54 | 4.98 | 4.19 |
| 8 | 6.46 | 6.63 | 6.76 | 6.77 | 6.7 | 6.57 | 6.08 | 5.25 |
| 10 | 6.8 | 6.94 | 7.08 | 7.11 | 7.16 | 7.07 | 6.77 | 6.17 |
| 12 | 6.93 | 7.11 | 7.35 | 7.44 | 7.62 | 7.53 | 7.19 | 6.79 |
| 14 | 7 | 7.2 | 7.56 | 7.77 | 8.07 | 8.03 | 7.64 | 7.18 |
| 16 | 7.04 | 7.26 | 7.68 | 8.05 | 8.39 | 8.55 | 8.15 | 7.6 |
| 20 | 7.13 | 7.35 | 7.79 | 8.36 | 8.92 | 9.48 | 9.43 | 8.59 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 41.7° | 3.74 | 144.7° | 3.63 |
| 8 | 40.2° | 4.46 | 149.5° | 4.54 |
| 10 | 37.7° | 4.88 | 152.6° | 5.36 |
| 12 | 36.7° | 5.04 | 162.2° | 6.05 |
| 14 | 36.3° | 5.12 | 180° | 6.66 |
| 16 | 36.3° | 5.15 | 180° | 7.07 |
| 20 | 36.3° | 5.2 | 180° | 7.88 |
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