TRAMONTANA
ITA ESSE 850Sail number ITA/ITA101S850
GPH
601.1
OSN
590.9
LOA
8.5 m
Displacement
1222 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.7078
Medium
0.8826
High
1.0202
Triple Offshore
Low
0.9076
Medium
1.1031
High
1.2487
Boat Specifications
Dimensions
- Length overall
- 8.5 m
- Beam
- 2.19 m
- Draft
- 2 m
- Displacement
- 1222 kg
- Crew weight
- 280 kg
- Wetted surface
- 14.23 m²
Sails
- Mainsail
- 28.06 m²
- Genoa
- 17.44 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 72.28 m²
Design
- Type
- ESSE 850
- Builder
- Proteus Yachts
- Designer
- FELCI
- Year built
- 2004
- Stability index
- 123.9
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.74 | 6.07 | 6.29 | 6.24 | 6.28 | 6.14 | 5.51 | 4.64 |
| 8 | 6.42 | 6.66 | 6.97 | 6.98 | 7.08 | 7.15 | 6.71 | 5.91 |
| 10 | 6.58 | 6.84 | 7.31 | 7.69 | 7.59 | 7.87 | 7.65 | 6.77 |
| 12 | 6.64 | 6.94 | 7.5 | 8.07 | 8.12 | 8.43 | 8.8 | 7.61 |
| 14 | 6.71 | 7.01 | 7.63 | 8.31 | 8.88 | 9 | 9.82 | 8.66 |
| 16 | 6.78 | 7.16 | 7.76 | 8.47 | 9.49 | 9.84 | 10.63 | 10.01 |
| 20 | 6.8 | 7.21 | 8.03 | 8.86 | 10.16 | 11.15 | 12.19 | 13.33 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.5° | 3.74 | 142.4° | 4.02 |
| 8 | 40.8° | 4.35 | 146.9° | 5.12 |
| 10 | 40.2° | 4.51 | 152° | 5.88 |
| 12 | 40.8° | 4.54 | 148.7° | 6.59 |
| 14 | 41.2° | 4.59 | 145.3° | 7.5 |
| 16 | 41.4° | 4.62 | 142.8° | 8.67 |
| 20 | 42.4° | 4.57 | 148.4° | 11.54 |
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