TRAMONTANA
ITA ESSE 850Sail number ITA/ITA101S850
GPH
600.5
OSN
589.5
LOA
8.5 m
Displacement
1222 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.7123
Medium
0.8892
High
1.0239
Triple Offshore
Low
0.908
Medium
1.1042
High
1.2497
Boat Specifications
Dimensions
- Length overall
- 8.5 m
- Beam
- 2.19 m
- Draft
- 2 m
- Displacement
- 1222 kg
- Crew weight
- 300 kg
- Wetted surface
- 14.43 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
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 5.8 | 6.07 | 6.24 | 6.14 | 6.17 | 6.05 | 5.46 | 4.6 |
| 8 | 6.44 | 6.68 | 6.93 | 6.91 | 7.02 | 7.05 | 6.64 | 5.81 |
| 10 | 6.64 | 6.89 | 7.28 | 7.53 | 7.5 | 7.77 | 7.53 | 6.71 |
| 12 | 6.75 | 7.03 | 7.51 | 7.94 | 7.94 | 8.32 | 8.56 | 7.5 |
| 14 | 6.82 | 7.14 | 7.69 | 8.25 | 8.51 | 8.88 | 9.64 | 8.47 |
| 16 | 6.87 | 7.22 | 7.83 | 8.53 | 9.21 | 9.43 | 10.49 | 9.64 |
| 20 | 6.88 | 7.27 | 7.99 | 8.93 | 10.16 | 10.48 | 12.02 | 12.75 |
| 24 | 6.74 | 7.17 | 8.02 | 9.22 | 10.83 | 11.53 | 13.63 | 15.62 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42.3° | 3.85 | 142.8° | 3.98 |
| 8 | 39.6° | 4.42 | 146.9° | 5.03 |
| 10 | 39° | 4.6 | 151.2° | 5.82 |
| 12 | 39.5° | 4.68 | 148.9° | 6.49 |
| 14 | 39.9° | 4.71 | 145.8° | 7.34 |
| 16 | 40° | 4.73 | 144.7° | 8.34 |
| 20 | 41.2° | 4.67 | 147.3° | 11.05 |
| 24 | 43.5° | 4.46 | 151.2° | 13.64 |
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