Kerttu
EST FOLKBOATSail number EST/ESTF1
GPH
855.6
OSN
826.8
LOA
7.68 m
Displacement
2195 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.4604
Medium
0.642
High
0.7561
Triple Offshore
Low
0.5974
Medium
0.7986
High
0.9075
Boat Specifications
Dimensions
- Length overall
- 7.68 m
- Beam
- 2.21 m
- Draft
- 1.21 m
- Displacement
- 2195 kg
- Crew weight
- 240 kg
- Wetted surface
- 15.21 m²
Sails
- Mainsail
- 18.35 m²
- Genoa
- 7.16 m²
- Spinnaker
- 24.3 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- FOLKBOAT
- Builder
- SET
- Year built
- 1941
- Stability index
- 137.5
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 3.58 | 3.8 | 4.04 | 4.27 | 4.21 | 4.03 | 3.57 | 3.11 |
| 8 | 4.27 | 4.5 | 4.84 | 5.14 | 5.11 | 4.92 | 4.42 | 3.95 |
| 10 | 4.82 | 5.08 | 5.42 | 5.64 | 5.62 | 5.53 | 5.22 | 4.7 |
| 12 | 5.24 | 5.44 | 5.68 | 5.91 | 5.91 | 5.84 | 5.66 | 5.35 |
| 14 | 5.47 | 5.64 | 5.79 | 6.1 | 6.18 | 6.1 | 5.92 | 5.71 |
| 16 | 5.58 | 5.76 | 5.95 | 6.19 | 6.46 | 6.38 | 6.18 | 5.96 |
| 20 | 5.62 | 5.84 | 6.17 | 6.39 | 6.84 | 6.93 | 6.75 | 6.48 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 44.7° | 2.32 | 151.4° | 2.69 |
| 8 | 42.6° | 2.82 | 157.4° | 3.45 |
| 10 | 42° | 3.18 | 164° | 4.12 |
| 12 | 42.6° | 3.49 | 167.6° | 4.79 |
| 14 | 42.4° | 3.69 | 177.2° | 5.34 |
| 16 | 42.4° | 3.76 | 179° | 5.69 |
| 20 | 43° | 3.76 | 179° | 6.17 |
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