Tamar
ISR SonarSail number ISR/ISR113
GPH
799.7
OSN
774.7
LOA
7 m
Displacement
950 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.5709
Medium
0.7848
High
0.8858
Triple Offshore
Low
0.7349
Medium
0.9548
High
1.0664
Boat Specifications
Dimensions
- Length overall
- 7 m
- Beam
- 2.41 m
- Draft
- 1.19 m
- Displacement
- 950 kg
- Crew weight
- 263 kg
- Wetted surface
- 9.43 m²
Sails
- Mainsail
- 15.74 m²
- Genoa
- 8.22 m²
- Spinnaker
- 0 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- Sonar
- Builder
- Sonar (UK) Ltd
- Designer
- Kirby
- Year built
- 1979
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.19 | 4.44 | 4.65 | 4.63 | 4.35 | 4.1 | 3.6 | 3.14 |
| 8 | 4.96 | 5.18 | 5.34 | 5.36 | 5.21 | 4.97 | 4.48 | 4.01 |
| 10 | 5.39 | 5.54 | 5.67 | 5.73 | 5.64 | 5.51 | 5.19 | 4.76 |
| 12 | 5.61 | 5.77 | 5.94 | 6.06 | 5.95 | 5.83 | 5.61 | 5.35 |
| 14 | 5.72 | 5.93 | 6.21 | 6.42 | 6.28 | 6.14 | 5.91 | 5.7 |
| 16 | 5.75 | 6.01 | 6.4 | 6.73 | 6.62 | 6.48 | 6.23 | 6 |
| 20 | 5.73 | 6 | 6.54 | 7.13 | 7.4 | 7.21 | 6.9 | 6.64 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 42.8° | 2.75 | 159.8° | 2.74 |
| 8 | 42.1° | 3.28 | 180° | 3.56 |
| 10 | 41.4° | 3.68 | 180° | 4.3 |
| 12 | 40.2° | 3.92 | 180° | 4.96 |
| 14 | 40.2° | 3.99 | 180° | 5.45 |
| 16 | 40.9° | 3.97 | 180° | 5.77 |
| 20 | 42.7° | 3.88 | 180° | 6.39 |
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