Tamar
ISR SonarSail number ISR/ISR113
GPH
744.8
OSN
721
LOA
7.142 m
Displacement
950 kg
Triple-Number Ratings
Lower is fasterTriple Inshore
Low
0.5427
Medium
0.7401
High
0.8439
Triple Offshore
Low
0.7015
Medium
0.9086
High
1.0336
Boat Specifications
Dimensions
- Length overall
- 7.142 m
- Beam
- 2.38 m
- Draft
- 1.19 m
- Displacement
- 950 kg
- Crew weight
- 308 kg
- Wetted surface
- 11.2 m²
Sails
- Mainsail
- 18.09 m²
- Genoa
- 8.56 m²
- Spinnaker
- 31.76 m²
- Asymmetric spinnaker
- 0 m²
Design
- Type
- Sonar
- Builder
- Sonar (UK) Ltd
- Designer
- Kirby
- Year built
- 1979
- Stability index
- 90.7
Velocity Prediction
| Wind Speed | 52° | 60° | 75° | 90° | 110° | 120° | 135° | 150° |
|---|---|---|---|---|---|---|---|---|
| 6 | 4.32 | 4.57 | 4.73 | 4.88 | 4.91 | 4.75 | 4.26 | 3.56 |
| 8 | 5.11 | 5.33 | 5.47 | 5.7 | 5.74 | 5.63 | 5.17 | 4.54 |
| 10 | 5.57 | 5.74 | 5.88 | 6.15 | 6.25 | 6.14 | 5.85 | 5.35 |
| 12 | 5.84 | 6.01 | 6.2 | 6.47 | 6.72 | 6.62 | 6.3 | 5.92 |
| 14 | 6.01 | 6.23 | 6.49 | 6.65 | 7.18 | 7.13 | 6.76 | 6.34 |
| 16 | 6.08 | 6.34 | 6.72 | 6.92 | 7.62 | 7.77 | 7.3 | 6.76 |
| 20 | 6.1 | 6.43 | 6.96 | 7.55 | 8.35 | 9.52 | 9.23 | 7.89 |
| Wind Speed | Beat Angle | Beat VMG | Run Angle | Run VMG |
|---|---|---|---|---|
| 6 | 43.8° | 2.81 | 146° | 3.08 |
| 8 | 41.8° | 3.41 | 151.4° | 3.94 |
| 10 | 40.8° | 3.81 | 157.4° | 4.67 |
| 12 | 39.9° | 4.09 | 170° | 5.34 |
| 14 | 39.4° | 4.21 | 178.1° | 5.84 |
| 16 | 39.6° | 4.24 | 178.1° | 6.23 |
| 20 | 42° | 4.14 | 176.6° | 7.02 |
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