RobF
Active member
I've managed to get hold of the polar data for my boat, which is as follows:
I've got two questions:
Wind velocity | 6kts | 8kts | 10kts | 12kts | 14kts | 16kts | 20kts |
Beat angles | 43.9° | 42.1° | 41.2° | 40.4° | 38.8° | 38.1° | 38.2° |
Beat VMG | 3.11 | 3.75 | 4.26 | 4.69 | 4.97 | 5.08 | 5.11 |
52° | 4.78 | 5.66 | 6.35 | 6.76 | 6.99 | 7.1 | 7.16 |
60° | 5.06 | 5.97 | 6.59 | 6.93 | 7.14 | 7.28 | 7.38 |
75° | 5.27 | 6.22 | 6.79 | 7.08 | 7.29 | 7.49 | 7.77 |
90° | 5.46 | 6.5 | 7.05 | 7.34 | 7.49 | 7.61 | 8.02 |
110° | 5.45 | 6.55 | 7.09 | 7.43 | 7.77 | 8.1 | 8.49 |
120° | 5.26 | 6.35 | 6.99 | 7.35 | 7.69 | 8.06 | 8.77 |
135° | 4.73 | 5.78 | 6.63 | 7.1 | 7.43 | 7.78 | 8.55 |
150° | 4.01 | 5.05 | 5.94 | 6.68 | 7.1 | 7.41 | 8.09 |
Run VMG | 3.47 | 4.37 | 5.15 | 5.87 | 6.51 | 6.98 | 7.6 |
Gybe angles | 146° | 150.6° | 152.6° | 157.7° | 180° | 180° | 180° |
I've got two questions:
- Why are the Beat and Run labelled as VMG but the other angles aren't?
- Assuming I've got a clean bottom, reasonable sails and flat seas, how likely am I to be able to make these target speeds?