Optimum Sailing -- Target Speed and Angle to the Apparent Wind
This page solves a parabolic curve fit to three sailing positions solving for the maximum velocity toward the wind. The input is the apparent wind angle, apparent wind speed, and the boat speed. The solution gives several targets given these inputs. All three readings need to be taken with the same TWS or the result is meangless.
Input
Summary
| Boat Speed |
Apparent Wind Speed |
Apparent Wind Direction |
True Wind Speed |
True Wind Direction |
Velocity Toward Wind |
| 3.8 | 15 | 23 | 11.6 | 30.4 | 3.3 |
| 6 | 17 | 31 | 12.3 | 45.6 | 4.2 |
| 6.9 | 0 | 39 | 6.9 | 180 | -6.9 |
Results
| Target Angle to True Wind | 70 |
| Target boat speed | 8.6 |
| Target Angle to Apparent Wind | 27.6 |
| Target Apparent Wind Speed | 15.5 |
| True Wind Speed | 10.3 |
| Velocity to Wind | 3 |
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