This is consistent with the yacht being able to sail at about 15 degrees off the apparent wind, see the table above.
22.
In fact, because the power produced depends almost entirely on the apparent wind, they can produce the most power sailing directly upwind.
23.
The mast head instruments indication of apparent wind speed and direction is different from what the sailor sees and feels near the surface.
24.
The boat will accelerate, so the apparent wind will be less than the true wind and will shift forward of the true wind.
25.
Data that is collected may include apparent wind speed, apparent wind angle, boat speed, heading, position ( Latitude / Longitude ) and depth.
26.
Data that is collected may include apparent wind speed, apparent wind angle, boat speed, heading, position ( Latitude / Longitude ) and depth.
27.
Thus, an iceboat that starts sailing on a broad reach will continue to accelerate until it is close-hauled with respect to the apparent wind.
28.
"Apparent wind " velocity is the vector sum of the " true wind " and the headwind an object would experience in still air.
29.
During flight deck certifications, " Swift " s crew conducted aircraft recovery while making during one recovery and had apparent winds during another recovery.
30.
Angle of attack is a function of both the craft's point of sail and how the sail is adjusted with respect to the apparent wind.
