Raymarine Marine GPS System User Manual page 153

RayTech Navigator User's Guide
Using the Upwind, Downwind, and Vmc Plot Screens
The Upwind, Downwind, and Vmc Plot (Velocity Made good on
Course) screens enable you to directly analyze those aspects of the
Polar plot by reducing the display content to only those elements.
The Upwind Plot screen (Figure 5-19) calculates the best angle and
boat speed when sailing upwind and displays:
5-62
Velocity Made Good relative to True Wind Angle – click
to view, then select the True Wind Speed range to plot
Vmg
by clicking on the Tws (kts)
numbers directly.
Boat Speed relative to Tws – click
True Wind Angle relative to Tws – click
Figure 5-19. Upwind Plot Screen
up/down arrows or by entering
to view.
Bsp
Twa to view.