How Do I Graph And Read A Polar Plot - Raymarine RayTech RNS 5.0 User Manual

88

How do I graph and read a polar plot?

The polar plot screen graphs the theoretical headings your boat should take towards
specified targets (both upwind and down wind) when encountering various wind
conditions. The accuracy of these graphs depends primarily on the volume and
accuracy of the boat and weather specific information that you have entered into the
polar parameters and data test screens. Information that has been entered will be
displayed as a polar graph in the polar plot screen. Placing the cursor in any position
along the polar plot opens a small pop-up pane that displays the wind angle/boat
speed correlation at that point.
To graph a polar plot:
1. Enter all the requisite detail into the polar parameters and data test screens as
described in the previous sections.
2. Click
3. Select the required boat speed scale by clicking on the up/down arrows, or entering
the numbers direct.
4. Select the range of True Wind Speed to be plotted by clicking on the up/down
arrows, or entering the numbers direct.
Polar
tab. The Polar Plot screen is displayed.
RayTech RNS V5.0 - User's Manual