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Advanced Navigator Functions
5-51
Collecting Data
The accuracy of the analysis presented by Polars depends upon the
volume and accuracy of the data collected. There are two primary
areas within Polars where you can enter and modify data: the Polar
tab and the Data tab (Figure 5-13). The Polar tab displays the Polar
Parameters screen, which contains variables/values used to plot the
Polar graph. The Data tab displays the Data Tests screen, which
enables the input of advanced, boat/weather performance-related
information that you can use to further fine-tune the analysis.
While these screens come pre-loaded with default data, it is essential to
replace as much of this information as possible with real performance/
atmospheric-specific data. You can use Navigator’s DataTrak and Data
Logging utility programs to record a wide variety of performance-
related data that is ideal for use with these secreens. Data for these
screens can also come from such sources as your boat’s manufacturer
and local nautical organizations.
Entering and Editing Data
This section explains how to enter data into the Polar Parameters and
Data Tests screens, how to the edit individual variables, and how to
apply and save your changes.