B&G Deckman - Manual (Page 103)

Chapter 6: Polars
6.4
Note. True wind angles on Deckman are relative to course i.e. they
include the effects of leeway. This is necessary for laylines to be
calculated correctly.
Note. When entering a new boat speed in the body of the table if you
enter a value greater than 60.0 Deckman assumes that it is a percentage.
Thus to change 6.0 to 6.6 you could either enter the value 6.6 directly, or
else enter 110.
Managing polars
As was mentioned above, Deckman allows you to have different copies
of each of the three polars saved on your computer. When you have a
polar table open, you can select menu>save file as, then input a new
name.
You can view saved polars by selecting navigation, performance or start
polar from the polars menu, followed by show and then either one of
the recently-used polars or file… to browse to the correct polar file.
Doing this does not actually change the polars being used in Deckman,
but allows you to edit the file through Deckman.
To load a different polar table, select navigation, performance or start
polar from the polars menu, followed by load and then either one of the
recently-used polars or file… to browse to the correct polar file.
Copying and moving polars
Changes made in either the Performance or Navigation window can be
copied from one to the other by choosing copy to perfpol or copy to
navpol from the File menu. When closing any of the polars displays you
will be given the option of saving changes made.
Note. When copying polars between the navigation and performance
polar, these will go into the currently loaded file for each.
In addition, for users with a B&G instrument system, it is also possible
to upload or download the polars to or from the Hercules system. With
the navigation polar open and while connected to the B&G system