Manual

Navigation options
3.25
displayed. This is an easy way to check you have entered tidal
information for all the reference ports you might need.
Navigation options
You have a number of options as to the sources of data you use for your
navigation functions in Deckman, such as variation, current/tide, boat
position and so on. Hit
menu>view>options
and you will be presented
with the dialog shown in Figure 3.13.
Variation
is the magnetic variation for your area in the form dd.d.
Preceding the number with a minus sign will set it to West, a positive
Figure 3.13