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Chapter 9 - Creating Tracks
Introducing tracks
What is a track?
Why use a track?
Displaying tracks
Page 9-2
As used in 961 operations, the term track refers to a sequence
of position measurements that the 961 automatically records
every five seconds—as you travel from point A to point B and
beyond. The master track is a continuous record of everywhere
your vessel has travelled during the last 360 hours. You can
select a portion of this master track, then name and store it in
the 961's database to overlay on the CHART screen as needed;
this portion is also known as a track.
Note that the master track isn't the same as the trip, which is a
record of the specific waypoints, coordinates, and saved points
to which you have navigated.
The 961 saves track data whenever the unit is on and calculat-
ing GPS position, and even when you're vessel isn't moving.
When you're in demo mode, the 961 records your vessel's true
positions, not the demo positions.
By displaying one or more of the named tracks on the CHART
screen, you can graphically see everywhere your vessel has
been during the time represented by that particular track. This
feature lets a fisherman, for example, easily retrace the exact
track of a profitable fishing run. You can store any number of
named tracks to precisely record voyages you may want to
repeat.
The 961 displays individual tracks in two different ways. For
the type of display and its corresponding location, see "Table
7: Displaying tracks" below.
Display type
Graphical
Table 7: Displaying tracks
Display location
CHART
on the
screen, which displays a series
of dots representing the tracks that are marked
for display.
961 Operations and Reference Manual Rev. D
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