Raymarine GPM400 Reference Manual page 61

You can personalize track options to suit your requirements:
• Rename a track.
• Change the color of a track.
• Specify the time between track points.
• Specify the distance between track points.
Note: The smaller the track interval, the more points a track will
use.
Creating a track
There is a maximum number of tracking points that can be stored
by the G-Series system. It will warn you if your track uses the maxi-
mum number of track points and, if you continue to record your
track, start to overwrite the earliest track points with newer ones.
To start recording a track
1. Press the TRACKS softkey.
2. Press the START TRACK softkey.
To stop recording a track
1. Press the TRACKS softkey.
2. Press STOP TRACK.
3. Choose between SAVE TRACK and DISCARD TRACK.
Creating a route from a track
When a track is converted to a route, the system recreates the
course of your recorded journey using the minimum number of
waypoints.
Each waypoint created is saved with the depth and temperature
data (if applicable) for that position.
On completion, the maximum deviation of the route from the
recorded track is displayed and the new route is added to the route
list. You can use it in the same way as all your other routes.
Note: If the power fails while a track is being recorded, or if the
position fix is lost, a break will occur in the track. Only the
last contiguous segment of a track can be converted into a
route.
CAUTION: Before following the route, ensure that it is safe
for navigation, noting that it may deviate from your actual
path travelled.
To create a route from the current track
This method will take a 'snapshot' of the track to date, convert it to
a route and then continue laying the track:
1. Highlight the track with the cursor.
2. Press the CREATE ROUTE FROM TRACK softkey.
3. Press YES to give the route a name or NO to store the route
with the next default route number.
To create a route from a saved track
1. Press the TRACKS softkey.
2. Press the CREATE ROUTE FROM TRACK softkey to open the
Track List.
3. Select the track you want to convert.
4. Press CREATE ROUTE FROM TRACK again.
Editing and deleting tracks
To change the name and color of a track, or to delete a stored track,
you need to use the Review and Edit Tracks function. First you
select the track to edit or delete, then you make the changes you
want.
To select a track for editing
1. Highlight the track to edit on screen.
2. Press the REVIEW AND EDIT TRACKS softkey.
or
1. Open the Track List by pressing the TRACKS softkey followed
by the REVIEW AND EDIT TRACKS softkey.
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Chapter 5: The Chart Application