Garmin GPSMAP 180 - Manual (Page 57)

A B
MOB
The GPSMAP 180’s man overboard function (MOB) lets you simultaneously
mark and set a course to a position for quick response to emergency situations.
To activate the MOB function:
1. Press the B key.
2. Press the T key to confirm and begin navigating to the MOB position.
Once a MOB has been activated, a MOB icon will appear on the map display,
and the destination field on the Map Page will display the bearing, distance, and
ETE to the MOB position based on your present speed and course.
To stop navigation to the MOB position:
1. Press the G key, followed by O , to display the GOTO options page.
2. Select the ‘Cancel GOTO’ option and press T .
TracBack Navigation
The third method of navigating to a destination is by using the GPSMAP 180’s
TracBack feature. The TracBack function allows you to retrace your path using the
track log automatically stored in the receiver’s memory, which will eliminate the
need to store waypoints along the way. TracBack routes are created by reducing
your track log into a route of up to 30 waypoints and activating an inverted route
along those points. Once activated, a TracBack route will lead you back to the
oldest track log point stored in memory, so it’s good idea to clear the existing
track log at the start of your current trip (e.g., your dock) before you get started.
To clear the track log and define a starting point for a TracBack route:
1. Press the O key twice to display the Main Menu Page.
2. Highlight the ‘Track’ option and press T .
3. Select the ‘Delete Track?’ option and press T .
4. Highlight the ‘Yes’ field and press T .
45
A. The GPSMAP 180’s MOB mode can be used to
set a course to a passing spot for quick response
to emergency situations, fish strikes, etc.
B. To define a starting point for a TracBack route,
clear the track log.
SECTION
7
GOTO/MOB
MOB & TracBack
Navigation