Humminbird 363 - Manual (Page 72)

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Course Projection Line
Course Projection Line allows you to display or hide an
arrow extending from the bow of the boat that projects your current course, and shows
where the boat will go if you continue on your present course.
To change the Course Project Line setting:
1. Highlight Course Projection Line on the Navigation main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Course
Projection Line setting (Hidden, Visible, Default = Hidden)
Delete All Nav Data
(Advanced)
Delete All Nav Data allows you to delete all saved Tracks, Waypoints and Routes. This
menu choice should be used with caution. The Delete All Nav Data menu choice is only
available when User Mode is set to Advanced (see Setup Menu Tab: User Mode).
To Delete All Navigation Data:
1. Make sure you are in Advanced User Mode, then highlight Delete All Nav Data
on the Navigation main menu.
2. Use the RIGHT 4-WAY Cursor Control key to delete all navigation data.