DeLorme Earthmate GPS PN-60 User Manual page 33

To show the depth in fathoms
If you want to show chart depths in fathoms instead
of feet or meters, select the Show Depth in Fathoms
check box.
To restore the default settings
To restore the default Navionics Setup settings, select
Restore Default Settings.
Visit the DeLorme Wiki at wiki.delorme.com for more
information. The latest version of the User Manual is always
available for download.
The Map Page
31