Set Map Offset (Advanced); Clear Map Offset (Advanced); Shaded Depth - Humminbird 688ci HD DI Operation Manual

Set Map Offset allows you to change the map offset used by your Fishfinder.
Press the 4-WAY Cursor Control key to activate the cursor and move it to the
location where the Map Offset will be applied. Then, confirm the map offset
position using the Set Map Offset menu setting.
The Map Offset will be applied to all maps and not just the map that requires the
correction. The Map Offset should be cleared if a different map is to be used.
NOTE: The cursor must be active in order for this procedure to work. If the cursor
was not active before you began this procedure, an error message will appear.
Exit the menu, set the cursor, then try again.
Clear Map Offset allows you to clear the Map Offset. The Clear Map Offset
menu option is available when Map Offset is active.
Shaded Depth allows you to change the depth used for shading on the Chart
View.
Chart Menu Tab
Set Map Offset
(Advanced)
Settings: Press the RIGHT Cursor key and follow screen
instructions to activate.
Clear Map Offset
(Advanced)
Settings: Follow screen instructions to activate.

Shaded Depth

Settings: Off, 1 to 180 feet, or 1 to 60 meters (International
Models only); Default = 15 ft, 5 m
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