Humminbird Matrix 67 - Manual (Page 15)

9
Bottom Presentation
As the boat moves, the unit charts the changes in depth on the display to create a profile of the Bottom
Contour. The type of bottom can be determined from the return charted on the display. A Hard Bottom
such as compacted sediment or flat rock appears as a thinner line across the display. A Soft Bottom such
as mud or sand appears as a thicker line across the display. Rocky Bottoms have a broken, random
appearance.
The sonar returns from the bottom, structure and fish can be represented as either Inverse (default),
WhiteLine®, Structure ID®, or Bottom Black. See Sonar X-Press
TM Menu: Bottom View for details on how
to set the bottom view.
Bottom Contour Profile with RTS® Window.
Rocky Bottom
Hard Bottom
Soft Bottom