Bottom Presentation - Humminbird Matrix 67 Operation Manual

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.
Bottom Contour Profile with RTS® Window.
Hard Bottom
Soft Bottom
Rocky Bottom
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.
9