Humminbird 778C - Manual (Page 21)

13
Sonar Colors and Bottom View
As the boat moves, the unit charts the changes
in depth on the display to create a profile of the
Bottom Contour. The Sonar View displays the
sonar return intensity with different colors.
Strong returns often result from rocky or hard
bottoms (compacted sediment, rocks, fallen
trees), while weaker returns often result from
soft bottoms (sand, mud), vegetation, and small
fish.
The colors used to represent high, medium,
to low intensity returns are determined by
the palette you choose in the Sonar Colors
menu option. See Sonar Menu Tab to set the
Sonar Colors.
Sonar View: Original Palette
Strong Returns
(possibly rocks,
tree limbs, or
other structure)
Strong Return
(possibly
compacted
sediment or
rocks)
Weak Returns
(possibly
vegetation or
small fish)
RTS Window™
Sonar History:
Historical
Returns scroll
left across the
view.
HIGH
Intensity Return
MEDIUM
Intensity Return
LOW
Intensity Return
Sonar Colors: Original Palette
What’s on the Sonar Display