Isolating bottom fish, 104 c-series display reference manual – Raymarine C Series User Manual
Page 118

104
C-Series Display Reference Manual
Isolating bottom fish
You can separate the echoes from fish near the bottom and from the bottom itself by 
using the White Line and/or the Bottom Fill features.
Note:
White Line and Bottom Fill are selected for individual fishfinder windows.
75.9
ft
100
75
200 kHz: Auto
Gain: Auto High
75.9
ft
100
75
200 kHz: Auto
Gain: Auto High
75.9
ft
200 kHz: Auto
Gain: Auto High
75.9
ft
75
200 kHz: Auto
Gain: Auto High
D6833-3
Standard fishfinder image
The standard fishfinder image displays the 
bottom as a combination of features (mud, 
sand, fish targets etc) with various sonar 
signal strengths.
White line
When this feature is applied, a white lIne 
is drawn along the bottom (as defined by 
the digital depth value) and the detail 
below the bottom removed.
Fish near the bottom can now be seen 
more easily.
Bottom fill
When this feature is applied, the detail 
below the bottom is removed and 
replaced by a single contrasting color.
The bottom is now clearly defined and the 
fish near the bottom can be seen more 
easily.
White line and bottom fill
When both White Line and Bottom Fill 
are applied, the bottom is defined by a white 
line and the detail below it replaced by a 
single contrasting color.
Both the bottom and fish near the bottom 
are now clearly defined.
81221_4.book Page 104 Tuesday, February 28, 2006 5:24 PM
