Furuno TS-331A - Manual (Page 35)

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3. ECHO SOUNDER OPERATION
3.1 Echo Sounder Image
The echo sounder image is displayed in the echo sounder window at the right
side of the screen.
Ground rope
of trawl
Fish
in trawl
VERTICAL SONAR IMAGE ECHO SOUNDER IMAGE
Fish
in trawl
Ground
rope of
trawl
Echo Sounder: Range: 50 M, Gain:10 dB
Sonar settings: Range: 30 M, Gain: 70%, Speed: 03', Mode: Polar, Freq: High
Vertical sonar and echo sounder images