2. HORIZONTAL MODE
2-40
School of fish
A school of fish appear as a mass of echoes on the screen. By this display pattern, the
density of the school on the sonar beam can be found. To find distribution and center
point of a school of fish, try several different tilt angles.
(A) Sea surface fish
Tilt angle: 0
°
to 10
°
(B) Midwater, bottom fish Tilt angle: 30
°
or more
Fish echo which appears before bottom can be detected.
Tilt angle: 0
°
to 20
°
Fish echo which appears together with
or after bottom can be detected.
Bottom
Sea surface
reflections
School
of fish
Bottom echo not
displayed because
of decreased tilt angle.
Sea surface
reflections are
present.
Large midwater
fish school is
present.
Bottom
When the tilt angle is shallow,
the reflection echo from bottom
is weak and the fish echo
which appears from bottom
is easy to find.
School
of fish
School
of fish
Summary of Contents for FSV-35S
Page 1: ...COLOR SCANNING SONAR FSV 35S OPERATOR S MANUAL www furuno com Model ...
Page 12: ...SYSTEM CONFIGURATION x This page is intentionally left blank ...
Page 88: ...4 NUMERIC GRAPHIC DATA DISPLAY 4 4 This page is intentionally left blank ...
Page 118: ...7 RECORD RECALL OPERATION 7 8 This page is intentionally left blank ...
Page 138: ...APPENDIX 1 MENU TREE AP 6 This page is intentionally left blank ...