School Of Fish - Furuno FSV-85 Operator's Manual

4. SLANT MODE
4.22.2

School of fish

A school of fish appears as a mass of echoes on the screen. The color of the mass
shows the density of the fishes and the size of the mass how they are distributed. In
the following figures, the same school of fish is observed with two different tilt angles.
From the left figure, the operator can know the horizontal distribution of the school of
fish and from the right figure the vertical distribution.
Width (Horizontal distribution Thickness (vertical distrtribution)
Tilt: 20 degrees
Sector Center : 0 degrees
Range: 400 m
School of fish on surface
School of fish on bottom
Tilt: 40 degrees
4-34
Tilt: 90 degrees
Sector Center : 300 degrees
Range: 400 m
Bottom
Sea surface
reflections
Tilt: 5 degrees
Bottom
Bottom
School
of fish
Sea surface
reflections
Depth
Distance