How To Relocate A School Of Fish; How To Compare Concentration Of School Of Fish; How To Compare With The Fish Estimate Mark - Furuno FSV-25S Operator's Manual

2. HORIZONTAL MODE
2.15

How to Relocate a School of Fish

The offcenter feature relocates a school of fish.
1. Operate the trackball to place the cursor on the position where you want to relo-
cate the own ship mark.
2. Press the OFF CENTER key.
3. To move the own ship mark back to the screen center, press the OFF CENTER
key again.
Set cursor here,
for example.
Note 1: The offcenter feature cannot be canceled in the true motion mode. Switch the
mode to cancel the offcenter. When the OFF CENTER key is pressed, the own ship
mark moves to the cursor position.
Note 2: You can also activate the offcenter feature by long-pushing the left button with
the cursor in the echo display area. To restore the normal display, long-push the right
button.
2.16 How to Compare Concentration of School of
Fish
2.16.1

How to compare with the fish estimate mark

You can get an estimate of the volume of two schools of fish by using the two ESTI-
MATE keys as follows:
1. Operate the trackball to place the cursor on a school of fish, and then press the
ESTIMATE 1 key.
The estimate mark 1 appears on the school of fish. Relative volume is shown by
a figure between 0 and 100, below the estimate mark. When the area inside the
mark is filled in reddish brown, volume figure is said to be 100. When the estimate
mark is entered, a graph is shown at the histogram on the numeric/ graphic data
display.
2. Operate the trackball to place the cursor on another school of fish, and then press
the ESTIMATE 2 key.
Compare estimate figures for each school of fish by observing estimate mark data
and the fish histogram.
3. To turn off the estimate marks press their respective keys.
2-26
School of fish
Press OFF CENTER key
Own ship mark
School of fish
Own ship mark moves to
trackball position.