Investigating The Biomass - Simrad SN90 Operator's Manual

Purse seine and trawling sonar
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5
Investigate the information provided by the information pane.
By default, the depth is shown in metres. You can change the unit of measurement
on the
page. The
Units
6
Select
in the top right corner of the information pane to change the pane
Setup
parameters.
Selecting
Setup
the
Information Pane Options
parameters are to define the upper and lower depth limits most likely to be used
during the SN90 operation.
7
Select
in the top right corner to close the information pane.
Close

Investigating the biomass

The Biomass information pane displays an index of the biomass in the in the current
Inspection view. The biomass index is the
coefficient (NASC), measured with unit m
Context
The digit shown in the Biomass information pane is a calculated index.
It is possible to convert the biomass index to weight (for example in metric tons). Based
on practical use of the SN90 in different fisheries, you will soon be able to estimate the
weight when you know the type of fish and their sizes.
Procedure
1
Click in the view you want to activate.
The active view is identified with a thicker border. The information provided will
only be valid for the selected view.
2
On the top bar, select the appropriate button to open the information pane.
3
Click the bottom right corner of the information pane, and drag to requested size.
381295/B
page is located in the
Units
in the Depth information pane opens the
dialog box. The purpose of the
Installation
Bottom Detection
value, or Nautical area scattering
s
A
2
/nmi
2
.
Operating procedures
dialog box.
page in
Bottom Detection
97

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