Placing A New Marker - Simrad SN90 Operator's Manual

Purse seine and trawling sonar
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A new tracked object is automatically given priority status. The priority is identified
with a "P". Only one single object can be given priority status. If you start tracking a
new target the first target will loose its priority. The same applies if you give priority
to another marker. The tracking of the first target will however not stop, and the target
marker is still shown.
Tip
Relevant information about the tracked object can be found in the bottom left corner of
the view. If you think the text is small and hard to read, double-click on the text field.
This will increase the text size.
Procedure
1
Place the cursor over the echo you wish to track.
2
Press
Target Track
or:
3
Place the cursor over the echo you wish to track.
4
Right-click to open the shortcut menu.
5
Select
Initiate Track
Further requirements
Under certain circumstances the target tracking may not follow the intended echo. This
may for example happen if the tracking area is too large. You can initiate manual
tracking by placing multiple markers on your target echo as it moves in the view. This
location of the markers in the view will then show you the historic path of the target.
Related topics
Using the markers and tracking features, page 71

Placing a new marker

One or more markers can be placed in the view to identify specific echoes. Each marker
is shown as a small triangle with or without a short identifying label.
Context
Each marker is positioned based on the two known axes in the view as well as the tilt
and bearing of the current ping.
Example
When you are manoeuvring close to the coastline, or in otherwise working in
confined waters, you may wish to avoid shallow waters and reefs. To keep
track of potentially dangerous places, you place markers on them.
381295/B
on the Operating Panel.
.
Operating procedures
73

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