Target tracking
During normal operation, some echoes are clearly more interesting than others.In many situations specific echoes may be regarded as targets.To set up the ST90 system to provide such information, you can start target tracking.
The tracked target is regarded as an object, and it is identified with a circle and two lines. The two lines reflect the size of the current tracking area. By default, a new manually initiated tracked object is automatically given priority status. The bearing line is automatically locked on the object to reflects its bearing.
Relevant information about the tracked object can be found in the bottom left corner of the view. To read this information in the view's bottom left corner, you must enable it on the Cursor Readout page. This page is located in the Display Options dialog box.
Cursor Readout page
Target Track
Select Target Track to present relevant information about a tracked target or priority object. The bearing and range values are relative to your vessel.
•  Bearing (The value relates to the ship's heading.)
•  Bearing
•  Range
•  Speed
•  Course
•  Depth
The tracked target is regarded as an object, and it is identified with a circle and two lines. The two lines reflect the size of the current tracking area. The bearing line is automatically locked on the object to reflects its bearing.
Target Volume
Select Target Volume to present calculated area and volume of a tracked target or priority object.
•  Area
•  Volume
Target tracking
To start target tracking:
1 Place the cursor over the echo you wish to track. Press Target Track on the Operating Panel.
or:
2 Place the cursor over the echo you wish to track. Right-click to open the shortcut menu. Select Initiate Track.