Simrad SH90 - REV A, Operator'S Manual

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Operational procedures
How to add ’Target’ and ’Circle’ markers
1 Move the cursor on the sonar picture, and position it
wherever you wish to place the marker.
2
Press the requested marker button in the
Symbol
field on the
Operating Panel to place the marker.
About Target markers
This button places a
Target marker
at the cursor location.
A triangular symbol with a corresponding number will appear on
the screen over the target, while position data for the defined
marker is displayed in the
Objects
menu.
• The system continues to track the markers even when outside
the sonar range.
• The
Target marker
button can also be used for manual target
tracking as the system is designed to calculate the speed,
course and distance between the last two chosen targets.
• These target marker data are displayed in white figures for
15 minutes in the lower right hand corner of the horizontal
presentation.
• This function is also an effective method for determining the
distance between two selected points on the screen.
About Circle markers
This button places a
Circle marker
at the cursor location.
A circular symbol will appear on the screen at the chosen
location. The size of the symbol is equal to that of the purse
seine selected. This marker may be used to estimate the size of a
school of fish or as an indication of the size of the purse seine.
How to add an ’Own ship’ symbol
1 Press the
Own ship
button in the
Symbol
field on the
Operating Panel.
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