Measuring the size of a school relative to the purse seine
Estimating the size of a school can sometimes be challenging. A single circle marker can be placed in the display presentation. The circle is drawn with the same diameter as your purse. By means of the circle you can see the size of the school relative to your purse.
Prerequisites
To provide an accurate visual presentation, the SU90 system needs to know the size of your gear.
The Fishing Gear function allows you to define the size of your trawl or purse seine. This function is opened from the Setup menu.
Context
You can only add one circle marker to the display presentation.
Image
Procedure
1 Position the cursor where you wish to place the circle marker.
2 Press Circle Marker on the Operating Panel.
or:
Right-click and select Place Circle Marker on the shortcut menu.
The size and location of the marker is defined by the choices you have made with the Fishing Gear function.
Further requirements
To delete the circle marker, press Circle Marker on the Operating Panel, or right-click to select Remove Circle Marker on the shortcut menu.