8. Vector Chart Material
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8.10 Vector Chart Display
8.10.1 Choosing vector chart material to use
To activate S57 chart material onto the display, do the following:
1. Place the cursor just above the chart scale indication in the information area.
2. Activate S57 Chart appears in the mouse functions area; push the left mouse button.
8.10.2 Choosing charts for viewing
Choosing a chart from a catalogue
To choose a chart for viewing from a catalogue, do the following:
1. Choose Chart Catalogue from the Chart menu.
2. From the Chart Catalogue dialog box, use the cursor to choose desired chart. For further details, see section
8.5.2 Catalogue of S57 cells.
3. Click the Open button.
Browsing your charts
You may view S57 charts using different positions and different scales. The basic tools for browsing charts are
Range -, Range+, Set Chart Center, ShipOffcenter, Active Scroll and TM Reset.
Activate Scroll allows you to look ahead from a place other than own ship’s current position. Spin the scrollwheel
to display Set Chart Center/Info/Activate Scroll in the mouse functions area. Move cursor to desired place on chart
and then push the right mouse button. Keep button pressed down while moving cursor over desired place. Release
right button to get chart redrawn. You can repeat this until you have desired area on screen. When true motion reset
is off, the indication “TM Reset off” or “Ship out of dsp” appears in the
information area.
Set Chart Center allows you to look ahead from a place other than your ship’s
current position. Choose Set Chart Center from the Main menu to display the
dialog box shown below. Use the scrollwheel to set the latitude and longitude
position for chart center then click the Set Center button.
Note: The chart can also be centered (with less precise positioning) by placing
the cursor at desired location, displaying Set Chart Center/Info/Activate Scroll
in the dialog box and pushing the left mouse button.
To turn off automatic true motion reset, display and click TM Reset (in the guidance area). When true motion
reset is off, the indication "Ship off screen" appears in the information area.
To restore your ship’s position to the screen center, display TM Reset/Info/ShipOffcenter in the guidance area
then push the right mouse button.
Range - and Range+ change the chart scale. If true motion reset is active, ZOOM IN and ZOOM OUT keep the
relative position of your ship with respect to the display. If true motion reset is on, ZOOM IN and ZOOM OUT keep
the relative position pointed by the cursor with respect to the display.
The system automatically chooses next larger or smaller scale. If a chart with larger compilation scale is available at
your current viewing position, the message "Larger Scale Data Exists" appears.
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