Chart Alerts; Choosing Safety Contour - Furuno FCR-2107 Series Operator's Manual

9. Chart Alerts

9.1 Chart Alerts
Official S57 chart material contains depth contours which can be used for calculation of chart alerts. A chart
database also includes different types of objects which the operator can use for chart alerts. The procedure for
setting chart alerts is outlined below.
1. Choose suitable safety contour for your own ship. See section 9.1.1 Choosing safety contour.
2. Check that "Chart Alerts" is set for display. See section 9.1.3 Highlighting chart alert areas. If you want chart
alerts to be included in some other objects or areas, choose them for indication or alert. See section 9.1.2
Choosing objects used in chart alerts.
3. In the route planning mode, define a new route or choose an existing one. Make a chart alert calculation of the
route if there are indications of danger areas in the route. For more information, see section 9.4 Route Planning.
Modify your route if necessary and do the chart alert calculation again.
4. Choose route as monitored route.
5. Set watch sector for your own ship.
The system is now ready for chart alert calculation of monitored route and estimated own ship position.
9.1.1

Choosing safety contour

User has to choose safety depth suitable for the own ship. To choose suitable depth, do the following:
1. Spin the scrollwheel to display Chart Display/Info/Standard Display in the guidance area then push the left
button.
2. If the Chart page is not displayed, click the triangle mark to display it.
3. Enter desired depth in the Safety contour field.
Note: If the chart does not contain chosen depth contour, the system will automatically choose next deeper contour.
In the example above the safe water depth is set for 30 m.
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