Change what is displayed on the chart

From Nuno Navigator

Press the Anchoring button...

to add detail to the chart that is useful for anchoring. Anchoring mode adds the following to the chart.

	Anchorage areas
	Under sea pipelines and cables
	Nature of the sea bed
	Soundings (in feet or meters depending on the units chosen

The Anchoring button affects both the Passage Planning view and the Route Monitoring view.

Press the Overview button...

to see an inset on the bottom right corner of the Passage Planning view. This shows a wider geographic area centered on the Passage Planning view.

This is a simplified 1/6th scale view covering four times the area of the main chart. It includes Routes and Areas, but not Lines or Annotations. The gray rectangle shows the area covered by the main chart.

The red lines show the limits of areas of a particular chart quality, indicated in each area by the CATZOC value and the year the chart was produced.

CATZOC	Position Accuracy	10m Depth Accuracy	Meaning
A1	+/- 5m + 5% depth	+/- 0.6m	Full area search undertaken. Significant seafloor features detected 4 and depths measured.
A2	+/- 20m	+/- 1.2m
B	+/- 50m	+/- 1.2m	Full area search undertaken. Significant seafloor features detected 4 and depths measured.
C	+/- 500m	+/- 2.5m	Full area search not achieved, depth anomalies may be expected.
D	Worse than C	Worse than C	Full area search not achieved, large depth anomalies may be expected.
U	Unclassified