6-1
6. RASTER (ARCS) CHARTS
6.1 ARCS Charts
Approximately 2,700 ARCS charts are available on 11 chart CD-ROMs, covering the
world's major trading routes and ports. Regionally based chart CD-ROMs RC1 to
RC10 contain standard BA navigation charts. RC11 contains ocean charts at scales
of 1:3,500,000 and smaller. ARCS charts are facsimile copies of BA paper charts, and
as such share a common numbering system. They are supplied on each Weekly Up-
date CD-ROM until incorporated into the chart CD-ROMs at the next issue.
Occasionally, it is necessary to issue new charts in advance of their intended date of
validity, for example a change in regulations commencing on a future date. In such
cases the current chart will co-exist with the new chart until the date of implementation,
the earlier chart having the suffix "X" after the chart number. The system will allow ac-
cess to both charts for the period of overlap by issue of new chart permits.
Sometimes you may wish to manually add Notices to Mariners or Navtex warnings into
your ARCS charts. In this system this is called Manual Updates. Manual updates are
valid for both ARCS and S57 charts so that you need to define them only once. Fur-
ther, manual updates are valid for all scales so that you don't need to repeat them for
charts published in different scales from the same area.
6.1.1 Chart legend of ARCS chart
The [Chart Legend] dialog box provides various information about the ARCS chart cur-
rently displayed. The information can be displayed two ways:
• Chart data for own ship position: Right click the chart area, select [Ship on center]
from the context menu, then click [Chart INFO] and [Chart Legend] on the Instant-
Access bar
â„¢
.
• Chart data for cursor position: Right click the chart area, select [Ship off center]
from the context menu, then click [Chart INFO] and [Chart Legend] on the Instant-
Access bar
â„¢
.
To close the dialog box, click the [Close] button.
Name: Name of the chart.
Title: Title of the chart.
Source: Source of the chart.
Edition Date: Date when the chart was issued.
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