Raymarine gS Series, Installation And Operation Instructions Manual, Page: 80 / 208

16.11 Overlays
The chart has a number of overlays that display different views
and information. The overlays require electronic charts with the
appropriate feature support and may also require additional
hardware and service subscriptions.
You can overlay the following data onto a 2D chart to give
greater depth of information. The overlays available are:
• * AIS — View and track AIS targets. This overlay is not
available in 3D view.
• * Radar — Overlay radar onto the chart. This overlay is not
available in 3D view.
• ** Aerial — Provides an aerial / satellite photography overlay.
• ** Aerial Overlay: — Determines the coverage of the aerial
overlay.
• * NOWRad — Provides the NOWRad weather radar overlay.
This overlay is not available in 3D view.
• Databoxes — Select whether databoxes are displayed
on-screen and what data is displayed.
• Chart Grid — Determines whether grid lines representing
longitude and latitude are displayed on the chart.
• ** 2D Shading — Determines whether terrain shading is
displayed in 2D view.
• ** Community Edits — Determines whether the community
layer is enabled or disabled.
• ** Chart Text — Determines whether chart text is displayed
(place names and so on).
• Chart Boundaries — Determines whether a line indicating
the chart boundary is displayed.
• Range Rings — View range rings in the Chart application.
This overlay is not available in 3D view.
• Safe Zone Ring — View safe zone ring. This overlay is not
available in 3D view.
• Fuel Range Ring — View the fuel range ring. This overlay is
not available in 3D view.
• Boat Size — Determines the size of the boat icon on-screen.
• Waypoint Name — Determines whether the Waypoint names
are displayed next to waypoints.
• Route Width — Determine the width of route lines on-screen.
• Track Width — Determine the width of track lines on-screen.
Note:
* Additional hardware required.
** If supported by your cartography type.
Enabling AIS in the Chart application
To enable the AIS overlay in the Chart application follow the
steps below.
To enable the AIS overlay your system must include an AIS
receiver or transceiver. The AIS overlay is not available in 3D
view.
From the Chart application menu:
1. Select
Presentation .
2. Select Overlays .
3. Select AIS: so that On is selected.
Selecting AIS: switches the AIS between On and Off.
For AIS information refer to Chapter 14 AIS function .
Radar overlay
You can overlay Radar and MARPA functions in the Chart
application to provide target tracking or to help you distinguish
between fixed objects and other marine traffic.
You can enhance the use of your chart by combining it with the
following radar features:
• MARPA.
• Radar overlay (for distinguishing between fixed and moving
objects).
Note: In order to use the Radar overlay feature you must
use an external source for magnetic heading (e.g. fluxgate
compass), you cannot use COG data for radar overlay.
Viewing MARPA targets on the chart
The Mini Automatic Radar Plotting Aid (MARPA) function is
used for target tracking and risk analysis. When MARPA targets
are being tracked they are displayed in the chart application
regardless of whether Radar overlay is switched on. Associated
MARPA functions can be accessed using the chart menu.
Using radar overlay to distinguish between fixed and
moving objects
You can overlay radar image data over your chart image allowing
better distinction between fixed objects and other marine traffic.
For best results, switch on Radar-Chart synchronization to
ensure radar range and chart scale are synchronized.
Enabling radar overlay
With the radar turned on and transmitting and with the chart
application in 2D view:
1. Select
Menu .
2. Select Presentation .
3. Select Overlays .
4. Select Radar .
The radar overlay opacity slider bar control is displayed
showing the current opacity percentage.
5. Adjust the slider bar to the required opacity, or
6. Select
Off to turn the radar overlay off.
Accessing radar controls on the chart
From the chart application:
1. Select
Menu .
2. Select Radar Options or Radar & AIS Options .
Note: Any changes made to the radar options from the chart
application will be applied to the radar application.
Chart scale and radar range synchronization
You can synchronize the radar range in all radar windows with
the chart scale.
When synchronization is switched on:
• The radar range in all radar windows changes to match the
chart scale.
• ‘Sync’ is indicated in the top left-hand corner of the chart
window.
• If you change the radar range, in any radar window, all
synchronized chart views change scale to match.
• If you change the scale of a synchronized chart window, all
radar windows change range to match.
Synchronizing the chart and radar range
In the 2D chart view:
1. Select
Menu .
2. Select Presentation .
3. Select View & Motion
4. Select Chart Sync .
5. Select Radar .
Note: Radar range synchronization is not available when the
chart motion mode is set to Auto Range.
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gS Series