6. CHART OVERVIEW
6-12
6.1.7 Overlay/NAV Tools box
*
1
: Available only when the Echo page is enabled at installation. Not available for B
types.
*
2
: Available only when a EC-3000 with TCS functionality is connected to the same
network.
6.1.8 Alert box
6.1.9 Permanent warning box
6.1.10 EBL, VRM boxes
The EBL measures the bearing to an object, and the VRM measures the range to an
object. See section 6.10.
The [Overlay/NAV Tools] box sets up
the following objects and consists of
the following pages.
• TT•AIS
• Echo*
1
• Parallel index lines
• Range rings
• Predictor (predicts ship’s future
movements)
• Under the keel clearance graphic
• Anchor watch
• Look-ahead
• Curved EBL*
2
See chapter 15 for information about
objects other than TT•AIS.
The [Alert] box shows operational and system
alert messages, with alert ID no. and alert mes-
sage. See chapter 20.
The permanent warning box
displays chart-related warning
messages. Click the arrow to
show details. Click the arrow
again to minimize the box.
Page
selection
buttons
Minimize button
Page name
Click arrow to
show details.
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