Furuno FMD3100, Operator'S Manual

Page: 49 / 395

2. OPERATIONAL OVERVIEW
2-13
2.1.7 Overlay/NAV Tools box
2.1.8 Alert box
2.1.9 Permanent warning box
2.1.10 EBL, VRM boxes
The EBL measures the bearing to an object, and the VRM measures the range to an
object. See section 2.8.
2.1.11 North mark
The north mark appears at the top left of the Chart for Radar display, is
always visible, and points in the northerly direction. At high latitudes
where north is not in a set direction, the north mark appears with the text
"at own ship" or "at center" below the mark to show the reference point.
• "at own ship": Shown when your vessel is displayed on-screen. North
is shown with your vessel as the reference point.
• "at center": Shown when your vessel is not displayed on-screen. North is shown
with the center of the screen as the reference point.
The Overlay/NAV Tools box sets up
the following:
• TT/AIS
• Echo (radar overlay)
• Parallel index lines
• Range rings
• Predictor (predicts ship’s future
movements)
• Under the keel clearance graphic
• Anchor watch
• Look-ahead
• Curved EBL
See chapter 13 and 14 for TT/AIS de-
scriptions. Refer to section 16.2 for the
radar overlay.
The [Alert] box shows operational and system
alert messages, with alert ID no. and alert mes-
sage. See chapter 20.
The permanent warning box dis-
plays chart-related warning
messages. The box cannot be
closed or minimized.
Click the arrow to show details.
Click the arrow again to mini-
mize the box.
Page
selection
buttons
Minimize button
Page name
Click arrow to
show details.
North
North mark