Sperry Marine Visionmaster FT ECDIS, Руководство пользователя

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ECDIS User Guide Electronic Range and Bearing Lines
65900012 9-1
Electronic Range and Bearing Lines Chapter 9
Two electronic bearing lines (EBL) and two variable range markers (VRM)
are available in and can be displayed simultaneously or separately on the
chart display.
When an EBL is turned “On” while its associated VRM is turned “Off”, a
small line intersects the EBL at the specified VRM range. This represents
an Electronic Range and Bearing Line (ERBL).
ERBLs display distance and bearing
between objects, they are shown as
a dashed orange line. VRMs display
a range ring indicated by long
orange dashes and is centred on the
previously created EBL.
The first and second EBL and VRM
have different mark/space ratios of
dashes. Each EBL and its
associated VRM are identified by
having the same dashed space ratio
for the line and ring.
When an ERBL is displayed the EBL bearing value (degrees) and VRM
range value (nautical miles) are displayed to the right of the buttons on the
EBL/VRM display.
An ERBL can be centred on the CCRP (carried), or offset to a referenced
position (carried or dropped) for example,
between own ship and an object, or positioned
between any two objects on the display.