Jeppesen Marine Workboat Navigator 1.3 - Manual (Page 31)

23 4 - The System Menu
4
-
T
h
e
S
y
s
te
m
M
e
n
u
Figure 4.4 - EBL/VRM Display
NOTE:
The dashed line following the boat represents an active route.
You can display up to two VRM. VRM rings center around the transmitted GPS
position. Radius of each VRM ring is determined using Boat settings and GPS
position, and you can change them using the Presentation panel. When selected,
VRM distance units measure in feet and inches. You can drag the VRMs to change
their diameters in both the Radar and Chart window panes.
The default setting for both VRM 1 and 2 is Off.
The default radius for VRM 2 is 2640 feet (0.5 statute miles).
VRM 1 has 3 settings when selected:
Set to leading port head. When selected, this static field automatically defaults
to the distance from the GPS antenna position to the leading Port corner. You
cannot edit this field.
Set to leading stbd (starboard) head. When selected, this static field
automatically defaults to the distance from the GPS position to the leading
Starboard corner. You cannot edit this field.
Set to. This dynamic field allows you to manually set the VRM 1 radius by
inputting distance units in feet and inches. The automatic default value for this
field is the length from the GPS transmitted position to the end of the tow.
The radius of each VRM is displayed in a transparent box in the lower left corner of
the Chart window pane (see Figure 4.4).
•
•
•