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Generally, the NAV screens are more useful once a
waypoint
has been
entered into the units’ memories . Once a waypoint destination is selected,
the
NAVY
display will feature large readouts of the destination Bearing
(BRG)and Distance-to-go
(DTG)
to the waypoint combined with the Course
and Speed readouts. . The readouts in the upper section of the display show
the XTE,TTG, local time, and trip log distance.
The
NAV
2
display includes the same
CD1
(Course Deviation Indicator) on
the top line as on the POS screens, if a
waypoint
has been selected as a
destination.
Press the
m
key to select the
NAV3
display which features large
readouts of the
waypoint
BRG and DTG again, but combined with the digital
XTE OFF Course distance in 0.01
run
units and steering direction indicator
plus the Time-to-go (TTG) readouts.
The NAV 4 screen combines the Course-made-good (CMG) and velocity-
to- destination (VTD) readouts with the COG and SPD readouts in the large
digits. The waypoint data is displayed in the upper boxes.
The flexibility of the
NAVdisplays
should be apparant now with so many
combinations of the important navigation data available. Use all of the
displays, or use the Custom menu for NAV to select only your favorite
screens for viewing.
3.5.4
CD1
Display Mode
If the NAV screens are more useful once a waypoint has been entered into
the units’ memories, the graphic
CD1
displays are totally dependent on
waypoint navigation.
The key element of this display mode is the active view of steering down
the track lane towards the destination waypoint. As the vessel moves along,
the boat symbol orients itself to the track line showing the displacement from
OPERATION 3-12
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