Navionics Raychart 425, Owner'S Handbook Manual

Page: 51 / 114

Chapter 3: Operation 3-25
At waypoint ranges greater than 4nm, the symbol remains at the top of
the screen. As the waypoint range falls below 4nm, the symbol moves
down the centre line.
The checkered pattern moves down the screen to simulate movement
when SOG is greater than 2 knots.
The steering instruction is
STEER STARBOARD
if the XTE is 0.01nm or
more to port,
STEER PORT
if the XTE is 0.01nm or more to starboard or
ON
COURSE
if the XTE is less than 0.01 on either side. If no GOTO or follow
is in progress, the steering instruction is
NO TARGET
.
The graphical XTE indication places arrows either side of the steering
instruction and pointing towards it, dependent on the value of XTE.
The first arrow is shown when the XTE reaches 0.01nm, the second
at.05nm and subsequently at 0.1nm intervals.
BDI Display
The BDI display shows deviation from the bearing to waypoint and
distance to waypoint. Cross track Error, Bearing to Waypoint, Distance to
Waypoint, Time to Go, COG and SOG are also shown. Time To Go is
calculated on the basis of distance to destination and velocity made good
towards destination (Figure 3-41).
Figure 3-41: BDI Display
D4701_1