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19Northstar Explorer 657 Installation and Operation Manual
The 657 has two ways of navigating, going straight
to a point or following a route.
3-1-1 Navigating to a point
When the 657 is navigating to a point, the chart
and highway displays show navigation data:
A The boat position
.
B The destination point marked with a circle.
C The boat’s plotted course to the destination.
D Two CDI lines, parallel to the boat’s plotted
course, which indicate the maximum
expected deviation from the plotted course.
A
C
D
D
B
For more information, see appendix C.
If the 657 is connected to an autopilot, the 657 will
send data to the autopilot to steer the boat to the
destination. Start the autopilot before starting to
navigate to the point.
If the 657 has no autopilot, steer the boat
manually:
a use the boat position and destination on the
chart or highway displays
b or use navigation data displayed on the data
header (see section 2-7-3)
c or use COG and BRG on the compass (see
section 2-7-4).
Note:
1 If the XTE alarm is enabled, an alarm will
sound if the boat deviates too much from its
intended course (see section 17-9).
2 If the arrival radius alarm is enabled, then an
alarm will sound to show that the boat has
reached the destination (see section 17-9).
3-1-2 Going to a waypoint or to a point on
the chart
A waypoint is a position that you can set on the
657 chart, for example a fishing spot or a point on
a route (see section 5).
Going to a waypoint from the chart window
1 Go to the chart window.
2 Move the cursor to the waypoint:
either use the cursor keys or use Find (see
section 3-2-5).
3 Press
and select Goto.
Going to a waypoint from the waypoints
window
1 Go to the waypoints window.
2 Press
or to highlight the waypoint to
goto.
3 Press
and select Goto.
Going to a point on the chart
1 Switch to a chart window.
2 Move the cursor to the destination point:
either use the cursor keys or use Find (see
section 3-2-5).
!
WARNING
Make sure the course does not pass over land
or dangerous waters.
3 Press
and select Goto cursor.
Navigating
The 657 navigates to the point as described in
section 3-1-1.
Cancelling navigating
Go to a Chart window, press
and select
Cancel goto.
Tip: Before starting, create waypoints at points
of interest. Create a waypoint at the start of the
trip for you to navigate back to (see section 5-2-1).
3 Navigation: Chart
3-1 Introduction to navigating
The chart window shows the chart, the boat’s
position course and navigation data.