NorthStar Navigation Multi-Function Unit M84 - Manual (Page 20)

Northstar M121/M84 Installation and Operation Manual 19
3 Navigation: Chart
3-1 Introduction to navigating
The chart window shows the chart, the boat’s position course and navigation data.
The Instrument has two ways of navigating, going straight to a point or following a route.
3-1-1 Navigating to a point
When the Instrument is navigating to a
point, the chart and highway windows 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.
For more information, see Appendix C.
If the Instrument is connected to an autopilot,
the Instrument 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 Instrument has no autopilot, steer the
boat manually:
a use the boat position and destination on the
chart or highway windows
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 19-10).
2 If the arrival radius alarm is enabled, then an
alarm will sound to show that the boat has
reached the destination
(see section 19-10).
3 When the destination is reached an
arrival warning appears with the option
to cancel navigation (goto or route). Yes
the navigation is cancelled, no navigation
continues however XTE and highway are no
longer displayed.
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
Instrument chart, for example a fishing spot or a
point on a route (see section 6).
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
MENU
and select Goto waypoint.
Going to a waypoint from the waypoints
window
1 Go to the waypoints window.
2 Press or to highlight the waypoint to go
to.
3 Press
MENU
and select Goto.
A
D
B
C D