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Northstar M121/M84 Installation and Operation Manual22
position, and the latitude and longitude has a
cursor symbol to show this:
36° 29.841’ N or S Latitude
175° 09.012’ E or W Longitude
3-2-1 Chart modes
The Chart has two modes:
Centre on boat mode
To switch to centre on boat mode in the chart
window, press
ESC
. The boat is at the centre
of the chart. As the boat moves through the
water, the chart automatically scrolls to keep the
boat in the centre of the chart. The cursor (see
below) is turned off.
Cursor mode
The keys
and are called cursor keys. To
switch to cursor mode in the chart window, hold
down a cursor key. The cursor
appears and
moves away from the boat:
Press the key which points in the direction
that the cursor will move, for example press
to move the cursor down.
Press midway between two of the cursor
keys to make the cursor move diagonally.
Hold a cursor key down to make the cursor
move continuously across the window.
In Cursor mode:
The distance (
DST) and bearing ( BRG) of
the cursor from the boat are displayed at the
bottom corner of the window.
The chart does not scroll as the boat moves.
If the cursor reaches the edge of the window,
the chart will scroll.
For example, hold down
to move the
cursor to the right side of the window and
the chart will scroll to the left.
3-2-2 Latitude and longitude
Latitude and longitude can be displayed in
the data header. The window is degrees and
minutes to three decimal places, about 2 m (6
ft) resolution. Normally the position is the boat’s
position, and the latitude and longitude has a
boat symbol to show this:
36° 29.637’ N or S Latitude
175° 09.165’ E or W Longitude
If the cursor has been moved in the last ten
seconds, then the position is the cursor’s
3-2-3 Chart scale
Press to zoom in and display a smaller area
of the chart in more detail. Press
to zoom out
and display a bigger area in less detail.
The chart scale is displayed at the top left of the
chart:
3-2-4 Chart symbols and information
The chart shows many kinds of symbols, such as
waypoints, ports, marinas, buoys and beacons.
If necessary, press or
or to choose a chart
scale where the symbol is displayed.
To see stored information about a symbol:
1 Either move the cursor to the symbol on the
chart and wait two seconds or use Find to
move the cursor to a symbol for a port or
service (see section 3-2-5).
2 A window appears at the bottom of the
display with some information about the
symbol.
3 To see more detail about a symbol or a list of
associated items for the symbol, press
ENTER
:
i Select an item to display. If there are more
items than will fit on the window, press
or
to scroll up or down.
Select a camera icon to display a photo of
the item. If the photo is too big to fit on
the window, press
, , or to scroll
the photo.
Select Tide Station to display a tide
chart for the position (see section 14).
ii Select other items or press
ESC
to return
to the chart.
!
WARNING
When reading the boat position, make sure
the position is not the cursor position.