Raytheon RayChart 620, Operation Manual

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66 RayChart 620
Heading Vector
When the Heading Vector is switched on, your vessel is displayed on
the chart with a line extending from the bow indicating the current
heading. You can select the length of the vector line; an “infinite” vector
extends to the edge of the chart or to land.
Wind Vector
When the Wind Vector is switched on, your vessel is displayed on the
chart with a line extending from it indicating the wind angle. The length
of the line indicates the current wind speed.
The vector is only displayed if the required wind data is available from a
wind instrument connected to your system.
Tide Vector
When the Tide Vector is switched on, your vessel is displayed on the
chart with a line extending from it indicating the tide angle. The length of
the line indicates the current tide speed.
The tide information is calculated from the speed through the water and
the compass data, compared with position information from the position
fixer.
Dead Reckoning
If you set Dead Reckoning to ON, the RayChart will calculate your
position by dead reckoning if position data is lost. The dead reckoned
position is calculated from your speed and heading (if available), and a
dead reckoning indicator is shown at the top left of the display.
Set Dead Reckoning to OFF if you do not wish to use a calculated
position.
Cursor Data Box
This option controls whether or not the cursor data box is displayed. If
you turn it off, only the scale rule is displayed at the top left of the screen.