Tide Vector; Dead Reckoning; Cursor Data Box; Setting Up The Alarms And Timers - Raymarine RayChart 630 Owner's Handbook Manual

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Tide Vector

When the Tide Vector is switched on, your vessel is displayed on the chart with
a solid line extending from it indicating T (tide) angle.
The tide information is calculated from the speed through the water and the
compass data, compared with COG and SOG information from the GPS. It is
therefore only displayed if all this information is available.

Dead Reckoning

If you set Dead Reckoning to ON, the chartplotter 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 depth units and scale rule are displayed at the top left of the
screen.

Setting Up the Alarms and Timers

You can set up the following navigational alarms and timers:
Parameter
Arrival Radius Alarm
Off Course Alarm
Anchor Alarm
Danger Zone Alarm
Countdown Timer
Elapsed Timer
Clock Alarm
Options Factory
Default
OFF OFF
Arrival radius value
OFF OFF
Value
OFF OFF
Value
OFF OFF
Value
OFF OFF
ON (and value)
RESET
OFF OFF
ON
RESET
OFF OFF
ON (and value)
RayChart 620 and 630
New
Default