Raymarine GPS navigation User Manual download pdf (Page 32)

on track in the center. The

XTE

value will be set to “0.00 nm” since the vessel

the track line.

Ideally, the helmsman sets the vessel’s heading with his steering compass

or autopilot to the bearing shown for the

waypoint

destination and begins

watching the

CD1

scale at the top of the

NAV

display, the

XTE

digital value,

or the active graphic

CD1

screen.

The helmsman then provides steering correction to keep the boat symbol

on the track line or if watching the digital

XTE

values, keep the digital value

at or near O.OOnm. This should take the vessel in the most direct path to the

destination waypoint while correcting for wind and current offsets along the

way. A good check point of correct steering is that your COG readout

eventually reads the original bearing to the waypoint, even though your actual

compass heading may be somewhat different.

Sometimes when steering to destinations it may be necessary to change

heading to avoid obstacles or other vessels in your path. Having deviated off

of your intended track, in many cases it’s easier just to start a new track from

where you are, than to return to the old track-to-waypoint.

To start a new track, just press

thelwlkey,

followed by the numbers

of the same waypoint. Then press

theF[key

and the NAV unit will

recalculate bearings, distance and

TTG

for the new track to the old destination

waypoint. The vessel is now

the origin of the new intended track line and

the new bearing and distance to the destination is displayed. The

XTE

value

will be reset to “0.00 nm” since the vessel is

the new line.

Sometimes you may prefer to turn

OFF

the waypoint destination calculation

and

CD1

displays. To turn

OFF

the

GOT0

operation press

the/-key

and

type 0,

-1

"WPT NO

DEST"

will appear on the displays in the message

area and

waypoint

data will disappear from the

NMEA

0 183 data output.

If you have not yet stored any waypoints, you will hear multiple beeps when

thqm[key

is pressed. You will need to first save an Event or enter some

waypoint coordinates directly into the waypoint memories using one of the

methods discussed in section 3.6 of this chapter.

TheI-

key will also

give an error signal if you select an empty memory number by accident.

Waypoint coordinates must be stored in the memory before it can be selected

as a destination.

OPERATION 3-18

. .

“_

. .

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Raymarine GPS navigation User Manual Page 32

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