Manual Garmin GPSMAP 820xs (page 18 of 46) (English)

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Safe Depth: Sets the minimum depth (chart depth datum) the

chartplotter uses when calculating an Auto Guidance line.

NOTE:

The minimum safe depth for the premium charts is 3

feet. If you enter a Safe Depth value of less than 3 feet, the

charts only use depths of 3 feet for Auto Guidance route

calculations.

Safe Height: Sets the minimum height (chart height datum) of a

bridge that your boat can safely travel under.

Shoreline Distance: Sets how close to the shore you want the

Auto Guidance line to be placed. The Auto Guidance line

may move if you change this setting while navigating. The

available values for this setting are relative, not absolute. To

ensure that the Auto Guidance line is placed the appropriate

distance from shore, you can assess the placement of the

Auto Guidance line using one or more familiar destinations

that require navigation through a narrow waterway (Adjusting

the Distance from Shore).

Adjusting the Distance from Shore

The

Shoreline Distance setting indicates how close to the shore

you want the Auto Guidance line to be placed. The Auto

Guidance line may move if you change this setting while

navigating. The available values for the Shoreline Distance

setting are relative, not absolute. To ensure the Auto Guidance

line is placed the appropriate distance from shore, you can

assess the placement of the Auto Guidance line using one or

more familiar destinations that require navigation through a

narrow waterway.

Dock your vessel or drop the anchor.

Select Settings

> Navigation > Auto Guidance > Shoreline

Distance > Normal

Select a destination that you have navigated to previously.

Select Navigate To > Auto Guidance.

Review the placement of the Auto Guidance line, and

determine whether the line safely avoids known obstacles

and the turns enable efficient travel.

Select an option:

• If the placement of the Auto Guidance line is satisfactory,

select MENU > Stop Navigation, and proceed to step 10.

• If the Auto Guidance line is too close to known obstacles,

select Settings

> Navigation > Auto Guidance >

Shoreline Distance > Far

• If the turns in the Auto Guidance line are too wide, select

Settings

> Navigation > Auto Guidance > Shoreline

Distance > Near

If you selected

Near or Far in step 6, review the placement of

the Auto Guidance line, and determine whether the line

safely avoids known obstacles and the turns enable efficient

travel.

Auto Guidance

maintains a wide clearance from obstacles in

open water, even if you set the Shoreline Distance setting to

Near or Nearest. As a result, the chartplotter may not

reposition the Auto Guidance line, unless the destination

selected requires navigation through a narrow waterway.

Select an option:

• If the placement of the Auto Guidance line is satisfactory,

select MENU > Stop Navigation, and proceed to step 10.

• If the Auto Guidance line is too close to known obstacles,

select Settings

> Navigation > Auto Guidance >

Shoreline Distance > Farthest

• If the turns in the Auto Guidance line are too wide, select

Settings >

Navigation > Auto Guidance > Shoreline

Distance > Nearest

If you selected

Nearest or Farthest in step 8, review the

placement of the Auto Guidance line, and determine

whether the line safely avoids known obstacles and the turns

enable efficient travel.

Auto Guidance maintains a wide clearance from obstacles in

open water, even if you set the Shoreline Distance setting to

Near or

Nearest. As a result, the chartplotter may not

reposition the Auto Guidance line, unless the destination

selected requires navigation through a narrow waterway.

Repeat steps 3 through 9 at least once more, using a

different destination each time, until you are familiar with the

functionality of the Shoreline Distance setting.

Tracks

A track is a recording of the path of your boat. The track

currently being recorded is called the active track, and it can be

saved. You can show tracks in each chart or 3D chart view.

Showing Tracks

From a chart or a 3D chart view, select MENU

> Waypoints

& Tracks > Tracks > On

A trailing line on the chart indicates your track.

Setting the Color of the Active Track

Select Nav Info >

Tracks > Active Track Options > Track

Color

Select a track color.

Saving the Active Track

The track currently being recorded is called the active track.

Select Nav Info > Tracks >

Save Active Track

Select an option:

• Select the time the active track began.

• Select

Entire Log.

Select

Save.

Viewing a List of Saved Tracks

Select Nav Info > Tracks > Saved Tracks.

Editing a Saved Track

Select Nav Info > Tracks > Saved Tracks.

Select a track.

Select

Edit Track.

Select an option:

• Select

Name, and enter the new name.

• Select

Track Color, and select a color.

Saving a Track as a Route

Select Nav Info

> Tracks > Saved Tracks

Select a track.

Select Edit Track

> Save Route

Browsing for and Navigating a Recorded Track

Before you can browse a list of tracks and navigate to them, you

must record and save at least one track (Tracks

Select Nav Info

> Tracks > Saved Tracks

Select a track.

Select

Follow Track.

Select an option:

• To navigate the track from the starting point used when

the track was created, select

Forward.

• To navigate the track from the destination point used

when the track was created, select Backward.

Review the course indicated by the colored line.

Follow the line along each leg in the route, steering to avoid

land, shallow water, and other obstacles.

Deleting a Saved Track

Select Nav Info > Tracks >

Saved Tracks

12 Navigation with a Chartplotter

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Others manual(s) of Garmin GPSMAP 820xs

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Garmin GPSMAP 820xs Manual

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