Garmin echoMAP CHIRP 74cv Owner's Manual

From the Navigation chart, select a path.

Select an option:
• To view a hazard and adjust the hazard path, select 

Hazard Review.

• To change the path name, or to adjust or recalculate the 

path, select Edit.

• To delete a path, select Delete.
• To navigate the selected path, select Navigate To.

From the Navigation chart, follow the on-screen instructions 

or use the arrow keys to move the destination point to the 

new location.

Select SELECT > Move Point.

Select BACK to return to the navigation screen.

From the Navigation chart, select MENU > Cancel.
TIP: You can select BACK to quickly cancel the calculation.

You can use this feature on a route or an Auto Guidance path to 

get feedback about when you should arrive at a selected point. 

This allows you to time your arrival at a location, such as a 

bridge opening or a race starting line.

From the Navigation chart, select MENU.

If necessary, select Navigation Options.

Select Timed Arrival.
TIP: You can quickly open the Timed Arrival menu by 

selecting a point on the path or route.

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.

The Safe Depth and Vertical Clearance settings influence how 

the chartplotter calculates an Auto Guidance path. If an area has 

an unknown water depth or an unknown obstacle height, the 

Auto Guidance path is not calculated in that area. If an area at 

the beginning or the end of an Auto Guidance path is shallower 

than the Safe Depth or lower than the Vertical Clearance 

settings, the Auto Guidance path may not be calculated in that 

area, depending on the map data. On the chart, the course 

through those areas appears as a gray line or a magenta and 

gray striped line. When your boat enters one of those areas, a 

warning message appears.
NOTE: Auto Guidance is available with premium charts, in some 

areas.
NOTE: Not all settings apply to all maps.
You can set the parameters the chartplotter uses when 

calculating an Auto Guidance path.
Safe Depth: Sets the minimum water depth, based on chart 

depth data, that your boat can safely travel over.
NOTE: The minimum water depth for the premium charts 

(made before 2016) is 3 feet. If you enter a value of less than 

3 feet, the charts only use depths of 3 feet for Auto Guidance 

path calculations.

Vertical Clearance: Sets the minimum height of a bridge or 

obstacle, based on chart data, that your boat can safely 

travel under.

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

Auto Guidance path to be placed. The Auto Guidance path 

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 path using one or more familiar destinations 

that require navigation through a narrow waterway (

).

Boundaries allow you to avoid or remain in designated areas in 

a body of water. You can set an alarm to alert you when you 

enter or exit a boundary.

14

Navigation with a Chartplotter