Garmin echoMAP CHIRP 73sv Owner's Manual

Overlay Numbers: See 

. 

This might appear in the Chart Setup menu.

Chart Appearance: See 

. 

This might appear in the Chart Setup menu.

NOTE: Not all settings apply to all charts and 3D chart views. 

Some settings require external accessories or applicable 

premium charts.
From the Navigation chart or Fishing chart, select MENU > 

Chart Setup.
Satellite Photos: Shows high-resolution satellite images on the 

land or on both land and sea portions of the Navigation chart, 

when certain premium maps are used (

).

Water Overlay: Enables relief shading, which shows the 

gradient of the bottom with shading, or sonar imagery, which 

helps identify the density of the bottom. This feature is 

available only with some premium maps.

Tides & Currents: Shows current station indicators and tide 

station indicators on the chart (

) and enables the tides and current slider, 

which sets the time for which tides and currents are reported 

on the map.

Roses: Shows a compass rose around your boat, indicating 

compass direction oriented to the heading of the boat. A true 

wind direction or apparent wind direction indicator appears if 

the chartplotter is connected to a compatible marine wind 

sensor. When in sailing mode, true and apparent wind are 

shown on the wind rose.

Lake Level: Sets the present water level of the lake. This 

feature is available only with some premium maps.

Overlay Numbers: See 

.

Weather: Sets which weather items are shown on the chart, 

when the chartplotter is connected to a compatible weather 

receiver with an active subscription. Requires a compatible, 

connected antenna and an active subscription.

Chart Appearance: See 

.

You can adjust the appearance of the different charts and 3D 

chart views. Each setting is specific to the chart or chart view 

being used.
NOTE: Not all settings apply to all charts and 3D chart views 

and chartplotter models. Some options require premium maps or 

connected accessories.
From a chart or 3D chart view, select MENU > Chart Setup > 

Chart Appearance.
Orientation: Sets the perspective of the map.
Detail: Adjusts the amount of detail shown on the map, at 

different zoom levels.

Heading Line: Shows and adjusts the heading line, which is a 

line drawn on the map from the bow of the boat in the 

direction of travel, and sets the data source for the heading 

line.

Panoptix Area: Shows and hides the area being scanned by 

the Panoptix

™

 transducer. The attitude and heading reference 

system (AHRS) must be calibrated use this feature 

).

World Map: Uses either a basic world map or a shaded relief 

map on the chart. These differences are visible only when 

zoomed out too far to see the detailed charts.

Spot Depths: Turns on spot soundings and sets a dangerous 

depth. Spot depths that are equal to or more shallow than the 

dangerous depth are indicated by red text.

Shallow Shading: Sets the shades from the shoreline to the 

specified depth.

Depth Range Shading: Specifies an upper and lower depth to 

shade between.

Symbols: Shows and configures the appearance of various 

symbols on the chart, such as the vessel icon, navaid 

symbols, land POIs, and light sectors.

Style: Sets how the chart appears over 3D terrain.
Hazard Colors: Shows shallow water and land with a color 

scale. Blue indicates deep water, yellow is shallow water, and 

red is very shallow water.

Safe Depth: Sets the appearance of a safe depth for the 

Mariner’s Eye 3D chart view.
NOTE: This setting affects only the appearance of hazard 

colors for the Mariner’s Eye 3D chart view. It does not affect 

the safe water depth Auto Guidance setting or the sonar 

shallow water alarm setting.

Range Rings: Shows and configures the appearance of range 

rings, which help you to visualize distances in some chart 

views.

Lane Width: Specifies the width of the navigation lane, which is 

the magenta line in some chart views that indicates the 

course to your destination.

You can show the heading line and the course over ground 

(COG) line on the chart.
COG is your direction of movement. Heading is the direction the 

bow of the boat is pointed, when a heading sensor is connected.

From a chart view, select MENU > Chart Setup > Chart 

Appearance > Heading Line.

If necessary, select Source, and select an option:
• To automatically use the source available, select Auto.
• To use the GPS antenna heading for COG, select GPS 

Heading (COG).

• To use data from a connected heading sensor, select 

Heading.

• To use data from both a connected heading sensor and 

the GPS antenna, select COG and Heading.
This displays both the heading line and the COG line on 

the chart.

Select Display, and select an option:
• Select Distance > Distance, and enter the length of the 

line shown on the chart.

• Select Time > Time, and enter the time used to calculate 

the distance your boat will travel in the specified time at 

your present speed.

From a chart or a 3D chart view, select MENU > Waypoints & 

Tracks.
Tracks: Shows tracks on the chart or 3D chart view.
Waypoints: Shows the list of waypoints (

New Waypoint: Creates a new waypoint.
Waypoint Display: Sets how to display waypoints on the chart.
Active Tracks: Shows the active track options menu.
Saved Tracks: Shows the list of saved tracks (

).

Tracks Display: Sets which tracks to display on the chart based 

on track color.

Charts and 3D Chart Views

7