Garmin Headphones 451 User Manual

®
GPSMAP 400/500 series  
owner’s manual  
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Introduction  
press SELECT. Then highlight Navigation Chart, and press  
SELECT again.  
Introduction  
This manual includes information for the following products:  
GPSMAP® 420/420s  
GPSMAP 421/421s  
GPSMAP 520/520s  
GPSMAP 521/521s  
GPSMAP 550/550s  
GPSMAP 551/551s  
GPSMAP 450/450s  
GPSMAP 451/451s  
GPSMAP 525/525s  
GPSMAP 526/526s  
GPSMAP 555/555s  
GPSMAP 556/556s  
Quick Links  
Turning the Unit On or Off: page 3.  
Acquiring GPS Satellite Signals: page 5.  
Inserting and Removing SD Cards: page 6.  
Restoring Factory Settings: page 6.  
Using the Navigation Chart: page 8.  
Changing the Chart Settings: page 12.  
Navigating to a Destination: page 22  
Creating and Using Waypoints: page 24.  
Configuring System Settings: page 37.  
Using Sonar: page 44.  
Tips and Shortcuts  
Press HOME from any screen to return to the Home screen.  
Press MENU from any of the main screens to access advanced  
settings.  
Press and release the Power key to adjust the display settings.  
Alarms and Messages: page 55.  
Manual Conventions  
In this manual, when you are instructed to select an item, small  
arrows (>) appear in the text. They indicate that you should highlight  
a series of items on the screen using the Rocker, and press the  
SELECT key after each item. For example, if you see “select  
Charts > Navigation Chart,” you should highlight Charts, and  
GPSMAP 400/500 Series Owner’s Manual  
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Introduction  
Table of Contents  
ii  
GPSMAP 400/500 Series Owner’s Manual  
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Introduction  
GPSMAP 400/500 Series Owner’s Manual  
iii  
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Introduction  
Product Registration  
Help us better support you by completing our online registration  
today. Go to http://my.garmin.com. Keep the original sales receipt,  
or a photocopy, in a safe place.  
See the Important Safety and Product Information guide in the product box  
for product warnings and other important information.  
Hg  
- LaMPS iNSidE THiS PROdUCT CONTaiN  
Contact Garmin  
Contact Garmin Product Support if you have any questions while  
using your unit. In the USA, go to www.garmin.com/support, or  
contact Garmin USA by phone at (913) 397.8200 or (800) 800.1020.  
MERCURy aNd MUST bE RECyCLEd OR diSPOSEd Of  
aCCORdiNg TO LOCaL, STaTE, OR fEdERaL LawS.  
For more information go to:  
In the UK, contact Garmin (Europe) Ltd. by phone at 0808 2380000.  
In Europe, go to www.garmin.com/support and click Contact  
Support for in-country support information, or contact Garmin  
(Europe) Ltd. by phone at +44 (0) 870.8501241.  
Declaration of Conformity (DoC)  
Hereby, Garmin, declares that the GPSMAP 400 series  
and the GPSMAP 500 series is in compliance with the  
essential requirements and other relevant provisions of Directive  
1999/5/EC.  
To view the full Declaration of Conformity, see the Garmin Web site  
for your Garmin product: www.garmin.com.  
iv  
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Getting Started  
Getting Started  
Unit Overview  
POWER/  
BACKLIGHT  
RANGE (-/+)  
ROCKER  
MARK  
SELECT  
MENU  
HOME  
Power/Data  
External GPS  
antenna  
SD card slot  
GPSMAP 520/525/550/555  
GPSMAP 526 shown  
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Getting Started  
NMEA ꢁ000  
Power/Data  
GPSMAP 420/450  
NMEA ꢁ000®  
External  
GPS antenna  
Power/Data  
GPSMAP 526/556  
GPSMAP 421/451/521/551  
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Getting Started  
Turning the Unit On or Off  
To turn on the unit, press and release the Power key. When the  
Warning screen appears, select i agree to view the Home screen.  
Initializing Unit Settings  
The first time you turn on your unit, you must configure the initial  
settings.  
NOTE: The first time you turn on your unit, you must configure the  
initial settings. See “Initializing Unit Settings.”  
NOTE: You can change these settings later using the Configure  
screen (page 6).  
To turn off the unit, press and hold the Power key.  
Language—select the language to display on your screen.  
welcome—select OK.  
Store demonstration—select NO. (This option is only available  
the first time the unit is turned on.  
NMEa devices—if you have NMEA 0183 devices connected to a  
serial port, specify which ports are connected.  
aiS Receiver (is not available if you select None for NMEa  
devices)—Select yes if one of the devices connected to a serial port  
is an AIS (automatic identification system) receiver.  
Position format—specify the coordinate system to use for location  
readings.  
Time format—specify whether you want the time shown in a  
12-hour, 24-hour, or UTC (Universal Time Code) format.  
Home Screen  
System Units—specify units for on-screen measurements as  
Statute, Metric, or Nautical.  
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Getting Started  
Minimum Safe depth—select the minimum safe depth for your  
boat. Refer to your boat specifications for more information.  
Shallow water alarm—only available if you are receiving NMEA  
sonar depth data. Select yes or No.  
Minimum Overhead Clearance—select the minimum overhead  
clearance for your boat. Refer to your boat specifications for more  
information.  
aiS alarm Range—select the distance in which an alarm will  
sound if an AIS vessel nears your boat (page 43).  
aiS alarm Time To—select the time within which an alarm will  
sound if an AIS vessel is on track to intersect the Safe Zone around  
your boat (page 43).  
To allow the unit to automatically adjust the backlight based on  
ambient light, select auto backlight (automatic backlight is  
available only on the GPSMAP 525, 526, 555, and 556).  
If a water speed wheel is detected, a message will ask if you want to  
calibrate it now. Select yes or No.  
To switch between Day and Night mode:  
Adjusting the Backlight  
1. Press and release the  
Power key.  
1. Press and release the  
Power key.  
2. Select Color Mode.  
2. Select Backlight.  
3. Press left or right on the Rocker to switch between modes.  
4
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Getting Started  
POwER/baCKLigHT—Press and hold to turn the unit on or off;  
press and release to adjust the backlight and day and night modes.  
RaNgE (-/+)—Press to adjust the range of the sonar. Press to zoom  
in or out on a chart. Press to page up or down on lists.  
ROCKER—Press up, down, left, or right to move through menus,  
highlight fields, and enter data.  
MaRK—Press to mark a waypoint.  
SELECT—Press to select highlighted items.  
HOME—Press to return to the Home screen.  
MENU—Press to access additional settings and configuration  
options; press to return to the previous screen when indicated.  
Using the Keypad  
POWER/  
BACKLIGHT  
Acquiring GPS Satellite Signals  
When you turn on the unit, the GPS receiver must collect satellite  
data and establish the current location. When the unit acquires  
satellite signals, the signal strength bars at the top of the Home  
RANGE (-/+)  
ROCKER  
MARK  
screen are green  
green bars disappear  
question mark.  
. When the unit loses satellite signals, the  
and the position icon displays a flashing  
SELECT  
MENU  
HOME  
For more information about GPS, visit the Garmin Web site at  
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Getting Started  
Using Simulator Mode  
Restoring the Original Factory Settings  
Simulator mode turns the GPS receiver off for use indoors or for  
practice. The unit does not track satellites in simulator mode.  
NOTE: This procedure deletes any information you have entered.  
1. From the Home screen, select Configure > System > System  
Information > Factory Settings.  
CaUTiON: Do not try to navigate using simulator mode because the  
GPS receiver is turned off. Any satellite signal-strength bars shown  
are only simulations and do not represent the strength of actual  
satellite signals.  
2. Select Yes to restore all factory settings, or select No to cancel.  
The unit reboots and prompts you to adjust unit settings (page 3).  
Inserting and Removing SD Cards  
Your unit supports Secure Digital (SD) cards. Insert optional  
BlueChart® g2 Vision® SD cards to view high-resolution satellite  
imagery and aerial reference photos of ports, harbors, marinas and  
other points of interest. Insert blank SD cards to transfer data such as  
waypoints, routes, and tracks to another compatible Garmin unit or  
a computer (page 34). The SD card slot is located on the lower-right  
corner of the unit.  
To turn on Simulator mode:  
1. From the Home screen select Configure > System > Simulator.  
2. Select Setup to set speed, track control, and position.  
Viewing System Information  
You can view the software version, the basemap version, and the  
unit ID number for your chartplotter. You may need this information  
to update the system software or to purchase additional map data  
information.  
To insert the SD card, open the access door and press the SD card in  
until it clicks. Press the card in again and release it to eject it from  
the chartplotter.  
From the home screen, select Configure > System > System  
Information.  
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Getting Started  
Sonar—set up and access sonar information (page 44).  
NOTE: This option is available only if you have a unit with a  
built-in sounder (model numbers ending with an “s” such as the  
GPSMAP 526s), or if you have a transducer that is connected to an  
external sounder, such as the Garmin GSD 20/21/22.  
Chart/Sonar—set up the screen to view a chart and sonar in a  
split screen (page 21).  
where To?—access navigation features (page 22).  
information—view information including dashboard options,  
tides, currents, celestial data, user data, and information about  
other vessels (page 30).  
NOTE: If using an SD card to transfer waypoints from MapSource®,  
update to the most-current version of MapSource by clicking Help  
> Check for Software Updates, or check the Garmin Web site at  
Configure—access unit and system settings (page 37).  
Understanding the Home Screen  
Use the Home screen to access all other screens. Press HOME from  
any screen to return to the Home screen.  
Charts—selects Navigation, Fishing, Perspective 3D, Mariner’s  
Eye 3D, Fish Eye 3D, and Split Navigation charts.  
NOTE: Mariner’s Eye 3D, Fish Eye 3D, and Fishing charts are  
available only if you use a BlueChart g2 Vision SD card.  
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Using Charts  
Mariner’s Eye 3d—provides a view from above and behind  
the boat as a three-dimensional navigation aid. The BlueChart  
g2 Vision Mariner’s Eye 3D is more detailed than the preloaded  
data.  
Using Charts  
Your chartplotter has a worldwide map, and a built-in detailed map  
of US inland lakes, or BlueChart g2 cartography for either the USA  
shoreline or a specific country.  
NOTE: If you are using a GPSMAP 420/421/520/521/525/526  
(including “s” models), you must insert an optional BlueChart g2  
Vision preprogrammed SD card to view detailed Navigation and  
Mariner’s Eye charts.  
Navigation Chart—displays all relevant navigation data  
available on your preloaded maps, including buoys, lights,  
cables, depth soundings, marinas, and tide stations, in an  
overhead view.  
Using the Navigation Chart  
Use the Navigation chart to plan your course, to view map  
information, and as a navigational aid.  
Perspective 3d—provides a view from above and behind the  
boat (according to your course), and provides a visual navigation  
aid.  
To access a Navigation chart, from the Home screen, select  
Charts > Navigation Chart.  
Split Navigation Chart—displays two different zoom levels of  
the Navigation chart at the same time.  
Fishing charts and Fish Eye 3D views are available when using  
optional BlueChart g2 Vision preprogrammed SD cards.  
fishing Chart—provides a view of the chart with enhanced  
bottom contours and without navigational data. This chart works  
well for offshore deep-sea fishing.  
fish Eye 3d—provides an underwater 3D view that visually  
represents the sea floor according to the information on the chart.  
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Using Charts  
Other Vessels—view information about other vessels if  
Your boat  
your chartplotter is connected to an external AIS (Automatic  
Identification System) or DSC (Digital Selective Calling) device  
(page 49).  
Tide station  
Beacon  
Exposed  
wreck  
Stop Navigation—stop navigating to your destination (only  
available while navigating).  
data bars—show or hide cruising, navigation, fishing, fuel, or  
sailing numbers.  
Light  
Marina  
services  
Exposed  
rock  
Zoom scale  
Navigation Chart with g2 Vision  
Navigation Chart Menu  
To access additional settings or options for the Navigation chart,  
Data  
bars  
press MENU.  
full Screen Map—view the Navigation or Fishing chart in full-  
screen mode, without numbers.  
waypoints & Tracks—view, add, and configure waypoints  
(page 24) and tracks (page 26).  
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Using Charts  
Cruising—turn the GPS Speed, GPS Heading, Depth, and GPS  
Waypoint VMG appears under these conditions:  
Position data bar on or off. Select data bar Setup to configure  
the position of the data on the screen.  
The Route Leg data bar displays Waypoint VMG when you are  
navigating a route or an automatic guidance line.  
Navigation—turn the Distance to Destination, Arrival, Off  
Course, and Bearing data bar on or off. Select auto to turn on the  
Navigation data bar whenever you are navigating to a destination.  
Select data bar Setup to configure the Route Leg, Next Turn,  
and Destination options.  
The Sailing data bar displays Waypoint VMG when you are  
navigating a route or an automatic guidance line, and you turn off  
the Route Leg data bar.  
Wind VMG appears under these conditions:  
The Sailing data bar displays Wind VMG when you are not  
navigating a route or an automatic guidance line.  
fishing—turn the Depth, Water Temperature, and Water Speed  
data bar on or off.  
The Sailing data bar displays Wind VMG when the Route Leg  
data bar is on.  
fuel—turn the Fuel Rate, Remaining Fuel, Range, and Fuel  
Economy data bar on or off.  
Chart Setup—customize the Navigation chart settings (page 12).  
Sailing—turn the Water Speed, Wind Speed, Wind Angle, and  
Wind Velocity Made Good (VMG) data bar on or off. Select  
wind to toggle between True and Apparent wind speed and wind  
angle.  
Understanding Chart Data  
BlueChart g2 and BlueChart g2 Vision charts use graphic symbols  
to denote map features that follow the standards for USA and  
international charts.  
Understanding How Wind VMG and Waypoint  
VMG Appear in the Data Bars  
The chartplotter automatically switches between displaying Wind  
Other features common to most charts include depth contour  
lines (with deep water represented in white), intertidal zones, spot  
soundings (as depicted on the original paper chart), navigational aids  
and symbols, and obstructions and cable areas.  
Velocity Made Good (VMG) and Waypoint VMG in the data bars.  
ꢀ0  
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Using Charts  
To pan the map, press up, down, right, or left on the Rocker.  
Navigating to a Point on the Chart  
1. From the Home screen, select Charts.  
2. Select Navigation Chart, Fishing Chart, or Split Navigation  
Chart.  
3. Use the Rocker to select the point on the chart to which you want  
to go.  
Map  
pointer  
4. Press SELECT.  
5. Select Navigate To.  
6. Select Go To (or Guide To when using a preprogrammed  
BlueChart g2 Vision card for Automatic Guidance).  
7. Follow the colored line on the screen to the destination.  
To create a route to a point on the chart, see page 25.  
Panning the Navigation Chart  
To stop panning, press MENU, and then select Stop Panning.  
Use the Rocker to move the map pointer ( ) away from your  
current location and to scroll to other areas on the Navigation chart.  
As you pan past the edge of the current map display, the screen  
scrolls forward to provide continuous map coverage.  
Zooming In and Out on the Map  
The Range (-/+) keys control the zoom level, indicated by the scale  
at the bottom of the Navigation chart (  
). The bar under the  
number represents that distance on the map.  
As you move the map pointer, you can view the distance and  
bearing from your current location and the map pointer’s location  
coordinates in the lower-right corner of the map.  
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Using Charts  
Accessing Additional Object Information  
Use the map pointer ( ) to view information about on-screen map  
items, waypoints, and charts.  
Viewing Tide-Station Information  
Tide-station information appears on the chart with a detailed icon  
showing the relevant tide level. You can view an in-depth graph for  
a tide station to help predict the tide level at different times or on  
different days.  
To access additional object information:  
1. On the Navigation chart, highlight an item with the map pointer,  
and press SELECT.  
Use the map pointer ( ) to highlight a tide-station icon ( ),  
and press SELECT.  
For more information about tides, see page 32.  
Changing the Navigation Chart Settings  
To change chart settings from the home screen, select Charts >  
Navigation Chart > MENU > Chart Setup.  
Selected  
item  
Photos—sets the high-resolution satellite images to Off, Land  
Only, or On. High-resolution satellite imagery is only available  
while using a BlueChart g2 Vision SD card.  
Tides/Currents—turns tides and currents on or off (page 32).  
Service Points—turns marine service points on or off.  
Roses—displays a compass rose around your boat, indicating  
compass direction. True wind or apparent wind direction displays if  
the unit is connected to a compatible marine wind sensor.  
2. Select the item. If more than one item is in the area, select  
Review, and then select the item.  
ꢀꢁ  
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Using Charts  
detail—adjusts the amount of detail shown on the map at different  
zoom levels.  
Press left on  
the Rocker to  
decrease map  
detail.  
Press right on  
the Rocker to  
increase map  
detail.  
Wind direction  
indicator  
Compass rose  
Changing the Chart Appearance  
From the Home screen, select Charts > Navigation Chart >  
MENU > Chart Setup > Chart Appearance.  
Heading Line—draws an extension line from the bow of the boat in  
the direction of travel.  
Orientation—changes the perspective of the map display.  
North Up—sets the top of the map display to a north heading.  
Head Up—sets the map display to the current track heading.  
Off—turns the heading line off.  
distance—sets the distance to the end of the heading line.  
Course Up—sets the map so the direction of navigation is  
always up. The heading line appears vertically on the screen if  
shown.  
Time—sets the amount of time until you reach the end of the  
heading line.  
world Map—displays a basic world map or satellite imagery (when  
full world Map is selected).  
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Using Charts  
Spot depths—turns spot soundings on or off and sets a dangerous  
depth.  
Using the Split Navigation Chart  
Use the Split Navigation chart to view two different zoom levels of  
the Navigation chart at the same time.  
Safety Shading—identifies a selected depth. Areas with depths  
shallower than the specified value are shaded in blue while areas  
with depths greater than the specified value are shaded in white. The  
shading is always drawn at, or deeper than, the selected depth.  
Symbols—changes symbol preferences.  
Navaid Size—adjusts the size of the navaid symbols shown on  
the map.  
Navaid Type—selects the navaid symbol set (NOAA or IALA).  
Land POis—turns the display of land POIs (points of interest)  
on or off.  
Light Sectors—turns the sector in which a navigational light is  
visible on or off. Selecting On filters out light sectors depending  
on the zoom level.  
Split Navigation Chart  
(with a BlueChart g2 Vision card)  
Chart borders—turns chart borders on when using a BlueChart  
g2 Vision SD card and you want to see what area the maps cover.  
The top half of the screen is zoomed in 10 times closer than the  
bottom half of the screen. The Range (-/+) keys control the zoom  
level.  
Photo Points—turns camera icons (page 20) on or off when  
using a BlueChart g2 Vision SD card.  
Press MENU to view additional settings (page 9).  
ꢀ4  
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Using Charts  
waypoints—view, sort, or filter existing waypoints, or create  
new ones.  
Using Perspective 3D  
Perspective 3D provides a view from above and behind the boat  
(according to your course), and provides a visual navigation aid.  
This view is helpful when navigating tricky shoals, reefs, bridges, or  
channels, and is beneficial when trying to identify entry routes and  
exit routes in unfamiliar harbors or anchorages.  
New waypoint—edit, delete, or create a new waypoint.  
active Tracks—manage tracks (page 26).  
Saved Tracks—view a list of tracks that have been saved.  
Other Vessels—view information about other vessels. To view  
information about other vessels, your unit must be connected to an  
external AIS (Automatic Identification System) or DSC (Digital  
Selective Calling) device.  
To access the Perspective 3D screen from the Home screen,  
select Charts > Perspective 3D.  
Press the Range (+) key to move the view closer to your boat and  
lower to the water. Press the Range (-) key to move the view away  
from the boat.  
data bars (page 9)—show or hide cruising, navigation, fishing,  
fuel, sailing numbers, or compass tape. When on, compass tape  
is displayed at the top of the Perspective 3D screen to provide a  
graphical representation of heading.  
To view details about navaids such as beacons, lights, and  
obstructions:  
1. Use the Rocker to point to the navaid. When the cursor is over  
the navaid, the navaid is highlighted.  
Chart appearance—customize the Perspective 3D chart.  
2. Press SELECT to view details about the navaid.  
Range Rings—toggles the range rings on or off to provide  
distance measurement.  
Perspective 3D Settings  
To access additional settings or options from the Perspective 3D  
screen, select MENU.  
Lane width—adjusts the width of the course line drawn when  
navigating. This setting also affects routes (Route To), but does  
not affect automatic guidance (guide To).  
waypoints & Tracks—view, add, and configure waypoints and  
tracks.  
Tracks—turn tracks on or off (page 26).  
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Using Charts  
Press the Range (+) key to move the view closer to your boat  
and lower to the water. Press the Range (-) key to move the view  
Using Mariner’s Eye 3D  
A BlueChart g2 Vision SD card offers Mariner’s Eye 3D, that  
provides a detailed three-dimensional view from above and behind  
the boat (according to your course), and provides a visual navigation  
aid. This view is helpful when navigating tricky shoals, reefs,  
bridges, or channels, and is beneficial when trying to identify entry  
and exit routes in unfamiliar harbors or anchorages.  
away from the boat. The scale (  
the bottom of the screen.  
) temporarily appears at  
To view details about navaids such as beacons, lights, and  
obstructions:  
1. Use the Rocker to point to the navaid. When the cursor is over  
the navaid, the navaid is highlighted.  
2. Press SELECT to view details about the navaid.  
Mariner’s Eye 3D Settings  
To access additional settings or options from the Mariner’s Eye 3D  
screen, press MENU.  
For settings and options related to Waypoints & Tracks, Other  
Vessels, and Data Bars, see “Navigation Chart Menu” on page 9.  
To customize the appearance of the Mariner’s Eye 3D screen,  
select MENU > Chart Appearance.  
Style—Selects how chart data is displayed over 3D terrain.  
Classic—uses color schemes to indicate 3D terrain.  
Charts—provides chart information in a 3D view.  
Mariner's Eye 3D  
Navigation Chart  
Photos—provides satellite photo imagery in addition to chart  
information.  
ꢀꢃ  
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Using Charts  
Hazard Colors—Turns hazard colors on or off. The Off setting  
shows the land as seen from the water. The On setting indicates  
shallow water and land with a color scale. Blue indicates deep water,  
yellow is shallow water, and red is very shallow water.  
Lane width—adjusts the width of the course line drawn when  
navigating. This setting also affects routes (Route To), but does not  
affect automatic guidance (guide To).  
Using Fish Eye 3D  
Using the depth contour lines of the BlueChart g2 Vision  
cartography, Fish Eye 3D provides an underwater view of the sea  
floor or lake bottom. Use the Range keys to adjust the view.  
NOTE: You must have an “s” series unit (such as a GPSMAP 420s)  
and a transducer wired through a marine network to receive sonar  
information.  
Fish Eye 3D Settings  
To access additional settings or options for the Fish Eye 3D screen,  
press MENU.  
View—selects a fish eye view of fore, aft, port, or starboard.  
Sonar Cone (only available if sonar is present)—turns a cone that  
Mariner’s Eye 3D  
shows the area covered by your transducer on or off.  
(Water Hazard Colors)  
Range Rings—toggles the range rings on or off to provide distance  
measurement.  
fish Symbols (only available if sonar is present)—displays  
suspended targets (such as fish). Targets are indicated by red, green,  
and yellow spheres. Red indicates the largest targets and green  
indicates the smallest targets.  
Safe depth—adjusts the depth at which red indicates dangerous  
depths.  
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Using Charts  
The Fishing chart uses detailed bathymetric data on a  
preprogrammed BlueChart g2 Vision SD card, and is best for  
offshore deep-sea fishing.  
Suspended  
targets  
From the Home screen, select Charts > Fishing Chart.  
Fish Eye 3D  
Tracks—turns the track log on or off.  
data bars—show or hide cruising, navigation, fishing, fuel, or  
sailing numbers (page 9).  
To access additional settings or options from the Fishing chart,  
press MENU.  
Using Fishing Charts  
Use the Fishing chart for a detailed, unobstructed view of the bottom  
contours on the chart.  
Navaids—displays navigational aids, such as beacons, lights, and  
obstructions.  
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Using Charts  
For settings and options related to Full Screen Map, Waypoints &  
Tracks, Other Vessels, and Data Bars, see “Navigation Chart Menu”  
on page 9.  
NOTE: When enabled, the high-resolution satellite images are only  
present at lower zoom levels. If you cannot see the high-resolution  
images in your BlueChart g2 Vision region, either zoom in further  
using the Range (+) key, or set the detail level higher (page 13).  
To customize the appearance of the Fishing Chart screen, select  
MENU > Chart Setup (page 12).  
Enabling High Resolution Satellite Imagery  
You can overlay high-resolution satellite images on the land, sea, or  
both portions of the Navigation chart when using a preprogrammed  
BlueChart g2 Vision SD card.  
To enable satellite imagery:  
1. While viewing the Navigation chart, press MENU.  
2. Select Chart Setup > Photos.  
Photo Overlay Off  
Land Only Photo Overlay  
3. Select one of the following:  
Off—standard chart information is shown on the map.  
Land Only—standard chart information is shown on water  
with photos overlaying the land.  
On—photos overlay both the water and the land at a specified  
opacity. The higher you set the percentage, the more the  
satellite photos will cover both land and water.  
Photo Overlay at 50%  
Photo Overlay at 100%  
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Using Charts  
To access aerial photos from the Navigation chart:  
Use the Rocker to highlight a camera icon with the pointer, and  
select Aerial Photo or Review.  
Viewing Aerial Photos  
Preprogrammed BlueChart g2 Vision SD cards contain aerial  
photographs of many landmarks, marinas, and harbors. Use these  
photos to help orient yourself to your surroundings or to acquaint  
yourself with a marina or a harbor prior to arrival.  
Perspective  
Overhead  
Viewing Current-station Information  
If current stations are available in your BlueChart g2 Vision region,  
they appear on the Navigation chart as highlighted  
arrows. These detailed icons show the speed and  
Aerial Photo  
NOTE: Use the Range (-/+) keys to zoom in and out while viewing  
the aerial photo on the full screen.  
direction of the current at a glance. Select Review or  
the name of the station to display a current graph.  
Current-station  
icon  
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Using Charts  
Detailed Road and POI Data  
BlueChart g2 Vision contains detailed road and points of interest  
(POI) data, which includes highly detailed coastal roads and  
POIs such as restaurants, lodging, local attractions and more. For  
instructions on searching for, and navigating to, these POIs, see the  
“Where To?” section beginning on page 22.  
Navigation  
chart screen  
Using Automatic Guidance  
Sonar  
screen  
Automatic Guidance automatically creates and suggests routes based  
on available BlueChart g2 Vision chart information. See page 38 for  
instructions on setting up Automatic Guidance for your boat. The  
“Where To?” section on page 22 has more information on how to  
use Automatic Guidance.  
Navigation/Sonar Combination  
To access additional settings or options for the chart/sonar  
screen, press MENU.  
Using the Chart/Sonar Screen  
NOTE: The Chart/Sonar screen, like the Sonar screen, is only  
available when using a sonar capable unit with a transducer attached.  
Use the Chart/Sonar screen to view the Navigation chart, Fishing  
chart, Mariner’s Eye 3D, or Fish Eye 3D and sonar at the same time.  
To view a split chart/sonar screen:  
1. From the Home screen, select Chart/Sonar.  
2. Select the type of chart on the split screen.  
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Where To?  
Navigating to a Destination  
Where To?  
Use the where To? option on the Home screen to search for, and  
navigate to, waypoints, routes, tracks, and services such as nearby  
fuel, repairs, and ramps.  
You can search for, and navigate to, waypoints, routes, tracks, and  
services such as nearby fuel, repairs, and ramps.  
To begin navigating:  
1. From the Home screen, select Where To?.  
NOTE: You must create waypoints and routes before you can  
navigate to them.  
2. Select the category to which you want to navigate.  
You can navigate to a destination using one of three methods: go  
To, Route To, or guide To.  
go To—takes you directly to the destination.  
Route To—creates a route from your location to a destination,  
allowing you to add turns to the route.  
guide To—searches BlueChart g2 Vision chart data to suggest  
the best path to your destination. You must be using a BlueChart  
g2 Vision SD card for this option to appear.  
CaUTiON: guide To does not ensure obstacle and bottom  
clearance. For safety, always resolve any discrepancies or questions  
before continuing navigation.  
3. Select a destination.  
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Where To?  
To stop navigating:  
NOTE: Press the right or left arrow to view additional information  
Press MENU, and select Stop Navigating.  
or to display the location on a chart.  
To search for a destination by name:  
4. Select Navigate To.  
1. From the Home screen, select Where To? > Search by Name.  
5. Select Go To.  
2. Use the Rocker to select characters and spell at least a portion  
OR  
of the name of your destination.  
Select Guide To when using a preprogrammed BlueChart g2  
Vision card to use Automatic Guidance.  
3. Press SELECT to view the 50 nearest destinations that contain  
your search criteria.  
6. Follow the colored line on the screen to the destination.  
4. Select the location > Navigate To > Go To or Route To (or  
Guide To when using a preprogrammed BlueChart g2 Vision  
card).  
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Where To?  
To edit an existing waypoint:  
1. From the Navigation chart, use the map pointer ( ) to highlight  
the waypoint on the Navigation chart.  
OR  
Creating and Using Waypoints  
You can store up to 1,500 waypoints (3,000 waypoints for models  
GPSMAP 421/451/521/551/526/556, including “s” models) with a  
user-defined name, symbol, depth, water temperature, and comment  
for each waypoint.  
From the Home screen, select Information > User Data >  
Waypoints.  
2. Select the waypoint you want to edit.  
To create a new waypoint:  
1. From the Home screen, select Charts > Navigation Chart.  
3. Select Edit Waypoint.  
2. Use the map pointer ( ) to select the location you want to  
designate as a waypoint.  
4. Select the waypoint attribute you want to change (Name,  
Symbol, Depth, Water Temp, Comment, or Position).  
3. Press SELECT.  
To move the waypoint on the Navigation chart:  
4. Select Create Waypoint.  
1. Select the waypoint on the Navigation chart.  
2. Select Review. (The Review button is only shown when more  
To mark your current location as a waypoint:  
than one waypoint is in the vicinity.)  
From any screen, press the MARK key.  
3. Select the button for the waypoint you want to edit.  
Edit Waypoint—designate a specific name, symbol, water  
depth, or water temperature.  
4. Select Move.  
Delete—deletes the waypoint.  
5. Press SELECT to save the new location, or press MENU to  
cancel the move.  
Man Overboard—designates the current location as a Man  
Overboard location.  
To view a list of all waypoints:  
From the Home screen, select Information > User Data >  
Waypoints.  
Right or Left Arrow—switches between waypoint information  
and the Navigation chart.  
NOTE: Selecting MaRK creates a waypoint only at your present  
location.  
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Where To?  
To delete a waypoint or an MOB:  
1. From the Navigation chart, use the map pointer ( ) to highlight  
the waypoint or the MOB on the Navigation chart.  
OR  
From the Home screen, select Information > User Data >  
Waypoints.  
2. Select the waypoint or the MOB you want to delete.  
3. Select Review > Delete (The Review button is only shown when  
more than one waypoint is in the vicinity.)  
Creating and Using Routes  
You can create and store up to 20 routes (100 routes for models  
GPSMAP 421/451/521/551/526/556, including “s” models), with up  
to 250 waypoints each.  
5. Press MENU to cancel, to undo the last turn, or to begin  
navigating the route.  
To create a route from your present location:  
1. From the Navigation chart, use the map pointer ( ) to select  
your destination.  
To create a route in another location:  
1. From the Home screen, select Information > User Data >  
Routes > New Route.  
2. Select Navigate To > Route To.  
2. Select Use Chart or Use Waypoint List.  
3. Use the map pointer ( ) to select the location at which you  
want to make the last turn toward your destination.  
3. If you select Use Chart, use the map pointer ( ) to select the  
initial location at which you want to start the new route. If you  
select Use Waypoint List, select the first waypoint on the route.  
4. Press SELECT. Repeat this step to add additional turns.  
4. Choose the location of the first turn and press SELECT. Repeat  
until the route is complete.  
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Where To?  
5. Select MENU to save the route.  
To bypass a waypoint on a route:  
1. Create a route as previously described.  
6. Select the route to edit the route, delete the route, or navigate to  
the route.  
2. Select the waypoint that follows the waypoint you are bypassing.  
3. Select Navigate To > Go To (or Route To).  
To create a route using Automatic Guidance (when using a  
preprogrammed BlueChart g2 Vision card):  
Using Tracks  
1. From the Navigation chart, select your destination.  
A track is a recording of your path. The track currently being  
recorded is the active track. An active track can be saved.  
2. Select Navigate To > Guide To. Your route is calculated.  
NOTE: You can change the automatic guidance path to a route by  
selecting the end of the path and selecting Navigate To > Route To.  
The automatic guidance path stays on the screen, allowing you to  
trace it while creating a route.  
To turn on the track log:  
From the Navigation or Perspective 3D chart, select MENU >  
Waypoints & Tracks > Tracks > On. A trailing line on the chart  
indicates your track.  
To edit a route:  
1. From the Home screen, select Information > User Data >  
Routes.  
2. Select the route to edit.  
3. Select Edit Route. You can edit the route name or use the chart  
or turn list to edit the route turns.  
To delete a route:  
1. From the Home screen, select Information > User Data >  
Routes.  
2. Select the route to delete.  
3. Select Delete > OK.  
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Where To?  
To clear the active track:  
From the Navigation or Perspective 3D chart, select MENU >  
Waypoints & Tracks > Active Tracks > Clear Active Track.  
The track memory is cleared; the current track continues to be  
recorded.  
To retrace the active track:  
1. From the Navigation or Perspective 3D chart, select MENU >  
Waypoints & Tracks > Active Tracks > Follow Active Track.  
2. Select either the time the current track began or Entire Log.  
3. Follow the colored line on the screen.  
To edit or delete a saved track:  
1. From the Navigation or Perspective 3D chart, select MENU >  
Waypoints & Tracks > Saved Tracks.  
To save the active track:  
1. From the Navigation or Perspective 3D chart, select MENU >  
Waypoints & Tracks > Active Tracks > Save Active Track.  
2. Select the track you want to edit or delete.  
3. Select Edit Track to change the name or color of the track, or  
select Delete to delete the track.  
2. Select either the time the current track began (or Midnight, if  
shown) or Entire Log.  
To set active Track Options:  
From the Navigation or Perspective 3D chart, select MENU >  
Waypoints & Tracks > Active Track > Active Track Options.  
3. To name the track, change the color of the track, or save it as a  
route, select Edit Track.  
Record Mode—select Off, fill, or wrap.  
Off—does not record a track log.  
fill—records a track log until the track memory is full.  
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Where To?  
wrap—continuously records the track log, replacing the oldest  
track data with new data.  
Mariner’s Eye 3d—provides a view from above and behind the  
boat for a three-dimensional navigation aid. The BlueChart g2  
Vision Mariner’s Eye 3D is more detailed than the preloaded data  
(page 16).  
Record interval—defines the frequency at which the track plot is  
recorded. Recording more-frequent plots is more accurate but fills  
the track log faster.  
fish Eye 3d—provides an underwater 3D view that visually  
represents the sea floor according to the information on the chart.  
interval—sets whether the interval is determined by distance,  
time, or resolution. (Select Change to set the value.)  
fishing Charts—provides a view of the chart with enhanced  
bottom contours and without navigational data. This chart works  
well for offshore deep-sea fishing.  
distance—records the track based on a distance between points.  
Time—records the track based on a time interval.  
High Resolution Satellite imagery—provides high-resolution  
satellite images for a realistic view of the land and water on the  
Navigation chart.  
Resolution—records the track plot based on a variance from  
your course. This setting is recommended for the most-efficient  
use of memory. The distance value (Change) is the maximum  
error allowed from the true course before recording a track point.  
aerial Photos—provides a view of marinas and other  
navigationally significant aerial photos to help you visualize your  
surroundings.  
Change—sets the value of the interval.  
Track Color—sets the color of the track plot.  
detailed Roads and POi data—provides a view of roads,  
restaurants, and other points of interest (POIs) along the shore.  
Using BlueChart g2 Vision  
Optional BlueChart g2 Vision preprogrammed SD cards allow  
you to get the most out of your unit. In addition to detailed marine  
charting, BlueChart g2 Vision has the following features:  
Current data—provides a view of current-station information  
(page 32).  
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Where To?  
auto guidance—uses the chart data and specified boat safe  
depth to determine the best course to your destination (page 38).  
NOTE: You cannot transfer BlueChart g2 Vision data from the SD  
card to your computer for backup or viewing purposes. You can only  
use the SD card on BlueChart g2 Vision-compatible Garmin GPS  
units.  
Navigating with a Garmin Autopilot  
When you start any type of navigation (go To, Route To, guide  
To, or follow Track), if you are connected to a compatible Garmin  
autopilot, you are prompted to engage the autopilot.  
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Viewing Information  
Viewing Numbers  
Viewing Information  
Use the Information screen to access information about dashboard  
gauges, tides, currents, user data, and other vessels.  
You can view and customize numerical data including depth, GPS  
information, and navigation information. You can customize the  
number of fields shown and the type of information shown in each  
field. You can view up to six fields of numerical information.  
Viewing a Compass  
From the Home screen, select Information > Dashboard >  
Compass.  
To view the Numbers screen from the Home screen, select  
Information > Dashboard > Numbers.  
To customize the Numbers screen:  
1. From the Home screen, select Information > Dashboard >  
Numbers.  
2. Press MENU and select Configure.  
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Viewing Information  
3. Select the number of fields to show (3, 4, 5, or 6).  
4. Select information to show in each field.  
To reset the trip information, maximum speed, odometer, or all  
values, press MENU while viewing the trip information.  
Viewing Fuel Gauges  
To view fuel gauges from the Home screen, select Information >  
Dashboard > Fuel. Fuel level in each tank, total fuel remaining,  
cruising range, fuel flow for each engine, total fuel flow, fuel  
economy for each tank, and total fuel economy are displayed.  
Viewing Trip Information  
From the home screen, select Information > Dashboard > Trip.  
NOTE: To view fuel information, your unit must be connected to an  
external fuel sensor, such as the Garmin GFS10.  
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Viewing Information  
To synchronize your fuel gauges with your fuel:  
From the Home screen, select Information > Dashboard > Fuel  
> MENU.  
Fill Up All Tanks—select when your tank is full. An estimate  
of the total fuel is shown. Adjust if necessary.  
Add Fuel To Boat—select when you have added less than  
a full tank. An estimate of the fuel added is shown. Adjust if  
necessary.  
Set Total Fuel Onboard—select to specify the total fuel in  
your tanks.  
Fuel Economy—select either GPS Speed or Water Speed  
(using data from a speed wheel) for the fuel economy  
calculation.  
Select Change Date > Manual to view tide information for a  
different date.  
Viewing Tide-station Information  
Select Show Report to view the Tide Prediction Report for the  
NOTE: You must use a BlueChart g2 Vision card to view Tide-  
station information.  
selected station.  
1. Select Information > Tides & Currents > Tides.  
Viewing Current Information  
Use the Current Prediction screen to view information for currents.  
2. Select a tide station. Tide-station information is shown.  
NOTE: You must use a BlueChart g2 Vision card to view Current-  
station information.  
1. Select Information > Tides & Currents > Currents.  
2. Select a current station. Current-station information is shown.  
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Viewing Information  
Viewing User Data  
To view user data, from the Home screen, select Information >  
User Data.  
waypoints—view a list of all saved waypoints (page 15).  
Routes—view a list of saved routes (page 25).  
Tracks—view a list of saved tracks (page 26).  
data Transfer—transfer waypoints, routes, and tracks to and from  
an SD card or network.  
Clear User data—erase all user waypoints, routes, and tracks.  
To copy or merge MapSource data to your chartplotter:  
1. Insert an SD card into your chartplotter to allow it to place a file  
on the SD card. This file provides information to MapSource  
to format the data. This only needs to be done the first time  
you copy or merge MapSource data to your chartplotter from a  
specific SD card.  
Select Change Date > Manual to view current-station  
information for a different date.  
Select Show Report to view the Current Prediction Report for  
the selected station.  
2. Check your MapSource version on the computer by clicking  
Help > About MapSource. If the version is older than 6.12.2,  
update to the most-current version by clicking Help > Check for  
Software Updates, or check the Garmin Web site at www  
NOTE: You can select both tide-station and current-station  
information directly from the Navigation chart.  
3. Insert the SD card into an SD card reader that is attached to the  
computer.  
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Viewing Information  
4. From within MapSource, click Transfer > Send to Device.  
4. Select Yes to save waypoints, routes, and tracks to the SD card.  
The file name is saved with an .ADM extension.  
5. From the Send to Device window, select the drive for the SD  
card reader and the types of data you want to copy to your  
chartplotter.  
To transfer data (waypoints, routes, tracks) from an SD  
card:  
6. Click Send.  
1. Insert an SD card into the SD card slot on the front of the unit.  
7. Insert the SD card into your chartplotter.  
2. From the Home screen, select Information > User Data > Data  
Transfer.  
8. From the Home screen on your chartplotter, select Information >  
User Data > Data Transfer.  
3. Complete one of the following:  
9. Complete one of the following:  
Select Merge From Card to transfer data from the SD card to  
the chartplotter and combine it with existing user data.  
Select Merge From Card to transfer data from the SD card to  
the chartplotter and combine it with existing user data.  
Select Replace From Card to overwrite items on your  
chartplotter.  
Select Replace From Card to overwrite the data on your  
chartplotter.  
4. Select the file name from the list. The data is transferred from the  
SD card to the chartplotter.  
10.Select the file name from the list. The data is transferred from the  
SD card to the chartplotter.  
To copy the built-in maps to an SD card:  
1. Insert an SD card (at least 4 GB) into the SD card slot on the  
front of the unit.  
To transfer data (waypoints, routes, tracks) to an SD card:  
1. Insert an SD card into the SD card slot on the front of the unit.  
2. From the Home screen, select Information > User Data > Data  
Transfer > Copy Built-In Map to copy the maps loaded onto  
your chartplotter to the SD card.  
2. From the Home screen, select Information > User Data > Data  
Transfer > Save To Card.  
3. Complete one of the following:  
To transfer data to or from a NMEA 2000 network:  
1. Connect the unit to a NMEA 2000 network. (Refer to the  
GPSMAP 4000/5000 Installation Instructions.)  
Select the file name from the list.  
Select Add New File to create a new file. Enter the file name  
using the Rocker and select Done.  
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Viewing Information  
6. From Windows® Explorer, open the Garmin\UserData folder on  
the SD card.  
NOTE: Only the following units are NMEA 2000 compatible:  
GPSMAP 451/451s  
GPSMAP 551/551s  
GPSMAP 526/526s  
GPSMAP 556/556s  
7. Copy the appropriate .ADM file on the card, and paste it to any  
location on the computer.  
2. From the Home screen, select Information > User Data > Data  
Transfer > Network.  
To restore backup data to your chartplotter:  
1. Copy the appropriate .ADM file from the computer to an SD card  
in the Garmin\UserData folder.  
3. Complete one of the following:  
2. Insert the SD card into your chartplotter.  
Select Clone User Data to transfer waypoints, routes,  
and tracks to other chartplotters connected to the network.  
Existing data is overwritten on those chartplotters.  
3. From the Home screen on your chartplotter, select Information >  
User Data > Data Transfer > Replace From Card.  
Select Merge User Data to transfer data between all the  
chartplotters connected to the network. Unique data is  
combined with existing data on every chartplotter.  
To delete all waypoints, routes, and tracks:  
1. From the Home screen on your chartplotter, select Information >  
User Data > Clear User Data.  
To back up data to a computer:  
1. Insert an SD card into the SD card slot on the front of the unit.  
2. Select Waypoints, Routes, Saved Tracks, or All.  
3. Select OK to delete the data.  
2. From the Home screen, select Information > User Data > Data  
Transfer > Save To Card.  
Viewing Other Vessels  
3. Complete one of the following:  
To view information about other boats from the Home screen,  
select Information > Other Vessels.  
Select the file name from the list.  
Select Add New File to create a new file. Enter the file name  
using the Rocker, and press Select.  
NOTE: To view information about other boats, your unit must be  
connected to an external AIS (Automatic Identification System)  
or DSC (Digital Selective Calling) device. See page 49 for more  
information.  
5. Remove the SD card from the unit, and insert it into an SD card  
reader attached to a computer.  
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Viewing Information  
aiS List—view information about all of the boats your unit  
is monitoring. The AIS list shows the MMSIs or (if the boat is  
broadcasting it) names of the AIS boats and is sorted by range. The  
boat nearest to your boat appears at the top of the list.  
dSC List—view the 100 most recent calls. The DSC List shows the  
most recent call from a boat. If a second call is received from the  
same boat, it replaces the first call in the list.  
Select Options to sort calls by name, type, MMSI, distance from  
your boat, or the time the call was received.  
Select Options > Delete All to delete all the calls from the list.  
To add a DSC contact:  
1. Select Add Contact.  
2. Use the Rocker to enter the MMSI number of the vessel.  
3. Use the Rocker to enter the name of the vessel.  
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Configuring the Chartplotter  
GPS position information. However, when using WAAS or  
EGNOS, the device takes longer to acquire satellites.  
Configuring the Chartplotter  
Use the Configure screen to configure unit settings.  
Speed filter—select On, Off, or auto. The speed filter averages  
the speed of your boat over a short period of time for smoother  
speed values.  
Configuring System Settings  
To change general system settings from the Home screen, select  
Configure > System.  
System information—view system information and reset factory  
settings. The Save to Card button is provided as a troubleshooting  
tool; a Garmin Product Support representative may ask you to use  
this feature to retrieve data about your chartplotter.  
Simulator—turn Simulator mode on or off. Select Setup to set  
simulator options, such as simulated position, speed, and direction.  
beeper/display—select beeper to set when the unit makes audible  
sounds. Select display > backlight to brighten or darken the  
backlight. Select display > Color Mode to switch between Day  
mode and Night mode (page 4).  
Event Log—displays a list of system events. Select the event to  
view additional information.  
Configuring Units of Measure  
To change units of measure from the Home screen, select  
Configure > Preferences > Units.  
auto Power (GPSMAP 421/451/521/551/526/556, including “s”  
models)—turn Auto Power On or Off. When On is selected, the  
chartplotter will automatically turn on whenever power is applied,  
unless the chartplotter is turned off with the Power Key before  
power is lost.  
System Units—global setting that defines individual units of  
measure at the same time: Statute (mh, ft, ºf), Metric (kh, m, ºC),  
Nautical (kt, ft, ºf), or Custom. Select Custom to individually  
define units of measure for depth, temperature, distance, speed,  
elevation, volume, and pressure.  
gPS—view GPS satellites.  
Skyview—view the GPS satellite constellation.  
NOTE: You must be receiving NMEA sonar depth data or using  
a Garmin sounder module to view depth and water temperature  
information.  
waaS/EgNOS—toggle WAAS (in North America) or EGNOS  
(in Europe) on or off. WAAS/EGNOS can provide more-accurate  
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Configuring the Chartplotter  
Heading—sets the reference used in calculating heading  
information.  
Changing the System Language  
To change the system language, from the Home screen, select  
Configure > Preferences > Language and then select the  
language.  
auto Magnetic—automatically sets the magnetic declination for  
your location.  
True—sets true north as the heading reference.  
Configuring Navigation Preferences  
To change navigation preferences, from the Home screen, select  
Configure > Preferences > Navigation.  
grid—sets grid north as the heading reference (000º).  
User Magnetic—allows you to set the magnetic variation value.  
Route Labels—for saved routes, this determines whether route  
turns are indicated by number (Turn 1, Turn 2, and so on) or by  
waypoint name, or whether the description of turns is hidden.  
Position format—change the coordinate style in which a given  
location reading appears. Do not change the position format unless  
you are using a map or chart that specifies a different position  
format.  
Turn Transition—set how much time or how far before a turn in a  
route that you transition to the next leg.  
Map datum—change the coordinate system in which the map is  
structured. Do not change the map datum unless you are using a map  
or chart that specifies a different map datum.  
Speed Sources—specify the sensor used for wind numbers and fuel  
economy. Select wind or fuel Economy to toggle between water  
(from a water-speed sensor) and GPS (from the calculated GPS  
speed).  
Time—set the time options.  
Time format—select 12-hour, 24-hour, or UTC time format.  
auto guidance—set the automatic guidance parameters:  
Time Zone—set the time zone you want displayed for time  
readings.  
Safe depth—set the minimum depth (chart depth datum) to  
allow when calculating an automatic guidance path. A safe depth  
of less than one meter is not allowed when using automatic  
guidance.  
dST (Daylight Saving Time)—select Off, On, or auto. The  
auto setting automatically turns daylight saving time on or off,  
depending on the time of year.  
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Configuring the Chartplotter  
Safe Height—set the minimum height (chart height datum) of a  
bridge that your boat can safely travel under.  
NMEa Standard—supports the input or output of standard  
NMEA 0183 data, DSC, and sonar NMEA input support for the  
DPT, MTW, and VHW sentences.  
Shoreline distance—set the safe distance for your boat from the  
shore: Nearest, Near, Normal, far, or farthest.  
NMEa High Speed—supports the input or output of standard  
0183 data for most AIS receivers.  
Configuring Communications Settings  
To change the communications settings from the Home screen,  
select Configure > Communications.  
NMEa 0183 Setup—enable or disable NMEA 0183 output  
sentences for sounder, route, system, and Garmin NMEA settings.  
To enable or disable NMEA 0183 output sentences:  
1. From the Home screen, select Configure > Communications >  
NMEA 0183 Setup.  
Serial Port 1—configures the input/output format for serial port 1 to  
use when connecting your chartplotter to external NMEA devices, a  
computer, or other Garmin devices.  
2. Select a setting (Sounder, Route, System, or Garmin).  
Serial Port 2 (if supported)—configures the input/output format for  
serial port 2 to use when connecting your chartplotter to external  
NMEA devices, a computer, or other Garmin devices.  
3. Select the NMEA 0183 output sentence to toggle the output on or  
off.  
Posn. Precision—adjust the number of digits (Two digits,  
Three digits, or four digits) to the right of the decimal point  
for transmission of NMEA output.  
garmin data Transfer—supports the input or output of  
Garmin-proprietary data for communicating with Garmin  
software.  
waypoint ids—determine how the unit identifies waypoint  
identifiers (Names or Numbers).  
garmin Remote Sonar Transfer (GPSMAP  
420/450/520/550/525/555)—supports the input or output of  
Garmin-proprietary sonar data for communicating with Garmin  
software.  
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Configuring the Chartplotter  
NMEa 2000 devices—lists the NMEA 2000 devices on your  
network. If a NMEA 2000 device has configuration options or  
settings, select the device for a list of options.  
Setting Navigation Alarms  
To set a navigation alarm from the Home screen, select  
Configure > Alarms > Navigation.  
arrival—set an alarm to sound when you are within a specified  
distance or time from a turn or destination waypoint.  
NOTE: Only the following units are NMEA 2000 compatible:  
GPSMAP 451/451s  
GPSMAP 551/551s  
GPSMAP 526/526s  
GPSMAP 556/556s  
Type—select whether you want arrival alarms to sound only  
when nearing destinations or when nearing either turns or  
destinations. Select Off to disable arrival alarms.  
CaNet devices—lists the CANet devices on your network. If a  
CANet device has configuration options or settings, select the device  
for a list of options.  
activation—select whether the arrival alarm triggers on time to  
arrival or distance to arrival.  
Change Time/Change distance—if you have Activation set to  
Time, select Change Time to set the number of minutes before  
arrival that the alarm should sound. If you have Activation set  
to Distance, select Change distance to set the distance before  
arrival that the alarm should sound. Use the Rocker to change  
the time or distance.  
NOTE: Only the GPSMAP 420/450/520/550/525/555 (including “s”  
models) are CANet compatible:  
Setting Alarms  
You can set the unit to sound an audible alarm when certain  
conditions are met. By default, all alarms are turned off.  
anchor drag—set an alarm to sound when you exceed a specified  
drift distance.  
To set an alarm:  
1. From the Home screen, select Configure > Alarms.  
Off Course—set an alarm to sound when you are off course by a  
specified distance.  
2. Select an alarm category.  
3. Select an alarm.  
4. Select On to turn on the alarm.  
5. Specify alarm information.  
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Configuring the Chartplotter  
water Temp—set an alarm to sound when the transducer reports  
a temperature that is 2°F (1.1°C) above or below the specified  
temperature.  
Setting System Alarms  
To set a system alarm from the Home screen, select Configure >  
Alarms > System.  
Clock—set an alarm using the system (GPS) clock. The unit must  
be on for the clock alarm to work.  
fish—set an alarm to sound when the unit detects a suspended  
target of the specified symbols.  
battery—set an alarm to sound when the battery reaches a specified  
low voltage.  
—sounds an alarm for all fish sizes.  
—sounds an alarm for medium and large fish only.  
—sounds an alarm for large fish only.  
gPS accuracy—set an alarm to sound when the GPS location  
accuracy falls outside the specified value.  
Setting Sonar Alarms  
Setting the Total Fuel Onboard Alarm  
You can configure your chartplotter to sound an alarm when the total  
amount of remaining onboard fuel reaches the specified level.  
To set a sonar alarm from the Home screen, select Configure >  
Alarms > Sonar.  
NOTE: You must be receiving NMEA sonar depth data or using a  
Garmin sounder module to configure sonar alarms.  
NOTE: To receive fuel-level information, your unit must be  
connected to an external fuel sensor, such as the Garmin GFS 10.  
Shallow water—set an alarm to sound when the depth is less than  
the specified value.  
To enable the Total Fuel Onboard alarm and set the fuel  
alarm level:  
1. From the Home screen, select Configure > Alarms > Fuel >  
Total Onboard > On (or Off).  
deep water—set an alarm to sound when the depth is greater than  
the specified value.  
2. If you select On, use the Rocker to indicate the fuel level at  
which the alarm should sound.  
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Configuring the Chartplotter  
Transducer at Surface  
A (+) positive number  
shows depth at the bottom  
of the keel.  
Configuring My Boat  
To configure settings for your boat, from the Home screen, select  
Configure > My Boat.  
Keel Offset—offset the surface reading for the depth of a keel,  
making it possible to measure depth from the bottom of the keel  
instead of from the transducer location. Enter a positive number to  
offset for a keel. Enter a negative number to compensate for a large  
vessel that may draw several feet of water.  
Transducer at the  
Bottom of the Keel  
A (-) negative number  
shows depth at the  
surface.  
To adjust the Keel Offset:  
1. From the Home screen, select Configure > My Boat > Keel  
Offset.  
Temp Offset—set the temperature offset for the temperature sensor  
of your transducer.  
2. Use the Rocker to enter the measured distance from the  
transducer location to the water line or to the keel of the boat.  
Calibrate water Speed—use this menu to calibrate a speed-sensing  
device. Follow the on-screen directions for calibration. If you do not  
have a speed-sensing device, this menu does not appear.  
If you are measuring down to the keel (transducer installed at  
the water line), enter a (+) positive number. This shows the  
depth at the bottom of the keel.  
If you are measuring up to the water line (transducer installed  
on the bottom of the keel), enter a (-) negative number. This  
shows the depth at the surface.  
NOTE: If the boat is not moving fast enough or the speed sensor is  
not registering a speed, a “Speed Too Low” message appears. Select  
OK, and safely increase the speed of the boat. If you get the message  
again, stop the boat and make sure the speed-sensor wheel is not  
stuck. If the wheel turns freely, check the cable connections. If you  
continue to get the message, contact Garmin Product Support.  
3. Select Done to accept the number.  
fuel Capacity—enter the total fuel capacity of your boat.  
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Configuring the Chartplotter  
Configuring Other Vessels  
To configure settings for boats other than your own, from the  
Home screen, select Configure > Other Vessels.  
NOTE: To configure AIS or DSC information for other boats, your  
unit must be connected to an external AIS or DSC device.  
aiS—turn AIS (Automatic Identification System) on or off. AIS  
alerts you to area traffic by providing boat IDs, position, course,  
and speed for boats that are within range and equipped with a  
transponder.  
dSC—turn DSC (Digital Selective Calling) on or off.  
aiS alarm—turn a safe zone around your boat on or off. This is  
used for collision avoidance, and the zone can be customized.  
To customize safe-zone settings:  
From the Home screen, select Configure > Other Vessels > AIS  
Alarm.  
Range—change the measured radius of the safe-zone ring to  
a specified distance from 500 ft. to 2.0 nm (or from 150 m to  
3.0 km, or from 500 ft. to 2.0 mi).  
Time to (Safe Zone)—sounds an alarm if AIS or MARPA  
determines that a target will intersect the safe zone within the  
defined time interval (from 1 to 24 minutes).  
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Using Sonar  
Depth  
Using Sonar  
When connected to a transducer, the following chartplotters can be  
Temperature  
Speed  
used as fishfinders:  
GPSMAP 420s  
GPSMAP 421s  
GPSMAP 520s  
GPSMAP 521s  
GPSMAP 550s  
GPSMAP 551s  
GPSMAP 450s  
GPSMAP 451s  
GPSMAP 525s  
GPSMAP 526s  
GPSMAP 555s  
GPSMAP 556s  
Suspended  
targets  
Range  
Transducer  
frequency or  
beam width  
Understanding the Full Screen  
Select the Full Screen option to view a full-screen graph of the  
transducer’s sonar readings.  
Full Screen  
From the Home screen, select Sonar > Full Screen.  
Understanding the Split Frequency Screen  
Use the Split Frequency screen (dual-frequency transducer only) to  
view both the 50 kHz and 200 kHz frequencies on the same screen.  
A 50 kHz frequency graph appears on the left; a 200 kHz frequency  
graph appears on the right.  
From the Home screen, select Sonar > Split Frequency.  
44  
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Using Sonar  
Depth, temperature, and speed  
Depth, temperature,  
and speed  
Zoom  
window  
Zoomed  
depth scale  
Range  
Range  
Zoom level  
Transducer frequency  
or beam width  
Frequencies  
Split Frequency  
Split Zoom  
Understanding The Split Zoom Screen  
Use the Split Zoom screen to view the full sonar data from the graph  
and a zoomed in portion on the same screen.  
Understanding the Temp Log Screen  
If you are using a temperature-capable transducer, the Temp Log  
screen keeps a graphic log of temperature readings over time. The  
current temperature and the depth are shown in the top-left corner.  
From the Home screen, select Sonar > Split Zoom.  
From the Home screen, select Sonar > Temp Log.  
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Using Sonar  
Press MENU to set the duration and the scale for the log.  
fish Symbols—set how the sonar interprets suspended targets.  
The unit does not interpret the sonar return data (default).  
Temp  
and  
depth  
Suspended targets appear as symbols. Background sonar  
information appears, making the distinction between fish  
and structure easier.  
Suspended targets appear as symbols with background  
information shown. The target depth of each symbol is also  
displayed.  
Temperature  
range  
Time  
elapsed  
Suspended targets appear as symbols. No background  
information appears.  
Suspended targets appear as symbols with no background  
information shown. The target depth of each symbol is  
displayed.  
Temp Log  
The temperature appears along the right side, and the time  
elapsed appears along the bottom. The graph scrolls to the left as  
information is received.  
Scroll Speed—adjust the rate at which the sonar scrolls from  
right to left (Ultrascroll, fast, Medium, or Slow). If using a  
speed-capable transducer, select auto to have the scroll speed  
automatically adjust to the water speed of your boat.  
Setting Up Sonar  
Use the Sonar Setup screen to define and adjust settings universal to  
all sonar screens.  
From the Home screen, select Sonar > Sonar Setup.  
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Using Sonar  
whiteline—highlights the strongest signal from the bottom to help  
identify its hardness or softness.  
Advanced Sonar Settings  
To adjust advanced sonar settings, press MENU while viewing a  
sonar screen.  
Off (default)—turns off whiteline.  
Pause Sonar—Stops the scrolling of the sonar screen.  
High—the most sensitive setting. Almost all strong returns are  
highlighted in white.  
To mark a waypoint at a selected depth:  
1. While viewing a sonar screen, press MENU > Pause Sonar.  
Medium—many strong returns are highlighted in white.  
Low—the least sensitive setting. Only the strongest returns are  
2. Use the Rocker to position the pointer over the fish or structure  
highlighted in white.  
you want to mark.  
3. Press SELECT.  
Color Scheme—select white or blue. This affects the background  
on all sonar screens, but does not change the Temp Log screen.  
From the paused screen, press MENU > Resume to continue  
scrolling.  
Surface Noise—show or hide the sonar returns near the surface of  
Range—adjust the range of the depth scale on the right side of the  
screen (auto, or to adjust manually, Right or Left).  
the water. Hide surface noise to help reduce clutter.  
data bars—show or hide battery voltage, water temperature, water  
gain—controls the sensitivity of the sonar receiver (auto, or to  
adjust manually, Right or Left). To see more detail, increase the  
gain. If the screen is cluttered, decrease the gain.  
speed (if your transducer is capable), cruising, and navigation.  
NOTE: To display water temperature or water speed, the connected  
transducer must be capable of measuring water temperature, water  
speed, or both. Select auto to display the values.  
frequency—when using a dual frequency transducer, select how  
the frequencies appear on-screen (200kHz, 50kHz, dual, or auto).  
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Using Sonar  
Zoom—zoom in to a section of the full screen. The zoom is off, or  
set to No Zoom by default. Four options are available:  
No Zoom—turns zooming off.  
2x Zoom—twice the magnification.  
4x Zoom—four times the magnification.  
bottom Lock—locks the zoom window to the bottom.  
Split Zoom—displays the Split Zoom screen (page 45).  
depth Line—quickly reference a specific depth (Show or Hide). To  
set the depth of the reference line, select Show, and then press up or  
down on the Rocker.  
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Digital Selective Calling  
Digital Selective Calling (DSC)  
Using the Chartplotter with a VHF Radio  
The following table indicates the features that are available when you connect your chartplotter to a VHF radio over a NMEA 0183 network  
or a NMEA 2000 network.  
Feature  
NMEA 0183 NMEA 2000 Garmin NMEA  
Garmin NMEA  
VHF Radio  
VHF Radio 0183 VHF Radio 2000 VHF Radio  
The chartplotter can transfer your GPS position to  
your radio. If your radio is capable, GPS position  
information is transmitted with DSC calls.  
X
X
X
X
The chartplotter can receive DSC distress and  
position information from the radio.  
X
X
X
X
X
X
X
X
X
The chartplotter can track the positions  
of vessels sending position reports.  
Quickly set up and send individual routine call  
details to your Garmin VHF radio.  
When you initiate a man-overboard distress call  
from your radio, the chartplotter displays the man-  
overboard screen and prompts you to navigate to  
the man-overboard point.  
X
X
When you initiate a man-overboard distress call  
from your chartplotter, the radio displays the  
Distress Call page to initiate a man-overboard  
distress call.  
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Digital Selective Calling  
To turn DSC on or off:  
1. Select Configure > Other Vessels.  
Receiving Distress Calls  
If your Garmin chartplotter and VHF radio are connected via NMEA  
0183 or NMEA 2000, your chartplotter alerts you when your VHF  
radio receives a DSC distress call. If position information was sent  
with the distress call, that information is also available and recorded  
with the call.  
2. Select DSC to toggle it on or off.  
Adding a DSC Contact  
You can make calls to a DSC contact from the chartplotter. See  
page 52 for information on making an individual routine call.  
The  
symbol designates a distress call in the DSC List and marks  
1. While viewing a chart, press MENU > Other Vessels > DSC >  
DSC List > Add Contact.  
the position of a vessel on the Navigation chart at the time the DSC  
distress call was sent.  
2. Use the Rocker to enter the Maritime Mobile Service Identity  
(MMSI) number of the vessel, and press SELECT.  
When you receive a DSC distress call:  
1. Select Review to view details about the call.  
3. Use the on-screen keyboard to enter the name of the vessel, and  
2. Complete one of the following:  
select Done.  
Select Call with Radio to set up an individual routine call with  
the radio to call the vessel in distress (page 52). This option  
is only available if you are using a Garmin NMEA 2000-  
compatible VHF radio.  
Viewing the DSC List  
The DSC list is a log of the most-recent DSC calls and other DSC  
contacts you have entered. The DSC list can contain up to 100  
entries. The DSC list shows the most-recent call from a boat. If a  
second call is received from the same boat, it replaces the first call in  
the call list.  
Select Edit to edit the vessel name and add a comment. If  
your radio is tracking the position of the vessel, select Trail to  
show or hide the trail line for the vessel, and select Trail Line  
to change the line color. Select Clear Report to delete the  
call report. Select Create Waypoint to set a waypoint at the  
position sent with the distress call.  
From a chart screen, press MENU > Other Vessels > dSC > dSC  
List.  
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Digital Selective Calling  
Man-Overboard Distress Calls Initiated  
from a VHF Radio  
Position Tracking  
When you connect your Garmin chartplotter to a VHF radio using  
NMEA 0183, you can track vessels that send position reports. This  
feature is also available with NMEA 2000, provided that the vessel  
sends the correct PGN data (PGN 129808; DSC Call Information).  
When your Garmin chartplotter is connected to a Garmin NMEA  
2000-compatible radio and you initiate a man-overboard DSC  
distress call from your radio, your Garmin chartplotter displays the  
man-overboard screen and prompts you to navigate to the man-  
overboard point. If you have a Garmin autopilot system connected  
to the network, your chartplotter prompts you to start a Williamson  
turn to the man-overboard point.  
Every position report call received is logged in the DSC list  
(page 36).  
To view a list of position reports:  
1. From the Home screen, select Information > Other Vessels >  
DSC List.  
If you cancel the man-overboard distress call on the radio, the man  
overboard screen no longer appears.  
2. Select from the following options:  
Select Call with Radio to set up an individual routine call  
with the radio to call the vessel that sent the position report.  
This option is only available if you are using a Garmin NMEA  
2000-compatible VHF radio.  
Man-Overboard Distress Calls Initiated  
from the Chartplotter  
When your Garmin chartplotter is connected to a Garmin NMEA  
2000-compatible radio and you activate navigation to a man-  
overboard location, the radio displays the Distress Call page to  
initiate a man-overboard distress call. On the radio, press and hold  
the DISTRESS key for at least three seconds to send the distress  
call.  
Select Edit to edit the vessel name and the vessel symbol,  
and add a comment. If your radio is tracking the position  
of the vessel, select Trail to show or hide the trail line for  
the vessel, and select Trail Line to change the line color.  
Select Clear Report to delete the call report. Select Create  
Waypoint to set a waypoint at the position sent with the  
distress call.  
For information on placing distress calls from your Garmin radio,  
see your Garmin VHF Radio Owner’s Manual. For information on  
activating navigation to a man-overboard location, see page 24.  
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Digital Selective Calling  
Select Navigate To to Go To or Route To the location sent  
with the position report (page 11).  
3. Select Trail.  
To change the symbol and color of the trail line for a vessel:  
1. From the Home screen, select Information > Other Vessels >  
DSC List.  
Configuring Vessel Trails on the Navigation Chart  
If you have your chartplotter configured to show trails, the  
Navigation chart displays a black dot for each reported position,  
2. Select the vessel from the list > Edit.  
a black line indicating the path of the vessel, and a  
symbol indicating the last reported position.  
Blue Flag  
3. Select an option:  
Select Symbol to edit the symbol.  
Select Trail Line to edit the line color.  
To set the duration of displayed trail points:  
1. From a chart screen, press MENU > Other Vessels > DSC >  
DSC Trails.  
Placing an Individual Routine Call  
When you connect your Garmin chartplotter to a Garmin VHF  
NMEA 2000-compatible radio, you can use the chartplotter interface  
to set up an individual routine call. When setting up an individual  
routine call from your chartplotter, you can select one of the  
following channels on which you want to communicate. The radio  
transmits this request with your call.  
2. Select the number of hours to show tracked vessels on the  
Navigation chart. For example, if you select 4 Hours, all  
trail points (less than four hours old) for tracked vessels are  
displayed.  
To turn trail lines off for tracked vessels:  
1. From a chart screen, press MENU > Other Vessels > DSC >  
DSC Trails.  
The selection of a DSC channel is limited to those channels that are  
available in all frequency bands: 6, 8, 9, 10, 13, 15, 16, 17, 67, 68,  
69, 71, 72, 73, or 77.  
2. Select Off to turn trails off for every vessel.  
To show or hide the trail line for a specific vessel that is  
sending position reports:  
1. From the Home screen, select Information > Other Vessels >  
DSC > DSC List.  
NOTE: The default channel is 72. However, select Channel to select  
a different channel from the list. If you select a different channel, the  
chartplotter uses that channel for subsequent calls until you call using  
a different channel.  
2. Select the vessel from the list > Edit.  
5ꢁ  
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Digital Selective Calling  
To make an individual routine call:  
1. While viewing a chart, press MENU > Other Vessels > DSC >  
DSC List.  
2. Select the station to call from the list.  
3. Select Review > Call with Radio.  
4. Select Send to send the information about the call to the radio.  
5. On your Garmin VHF radio, select Call.  
Calling an AIS Target  
When you connect your Garmin chartplotter to a Garmin VHF  
NMEA 2000-compatible radio, you can use the chartplotter interface  
to set up an individual routine call to an AIS target. For more  
information on selecting a channel other than the default channel  
(Channel 72), see (page 52).  
To make an individual routine call to an AIS target:  
1. While viewing a chart, use the Rocker to select an AIS  
target  
.
2. Select AIS Vessel > Call with Radio.  
3. Select Send to send the information about the call to the radio.  
4. On your Garmin VHF radio, select Call.  
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Appendix  
Performance  
Receiver: Differential-ready 12 parallel channel WAAS-capable  
Appendix  
receiver  
Specifications  
Physical Specifications  
acquisition Times:*  
GPSMAP 420/420s  
GPSMAP 520/520s  
GPSMAP 526/526s  
GPSMAP 550/550s  
GPSMAP 450/450s  
GPSMAP 525/525s  
GPSMAP 556/556s  
GPSMAP 555/555s  
Size :  
400 Series: W × H × D: 5.7 in. × 5.0 in. × 3.0 in.  
(14.5 cm × 12.7 cm × 7.6 cm)  
500 Series: W × H × D: 5.9 in. × 6.4 in. × 2.9 in.  
(15.0 cm × 16.3 cm × 7.4 cm)  
Warm: Approximately 15 seconds  
weight: 400 Series: 1.30 lb. (560 g)  
500 Series: 1.75 lb. (800 g)  
Cold: Approximately 45 seconds  
AutoLocate® (factory reset): Approximately 2 minutes  
display: gPSMaP 420/421/450/451: 4.0 in. diagonal (10.6 cm),  
GPSMAP 421/421s  
GPSMAP 521/521s  
GPSMAP 451/451s  
GPSMAP 551/551s  
QVGA display with adjustable brightness, 320 × 234 pixels.  
gPSMaP 520/521/550/551: 5.0 in. diagonal (12.7 cm), QVGA  
display with adjustable brightness, 320 × 240 pixels.  
Warm: Approximately 1 second  
Cold: Approximately 38 seconds  
AutoLocate (factory reset): Approximately 45 seconds  
gPSMaP 525/526/555/556: 5.0 in. diagonal (12.7 cm), Full  
VGA display with adjustable brightness, 640 × 480 pixels,  
capable of 4,096 colors.  
*Average acquisition times for a stationary receiver with a clear  
view of the sky.  
Case: Fully gasketed, high-impact plastic alloy, waterproof to  
Update Rate: 1/second, continuous  
IEC 529 IPX7 standards.  
gPS accuracy:  
Temp. Range: From 5ºF to 131ºF (from -15ºC to 55ºC)  
Compass-Safe distance: 38 in. (95 cm)  
Position: <49 ft. (15 m), 95% typical  
Velocity: 0.164 ft./sec 0.05 m/sec steady state  
54  
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Appendix  
waaS accuracy:  
Position: <10 ft. (3 m), 95% typical*  
depth: 2,500 ft. (762 m) (1 kW), 1,500 ft. (457 m) (dual frequency),  
900 ft (274 m) (dual beam)**  
Velocity: 0.05 m/sec steady state  
dynamics: 6 g  
*1 kW transducers are supported by the GPSMAP 525s/526s/  
555s/556s units only.  
**Depth capacity is dependent on water salinity, bottom type,  
and other water conditions.  
Power  
Power Source: 10–32 Vdc  
GPSMAP 421/421s  
GPSMAP 521/521s  
GPSMAP 551/551s  
GPSMAP 451/451s  
GPSMAP 526/526s  
GPSMAP 556/556s  
Alarms and Messages  
The unit uses an on-screen message system to alert you to unit  
operating characteristics. When a message appears, press MENU to  
acknowledge the message.  
Power Source: 10–35 Vdc  
GPSMAP 420/420s  
GPSMAP 520/520s  
GPSMAP 550/550s  
GPSMAP 450/450s  
GPSMAP 525/525s  
GPSMAP 555/555s  
accuracy alarm—the GPS accuracy has fallen outside of the user-  
set value.  
Usage: 15 W max at 13.8 Vdc  
fuse: AGC/3AG - 3.0 A  
aiS: dangerous Target—shows the MMSI (Maritime Mobile  
Service Identity) of the dangerous target.  
Sonar  
alarm Clock—the alarm clock has sounded.  
Power: 1 kW Transducer, 1,000 W (RMS),  
anchor drag alarm—you have drifted out of the specified distance  
range.  
8,000 W (peak to peak)*;  
Dual Frequency, 500 W (RMS), 4,000 W (peak to peak);  
Dual Beam, 400 W (RMS), 3,200 W (peak to peak)  
antenna input is Shorted—a part of the antenna wiring is  
contacting the chassis.  
frequency: 50/200 kHz (dual frequency and 1 kW), 80/200 kHz  
(dual beam)  
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Appendix  
arriving at [waypoint Name]—you arrived at the destination  
waypoint. You can Stop Navigation when this message appears.  
Can’t write User Card, Card May be full—error reading card;  
remove and reinsert. Contact your dealer or Garmin Product Support  
if the problem persists.  
battery alarm—battery voltage has fallen below the value entered  
in the Battery Alarm setup.  
Can’t write User Card, Card is Read-Only—the SD card in your  
unit contains data copy protection.  
battery Voltage is Too High—too much input voltage—the unit  
shuts off in 10 seconds. Decrease the input voltage to 35 Vdc or less.  
Card NeededYour unit needs to have an SD card inserted into the  
SD card slot in order to perform the function you requested.  
boat is Not Moving fast Enough to Calibrate—the boat is not  
moving fast enough for the speed wheel to provide a valid speed.  
dSC Position Report Received from—shows the MMSI or name  
associated with an MMSI.  
Can’t Read User Card—error reading card; remove and reinsert.  
Contact your dealer or Garmin Product Support if the problem  
persists.  
database Error—internal problem with the unit. Contact your  
dealer or Garmin Product Support to have the unit serviced.  
Can’t Read Voltages That High, Limited To Top Of Range—the  
voltage value in the Battery Alarm setup is higher than the unit can  
read.  
deep water alarm—the Deep Water Alarm depth has been  
reached.  
directory item with This MMSi already Exists—the MMSI  
Can’t Read Voltages That Low, Limited To bottom Of  
Range—voltage value in the Battery Alarm setup is lower than the  
voltage where the unit automatically turns off.  
number is already in the DSC directory. Use a different number.  
directory Memory is full, Can’t Create Entry—the DSC  
directory has reached the maximum of 100 contacts. Delete  
unneeded contacts to add new ones.  
Can’t Unlock Maps—data on the data card is not unlocked for the  
unit. Contact your dealer or Garmin Product Support.  
distress Call—a DSC distress call has been received. Take  
appropriate action.  
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Appendix  
Entering (Leaving) target water temperature—the target water  
temperature is 2°F (1.1°C) above or below the temperature specified  
by the Water Temperature Alarm. These messages appear when you  
enter or leave that zone.  
Off Course alarm—you are off course the distance set in the “Off  
Course” alarm.  
Route already Exists—you entered a route name that already exists  
in memory. Modify the route name or delete the previous route  
name.  
Entering Safe Region—the boat is approaching a safe region as  
defined by your configuration settings.  
Route full—you attempted to add more than 250 points to a route.  
Entering Unsafe Region—the boat is approaching an unsafe region  
Reduce the number of points or create a second route.  
as defined by your configuration settings.  
Route Truncated—an uploaded route from another device has more  
fish alarm—a beep sounds (if enabled) when a fish is detected.  
than 250 waypoints and was truncated to fit.  
This alarm does not show a message banner.  
Route waypoint Memory full—no additional route waypoints can  
invalid MMSi—enter a valid MMSI.  
be saved.  
Lost Satellite Reception—the unit has lost satellite signals. Check  
antenna connections or try moving to a location with a clear view of  
the sky.  
Shallow water alarm—the Shallow Water Alarm depth has been  
reached.  
Sonar Service incompatible—the external sonar device you are  
NMEa depth is below Transducer—you must enter an  
connected to needs a software update.  
appropriate Keel Offset for the transducer (page 42).  
Sonar Timeout—there is an internal problem with the unit. Contact  
No waypoints/Routes/Tracks/User waypoints foundattempted  
to transfer user data from an SD card that does not contain the  
specified type of data. Make sure there is data to transfer on the SD  
card.  
your dealer or Garmin Product Support to have the unit serviced.  
Sonar Service Lost—the external sonar device you were connected  
to has either been disconnected or the unit has lost communication  
with the sonar device for some other reason.  
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Appendix  
warning: auto-guidance route starting and ending position  
moved due to safe depth settings—the auto-guidance route was  
calculated but the starting and ending positions were moved because  
of safe depth settings.  
Track already Exists [Track Name]—you entered a saved track  
name that already exists in memory. Modify the track name or delete  
the existing track.  
Track Log full—the track log is full and track recording has been  
turned off. To record more track points, you need to clear the track  
log and turn track recording on. This only appears when the track  
recording setting is set to “Stop When Full.”  
water Speed Sensor is Not working—the speed sensor is not  
detected. Check the connections.  
water Temperature alarm—sonar has reported a temperature  
above, below, inside, or outside the specified values.  
Track Memory is full, Can’t Create Track—the track log  
memory is full. No additional track log data can be stored without  
deleting old data to create memory space.  
waypoint already Exists—you entered a waypoint name that  
already exists in memory. Modify the waypoint name or delete the  
existing waypoint.  
Track Truncated—a complete uploaded track does not fit into  
memory. The oldest track log points were deleted to make space for  
the most recent data.  
waypoint Memory full—you have used all 1,500 waypoints  
available. Delete unwanted waypoints to make space for new entries  
Transducer disconnected, Sonar Turned Off—there is not  
a transducer attached, there is a bad cable or transducer, or the  
transducer cable was disconnected. If the transducer cable is  
removed while the unit is on, reconnect and cycle power.  
Capturing Screenshots  
You can capture a screenshot of any screen displayed on your unit as  
a bitmap (.BMP) file and then transfer it to your computer.  
Transfer Complete—the unit has finished uploading or  
downloading information to the connected device.  
To capture screenshots:  
1. Insert an SD card into the SD card slot on the front of the unit.  
2. Select Configure > System > Beeper/Display.  
User Card Not found, Please insert Card—attempted to transfer  
user data without an SD card containing user data being present in  
the SD card slot.  
3. Select Screenshot Capture to turn screenshot captures On.  
5ꢅ  
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Appendix  
4. When you are on a screen you want to capture, press and hold  
using an eyeglass lens cleaner (that is specified as safe for anti-  
the HOME button for at least six seconds.  
reflective coatings) and a clean, lint-free cloth.  
5. Select OK when the Screenshot Taken window is displayed.  
NMEA 2000  
To copy the screenshots to your computer:  
1. Remove the SD card from the chartplotter and insert it into an SD  
card reader that is attached to a computer.  
The following GPSMAP 400 and GPSMAP 500 series chartplotters  
are NMEA 2000 certified and can receive data from a NMEA 2000  
network installed on the boat.  
2. From Windows Explorer, open the Garmin\scrn folder on the SD  
card.  
GPSMAP 451/451s  
GPSMAP 551/551s  
GPSMAP 526/526s  
GPSMAP 556/556s  
3. Copy the appropriate .BMP file on the card and paste it to any  
location on the computer.  
To connect one of these chartplotter to an existing NMEA 2000  
network and to see a list of supported NMEA 2000 PGN numbers,  
see the GPSMAP 400/500 Series Installation Instructions.  
Caring for the Unit  
The case is constructed of high-quality materials and does not  
require user maintenance, except cleaning.  
Cleaning the Case  
Clean the unit’s outer casing (except for the screen) using a cloth  
dampened with a mild detergent solution and then wipe dry. Avoid  
chemical cleaners and solvents that may damage plastic components.  
Cleaning the Screen  
The lens on the screen is coated with a special anti-reflective coating  
that is sensitive to skin oils, waxes, and abrasive cleaners. Cleaners  
containing ammonia, alcohol, abrasives, or anti-grease detergents  
will harm the anti-reflective coating. It is important to clean the lens  
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Appendix  
Software License Agreement  
BY USING THE UNIT, YOU AGREE TO BE BOUND BY THE TERMS AND  
CONDITIONS OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT.  
PLEASE READ THIS AGREEMENT CAREFULLY.  
Garmin grants you a limited license to use the software embedded in this device  
(the “Software”) in binary executable form in the normal operation of the product.  
Title, ownership rights, and intellectual property rights in and to the Software  
remain in Garmin.  
You acknowledge that the Software is the property of Garmin and is protected  
under the United States of America copyright laws and international copyright  
treaties. You further acknowledge that the structure, organization, and code of  
the Software are valuable trade secrets of Garmin and that the Software in source  
code form remains a valuable trade secret of Garmin. You agree not to decompile,  
disassemble, modify, reverse assemble, reverse engineer, or reduce to human  
readable form the Software or any part thereof or create any derivative works based  
on the Software. You agree not to export or re-export the Software to any country in  
violation of the export control laws of the United States of America.  
ꢃ0  
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Index  
Beeper/Display 37  
BlueChart g2 Vision  
using 2832  
bottom lock 48  
buttons 5  
current stations 32  
customizing  
F
Index  
factory settings  
restoring 6  
chart settings 12  
A
fish eye 3D 17  
settings 17  
D
aerial photos 20  
AIS 36, 43, 53  
AIS Alarm 43  
alarms 40, 5558  
AIS 43  
Dashboard 30  
data  
fishing chart 18  
Fish Symbols 17, 46  
frequency 47  
Fuel Capacity 42  
fuel gauges 31  
full screen, sonar 44  
fuse 55  
C
Calibrate Water Speed 42  
Chart/Sonar screen  
using 21  
transfer 34  
Data Bars  
fish eye 3D chart 18  
Navigation chart 9  
perspective 3D chart 15  
sonar 47  
battery 41  
chart data 10  
charts  
clock 41  
collision 43  
deep water 41  
fish 41  
detail 13  
fish eye 3D 17  
fishing 18  
mariner’s eye 3D 16  
navigation 8  
settings 12  
Data Transfer 33  
Declaration of Conformity iv  
delete a waypoint 25  
depth line 48  
depth waypoint 47  
detail 13  
Display 37  
Distress Calls 50  
DSC 43, 49  
G
gain 47  
Garmin Data Transfer 39  
gauges  
fuel 41  
GPS accuracy 41  
navigation 40  
safe-zone 43  
shallow water 41  
sonar 41  
fuel 31  
Clear User Data 33  
collision alarm 43  
colors, hazard 17  
Color Scheme 47  
Communications 39  
Compass 30  
compass rose 12  
compass tape 15  
contact information, Garmin iv  
course up 13  
go to 22  
GPS 5, 37, 54  
Grid (North) 38  
guide to 22  
water temp 41  
arrival alarms 40  
Auto Magnetic 38  
automatic guidance 21, 38  
autopilot 29  
contact 50  
list 50  
H
Hazard Colors 17  
heading 38  
Heading Line 13  
Head Up 13  
HOME key 5  
E
edit a route 26  
edit existing waypoint 24  
EGNOS 37  
B
backing up data 35  
backlight  
adjusting 4  
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Index  
NMEA 2000 Setup 40  
NMEA High Speed 39  
NMEA Standard 39  
north  
power source 55  
product registration iv  
screenshots 58  
scroll speed 46  
SD cards  
inserting 6  
removing 6  
SELECT key 5  
Serial Port setup 39  
Service Points 12  
settings  
I
ID number 6  
Q
K
quick links i  
keel offset 42  
keypad 5  
grid 38  
magnetic 38  
true 38  
R
radio 49  
L
north up 13  
No Zoom 48  
numbers  
Range (sonar) 47  
Range keys 5  
Range Rings 15, 17  
registering your product iv  
restoring factory settings 6  
Rocker key 5  
Roses 12  
Lane Width 15, 17  
Language 38  
alarms 40  
chart 12  
communications 39  
fish eye 3D 17  
initializing 3  
language 38  
navigation preferences 38  
system 37  
customizing 30  
overlay numbers 10  
viewing 30  
M
Man Overboard 24, 51  
map datum 38  
MapSource data 33  
mariner’s eye 3D  
colors 17  
O
routes  
object information  
accessing 12  
odometer 31  
Other Vessels 43  
creating 25  
deleting 26  
editing 26  
labels 38  
mark current location 24  
MENU key 5  
messages 55  
move a waypoint 24  
My Boat 42  
units of measure 37  
Shoreline Distance 39  
simulator 37  
mode 6  
Skyview 37  
P
viewing 33  
Pause Sonar 47  
route to 22  
Perspective 3D 15  
photos 12  
software license agreement 60  
software version 37  
N
S
Navaid Type 14  
safe-zone settings 43  
Safe Depth 17, 38  
Safe Height 39  
Safety Shading 14  
satellite imagery  
enabling 19  
physical specifications 54  
Points of Interest (POI) 14, 21, 28  
Position Format 38  
position tracking 51  
Posn. Precision 39  
Power/Backlight key 5  
Navigate To 11, 23, 25, 26, 52  
Navigation Alarms 40  
navigation charts 8  
navigation preferences 38  
New Waypoint 15  
NMEA 0183 Setup 39  
Save To Card 34, 35, 37  
ꢃꢁ  
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Index  
sonar  
advanced settings 47  
Time (options) 38  
tracks 18, 26  
transducer  
Waypoint IDs 39  
waypoints 15  
creating 24  
cone 17  
full screen 44  
dual frequency 47  
transferring data 33, 34  
Trip Odometer 31  
True (north) 38  
turn the unit off 3  
Turn Transition 38  
deleting 24, 25  
depth 47  
edit existing 15, 24  
mark current location 24  
moving 24  
scroll speed 46  
setting up 4647  
specifications 55  
split frequency 44  
split zoom 45  
viewing 33  
temperature log 45  
Sonar Setup 46  
specifications 54  
Speed Filter 37  
Speed Sources 38  
Split Frequency 44  
Split Zoom 45  
spot depths 14  
Surface Noise 47  
symbols 14  
Where To 22  
Whiteline 47  
U
unit ID number 6  
units of measure 37  
user data  
Z
zoom 48  
split 48  
backing up 34  
clearing 33  
transferring 34  
viewing 33  
V
System Alarms 41  
System Information 37  
viewing 6  
version (software) 37  
VHF radio 49  
viewing  
system settings 37  
currents 32  
other boats 35  
tide stations 32  
user data 33  
T
Temp Log 45  
Temp Offset 42  
Tides/Currents 12  
tide stations 32  
viewing information 12  
W
WAAS 37  
water temperature 57  
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For the latest free software updates (excluding map data) throughout the life of your  
Garmin products, visit the Garmin Web site at www.garmin.com.  
© 2009 Garmin Ltd. or its subsidiaries  
Garmin International, Inc.  
1200 East 151st Street, Olathe, Kansas 66062, USA  
Garmin (Europe) Ltd.  
Liberty House, Hounsdown Business Park, Southampton, Hampshire, SO40 9LR UK  
Garmin Corporation  
No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan  
May 2009  
Part Number 190-01074-10 Rev. A  
Printed in Taiwan  
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