Garmin GPSMAP 3005C User Manual

GPSMAP® 3005C

Owner’s Manual

© Copyright 2005, 2006 Garmin Ltd. or its subsidiaries

Garmin International, Inc.
1200 East 151st Street,
Olathe, Kansas 66062, U.S.A.
Tel. [phone] or 800/800.1020
Fax [phone]

All rights reserved. Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded or stored in any storage medium, for any
purpose without the express prior written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual onto a hard drive or other electronic storage medium to
be viewed and to print one copy of this manual or of any revision hereto, provided that such electronic or printed copy of this manual must contain the complete text of this copyright notice and
provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.

Information in this document is subject to change without notice. Garmin reserves the right to change or improve its products and to make changes in the content without obligation to notify any
person or organization of such changes or improvements. Visit the Garmin Web site (www.garmin.com) for current updates and supplemental information concerning the use and operation of this
and other Garmin products.

Garmin®, GPSMAP®, AutoLocate®, TracBack®, BlueChart®, BlueChart® g2™, MapSource®, See-Thru®, DynaColor™, and Ultrascroll™ are trademarks or registered trademarks of Garmin Ltd. or
its subsidiaries and may not be used without the express permission of Garmin.

Garmin (Europe) Ltd.
Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey,
SO51 9DL, U.K.
Tel. [phone]
Fax [phone]

Garmin Corporation
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March 2006 Part Number 190-00531-00 Rev. B Printed in Taiwan

INTRODUCTION > ABOUT THIS MANUAL AND MANUAL CONVENTIONS

INTRODUCTION

Thank you for choosing the Garmin® GPSMAP® 3005C. The GPSMAP 3005C
uses the proven performance of Garmin GPS and full-featured mapping to create
an unsurpassed marine Multi-Function Display (MFD). Take a moment now to
compare the contents of this package with the packing list on the outside of the
box. If any pieces are missing, contact your Garmin dealer immediately.

Installing Your GPSMAP 3005C

To install the GPSMAP 3005C, refer to the GPSMAP 3005C & GPS 17
Installation Instructions. To complete the installation, you need the appropriate

fasteners, tools, and mounts listed in each section. Installation items not provided
by Garmin should be available at most marine dealers. If you experience
difficulty installing the unit, contact Garmin Product Support or an installation
professional in your area.

About This Manual

To get the most out of your new navigation system, read this manual and learn
the operating procedures for your unit in detail. This manual is organized into the
following sections:

The Introduction contains the Table of Contents, Product Registration, and the
Software License Agreement.

The Getting Started section provides a unit overview and information that
teaches you a basic working knowledge necessary to use the GPSMAP 3005C.

The Basic Operation section provides you with details and step-by-step
instructions for creating and using waypoints, navigating a route, and using the
FIND key.

The Main Pages section provides detailed explanations about each page in the
GPSMAP 3005C and step-by-step directions on using the pages.

The Main Menu section provides detailed explanations about the Main Menu
and how to use it to configure your unit.

If you have either a Garmin GSD 20, GSD 21 (Serial), or GSD 22 (Ethernet)
sounder connected to your GPSMAP 3005C, see the Using Sonar section.

If you have a GDL30/GDL30A Marine Weather Satellite Receiver connected to
your GPSMAP 3005C, see the XM WX Weather

The Appendix contains specifications, regulatory information, unit care
information, optional accessories, and maintenance information. You can also find
warranty and FCC information in the Appendix.

An Index is provided at the end of the manual for reference.

Manual Conventions

This manual uses the term Warning to indicate a potentially hazardous situation,
which, if not avoided, could result in death or serious injury.

This manual uses the term Caution to indicate a potentially hazardous situation,
which, if not avoided, may result in minor injury or property damage. It may also
be used without the symbol to alert you to avoid unsafe practices.

section.

GPSMAP 3005C Owner’s Manual i

INTRODUCTION > TABLE OF CONTENTS

TABLE OF CONTENTS

Introduction ............................................................................................... i

Installing Your GPSMAP 3005C ...................................................................... i

About This Manual .......................................................................................... i

Manual Conventions ....................................................................................... i

Product Registration ...................................................................................... v

Contact Garmin .........................................................................................................v

Software License Agreement ........................................................................ v

Warning .......................................................................................................... iv

Caution ........................................................................................................... iv

Getting Started ......................................................................................... 1

Unit Overview ................................................................................................. 1

Using the GPSMAP 3005C Keypad ............................................................... 2

Using Soft Keys ........................................................................................................3

Status Bar ..................................................................................................................3

Turning on the GPSMAP 3005C ....................................................................4

Adjusting the Backlight ............................................................................................4

Initializing the GPS Receiver ......................................................................... 5

Receiver Status and Accuracy ..................................................................................6

GPS Setup .................................................................................................................6

Using Simulator Mode ................................................................................... 7

Basic Operation ....................................................................................... 8

Using the GPSMAP 3005C ............................................................................. 8

Understanding the Features ......................................................................................8

Selecting Options and Entering Data ........................................................................8

Using Additional Map Data ......................................................................................9

Using the Map Pointer ............................................................................................10

Finding an Item ............................................................................................. 11

Creating and Using Waypoints ................................................................... 12

Creating Waypoints Using the ENTER/MARK Key .............................................12

Creating Waypoints Using the Map ........................................................................13

Creating Waypoints Manually ................................................................................14

Reviewing and Editing Waypoints .............................................................. 15

Moving a Waypoint ................................................................................................16

Using Waypoint Lists .............................................................................................16

User Waypoints .......................................................................................................17

Proximity Waypoints ..............................................................................................18

Navigating to a Destination ......................................................................... 19

Selecting a Map Item Go To Destination ...............................................................19

Follow Track and TracBack Navigation .................................................................20

TracBack Tips .........................................................................................................22

Man OverBoard (MOB) ................................................................................. 22

Creating and Using Routes ......................................................................... 23

Creating a New Route .............................................................................................23

Navigating a Saved Route ......................................................................................24

Creating a Quick NAV Route .................................................................................25

Copying a Route .....................................................................................................25

Deleting a Route .....................................................................................................25

Editing a Route .......................................................................................................25

Planning Routes ......................................................................................................28

Main Pages ............................................................................................. 29

Configuring Main Pages .............................................................................. 30

Using Function Windows ............................................................................ 32

Function Window Adjustments ..............................................................................32

Viewing a Main Page in Full-Screen Mode ............................................................33

ii GPSMAP 3005C Owner’s Manual

INTRODUCTION > TABLE OF CONTENTS

Map Page .......................................................................................................33

Using the Map Pointer ............................................................................................34

Selecting Map Ranges ............................................................................................35

Cartography ............................................................................................................35

Map Page Options ..................................................................................................36

Map Split Page .............................................................................................. 38

Compass Page .............................................................................................. 38

Highway Page ............................................................................................... 39

Changing the Highway Perspective Range ............................................................40

Highway Page Options ...........................................................................................40

Showing or Hiding Cartography .............................................................................40

Main Menu .............................................................................................. 41

GPS Tab ......................................................................................................... 41

Tide Tab ......................................................................................................... 42

Tide Sub Tab ...........................................................................................................42

Current Sub Tab ......................................................................................................44

Celestial Tab ................................................................................................. 45

Trip Tab .......................................................................................................... 46

Weather Tab .................................................................................................. 47

Points Tab .....................................................................................................47

Routes Tab .................................................................................................... 48

Tracks Tab ..................................................................................................... 49

DSC (Digital Selective Calling) Tab ............................................................. 50

Understanding DSC Distress Calls .........................................................................51

Understanding Position Reports .............................................................................51

Review DSC Waypoint ...........................................................................................51

Setting Up DSC ......................................................................................................52

Using the NAV Key ................................................................................................52

Card Tab ........................................................................................................ 53

Messages Tab ............................................................................................... 54

Viewing Detailed Message Information .................................................................54

Alarms Tab .................................................................................................... 55

System Alarms ........................................................................................................55

Nav (Navigation) Alarms ........................................................................................56

Sonar Alarms* ........................................................................................................56

System Tab ................................................................................................... 57

Update Sub Tab .......................................................................................................62

Network Tab .................................................................................................. 62

Pages Tab ...................................................................................................... 63

Map Tab ......................................................................................................... 64

AIS Sub Tab ............................................................................................................67

Temp (Temperature) Tab .............................................................................. 69

Sonar Tab ...................................................................................................... 69

Highway Tab ................................................................................................. 70

XM Tab ........................................................................................................... 70

Using Favorites .......................................................................................................71

Using Sonar ........................................................................................... 72

Understanding Sonar ................................................................................... 72

Using Dual Frequency ............................................................................................72

Using Dual Beam ....................................................................................................72

Understanding the Sonar Display ...........................................................................73

SONAR PAGE ............................................................................................... 74

Configuring the Sonar Page ....................................................................................75

Using the Sonar Adjustment Menu .........................................................................76

Using the Pointer on the Sonar Page ......................................................................77

Marking an Underwater Waypoint .........................................................................78

Sonar Tab ...................................................................................................... 78

General Sub Tab .....................................................................................................78

Graph Sub Tab ........................................................................................................79

Water Temp Sub Tab ...............................................................................................80

GPSMAP 3005C Owner’s Manual iii

INTRODUCTION > TABLE OF CONTENTS

XM WX Weather ..................................................................................... 81

Customizing Preset Weather Displays ....................................................... 81

Weather Tab .................................................................................................. 83

Marine Bulletins Sub Tab .......................................................................................83

Appendix ................................................................................................ 84

Specifications ............................................................................................... 84

Installing and Removing the Data Card ..................................................... 85

Satellite Information ..................................................................................... 86

What is WAAS/EGNOS? ............................................................................... 86

WAAS Capability .......................................................................................... 87

Digital Selective Calling (DSC) .................................................................... 87

What is DSC? .........................................................................................................87

LORAN TD System ....................................................................................... 89

Caring for the GPSMAP 3005C ....................................................................90

Navigation Terms ......................................................................................... 91

Messages and Alarms .................................................................................. 93

Optional Accessories ................................................................................... 95

Limited Warranty .......................................................................................... 96

FCC Compliance ...........................................................................................97

Declaration of Conformity (DoC) ................................................................ 97

XM Satellite Radio Service Agreement ....................................................... 97

Weather Data Warranty ................................................................................ 98

Index ....................................................................................................... 99

iv GPSMAP 3005C Owner’s Manual

INTRODUCTION > PRODUCT REGISTRATION AND SOFTWARE LICENSE AGREEMENT

Product Registration

Help us better support you by completing our online registration today! Have the
serial number of your GPSMAP 3005C handy, and connect to our Web site at

http://www.garmin.com. Click the Product Registration link.

Use this area to record the serial number (8-digit number located on the back of
the box) in case your GPSMAP 3005C is lost, stolen, or needs service. Be sure to
keep your original sales receipt in a safe place, or attach a photocopy inside the
manual.

Serial Number: ___ ___ ___ ___ ___ ___ ___ ___

Contact Garmin

If you encounter problems while using your GPSMAP 3005C, or if you have any
questions, in the U.S.A. contact Garmin Product Support by phone: [phone]
or 800/800.1020, Monday–Friday, 8 AM–5 PM Central Time; or go to

http://www.garmin.com/support/, and click Product Support.

In Europe, contact Garmin (Europe) Ltd. at 44/0870.8501241.

Software License Agreement

BY USING THE GPSMAP 3005C, 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.

GPSMAP 3005C Owner’s Manual v

INTRODUCTION > WARNING AND CAUTION

Warning

Failure to avoid the following potentially hazardous situations could result in an
accident or collision resulting in death or serious injury.

When navigating, carefully compare information displayed on the GPSMAP 3005C to all
available navigation sources, including information from visual sightings, and maps. For
safety, always resolve any discrepancies or questions before continuing navigation.

WARNING: This product, its packaging, and its components contain chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. This Notice is being
provided in accordance with California’s Proposition 65. If you have any questions or would like additional information, please refer to our Web site at http://www.garmin.com/prop65.

Use the electronic chart in the GPSMAP 3005C only to facilitate, not to replace, the use of
authorized government charts. Official government charts and notices to mariners contain
all information needed to navigate safely.

Use terrain and obstacle data only as an aid to situational awareness.

Caution

Failure to avoid the following potentially hazardous situations may result in injury or
property damage.

Use the GPSMAP 3005C only as a navigational aid. Do not attempt to use the GPSMAP
3005C for any purpose requiring precise measurement of direction, distance, location, or
topography.

Map Data Information: One of the goals of Garmin is to provide customers with the most complete and accurate cartography that is available to us at a reasonable cost. We use a combination of
governmental and private data sources, which we identify in product literature and copyright messages displayed to the consumer. Virtually all data sources contain inaccurate or incomplete data
to some extent. In some countries, complete and accurate map information is either not available or is prohibitively expensive.

The Global Positioning System (GPS) is operated by the United States government,
which is solely responsible for its accuracy and maintenance. The government’s system is
subject to changes which could affect the accuracy and performance of all GPS equipment,
including the GPSMAP 3005C. Although the GPSMAP 3005C is a precision navigation
device, any navigation device can be misused or misinterpreted and, therefore, become
unsafe.

iv GPSMAP 3005C Owner’s Manual

Unit Overview

PAGE

QUIT

ENTER

MARK

ADJ

MENU

DATA

FCTN

FIND

CNFG

NAV

MOB

Serial number tag

GETTING STARTED > UNIT OVERVIEW

GETTING STARTED

Data card slot

Slide the data card door in

the direction of the arrow

(to the left) and pull to open it.

Connection ports

GPSMAP 3005C Owner’s Manual 1

Soft keys

Interface keys

GETTING STARTED > USING THE GPSMAP 3005C KEYPAD

Using the GPSMAP 3005C Keypad

POWER Key

• Press and hold to turn the unit on or off.

• Press and release to adjust backlighting.

PAGE Key

• Press to cycle through the main pages in sequence.

• Press to end an operation in progress and return to the
main page.

QUIT Key

• Press to cancel data entry or exit a page.

ENTER/MARK Key

• Press and release to enter highlighted items and data
or confirm on-screen messages.

• Press and hold to mark your current location as a
waypoint.

DATA/CNFG Key

• Press to show or hide function windows and data
fields on a main page.

• Press and hold to open the Configuration window.

RANGE Keys

• Press to zoom in or out on the map.

ROCKER Key

• Press up, down, right, or left to move through lists,
highlight fields, on-screen buttons and icons, enter
data, or move the map pointer.

ADJ/MENU Key

• Press and release to view options for a page.

• Press and hold to open the Main Menu.

NAV/MOB Key

• Press to open the Navigation menu.

• Press and hold to mark and create a track back to
the marked location.

FIND Key

• Press to search for points such as user waypoints,
cities, and services.

FCTN Key

• Press to cycle through function windows.

2 GPSMAP 3005C Owner’s Manual

GETTING STARTED > USING THE GPSMAP 3005C KEYPAD

Using Soft Keys

Soft keys are located along the bottom of the screen and are used as shortcuts to
select the most commonly used options for the selected page, window, or tab. To
select a soft key, press the key directly below it.

Soft key options

Status Bar

At the top of each page, the status bar provides current status information for
connected devices and several of the MFD functions. As additional devices are
added to the MFD or Garmin Marine Network, an icon for each device appears
on the status bar.

Alarm alerts also appear on the status bar. To acknowledge an alarm, press QUIT.
If an alarm condition persists, it appears on the status bar until the alarm condition
no longer exists.

Status bar

GPSMAP 3005C Owner’s Manual 3

GETTING STARTED > TURNING ON THE GPSMAP 3005C

Turning on the GPSMAP 3005C

Before you turn on the GPSMAP 3005C, make sure the unit and GPS 17 antenna
are correctly installed on your vessel according to the instructions in the
GPSMAP 3005C & GPS 17 Installation Instructions.

The first time you turn on the GPSMAP 3005C, the GPS 17 receiver must collect
satellite data and determine its current location. To ensure proper initialization,
the GPSMAP 3005C is shipped from the factory in AutoLocate mode.

To turn on the GPSMAP 3005C:

1. Press and hold the POWER key until the unit turns on.

2. When I Agree is highlighted on the Warning Page, press ENTER to open
the Map Page.

Adjusting the Backlight

You can adjust the screen backlighting on the GPSMAP 3005C from any page by
using the POWER/BACKLIGHT key.

To turn off the GPSMAP 3005C:

Press and hold the POWER key until the unit turns off.

To adjust the backlight level:

1. Press and release the POWER/BACKLIGHT key.

2. Press up on the ROCKER to increase the brightness, or press down to
decrease.

TIP: After you open the Backlight adjustment window, press the

POWER/BACKLIGHT key repeatedly to cycle through the three

backlight settings: Highest, Middle, and Lowest.

Highest Middle Lowest

3. Press ENTER or QUIT to close the Backlight adjustment window.

4 GPSMAP 3005C Owner’s Manual

GETTING STARTED > INITIALIZING THE GPS RECEIVER

Initializing the GPS Receiver

When you turn on the GPSMAP 3005C, a Warning Page appears, showing unit
information, network connections (attached devices), and important information
regarding the proper use of the unit. It takes a few seconds for the unit to
search for attached devices. When the search is complete, the I Agree button is

The sky view shows a birds-eye view of the location of each satellite relative to
the receiver’s last known location. The outer circle represents the horizon (north
up), the inner circle 45º above the horizon, and the center point a location directly
overhead. You can also set the sky view to Track Up, which causes the top of the
sky view to align along your current track heading.

highlighted. After reading the warning, press ENTER.

GPS status

Next, you see the first of the main pages, the Map Page. The GPSMAP 3005C
begins searching for GPS satellites. The first time the unit acquires satellites takes
several minutes. Afterward, acquisition times are quicker during normal use. The

Status bar

GPS status icon on the left side of the status bar shows the progress of the satellite
acquisition process.

Status field

GPS icon status colors are:

• Red—acquiring satellites/lost satellite reception.

• Orange—ready for navigation/ready for navigation with WAAS.

• Gray—lost GPS connection. (Check GPS antenna wiring connections.)

A detailed visual reference of the satellite acquisition, GPS receiver status, and
accuracy is available on the GPS tab on the Main Menu.

To view the

1. Press and hold ADJ/MENU to open the Main Menu.

2. Use the

When viewing the GPS Info sub tab, a signal strength bar for each satellite in
view appears on the right of the page, with the appropriate satellite number
underneath each bar. The numbers below each bar represent the particular satellite
that is being received. Numbers above 33 indicate WAAS satellites. For more
information about WAAS, see the “Appendix.”

GPS tab information:

ROCKER to highlight the GPS tab.

The progress of satellite acquisition is shown in three stages:

• No signal strength bars—the receiver is looking for the satellites
indicated.

• Hollow signal strength bars—the receiver has found the indicated
satellite(s) and is collecting data.

• Solid green signal strength bars—the receiver has collected the necessary
data and the satellite(s) are ready for use.

icon

GPS Tab

GPSMAP 3005C Owner’s Manual 5

GETTING STARTED > INITIALIZING THE GPS RECEIVER

Receiver Status and Accuracy

The receiver status is shown in the Status field on the Info sub tab. Current
accuracy is shown in the EPE (Estimated Position Error) field. Accuracy uses
many factors to calculate location accuracy in feet or meters including the number
of received GPS satellites, signal strength, and satellite orientation. The Status
field shows one of the following conditions:

• Searching for Satellites—the receiver is looking for any satellites and
collecting data from satellites visible at its last known or initialized
location, but has not collected enough data to calculate a fix. This process
can take up to five minutes.

• Ready For Navigation—at least three satellites with good geometry have
been acquired, and your location is now being calculated in latitude and
longitude; or at least four satellites have been acquired, and your location
is being calculated in latitude, longitude, and elevation. “Ready For
Navigation with WAAS” appears when you are receiving WAAS satellite
corrections in 2-D or 3-D, and a D appears on the strength bar of satellites
being corrected.

After the receiver has collected information from at least three satellites, the
Status field shows either “Ready for Navigation” or “Ready for Navigation with
WAAS.” The GPSMAP 3005C is now ready for use. Press QUIT to return to the
Map Page.

GPS Setup

The Setup sub tab provides access to functions and features relating to initializing
the GPS receiver.

To access the GPS Setup sub tab:

1. Press and hold ADJ/MENU to open the Main Menu.

2. Highlight the GPS tab, and then highlight the Setup sub tab.

The GPS Setup tab contains the following options:

Skyview Orientation—allows you to select a sky view orientation, either North
Up or Track Up, for the GPS Info sub tab only.

Source

—set to Garmin when using a Garmin sensor (GPS 17); set to NMEA

when using any other GPS NMEA source.

WAAS—turns WAAS on or off. See page

The following soft keys are active only when the unit is not receiving satellites
and the Source is not set to Garmin:

• AutoLocate—allows the receiver to find your location automatically. This
process can take up to five minutes.

• Set Position—allows you to initialize the receiver from the Map Page to
initially help the receiver acquire satellites more quickly.

Setup Sub Tab

86 for more information.

6 GPSMAP 3005C Owner’s Manual

Using Simulator Mode

Simulator Mode is great for practicing with the unit if you are indoors where
satellite signals are not available. When the GPSMAP 3005C is in Simulator
Mode, the GPS receiver is turned off. The unit cannot be used for actual
navigation.

NOTE: Do not try to navigate in Simulator Mode. While in Simulator Mode,

the GPS receiver is turned off. Any satellite signal strength indicators shown
are only simulations and do not indicate the strength of actual satellite signals.

To turn on Simulator Mode:

1. Press and hold ADJ/MENU to open the Main Menu.

2. Press up or down on the ROCKER to highlight the System tab.

3. Press right on the ROCKER to highlight the General sub tab.

4. Highlight the System Mode field, and press ENTER.

5. Highlight Simulator, and press ENTER.

When Simulator Mode is active, the message “Simulating Operation” appears in
the status bar at the top of each page.

To

set up Simulator Mode:

Highlight the Setup button, and press ENTER. The Simulator Setup

window appears. The following options are available:

• Current Time/Date—enter a simulated date and time.

• Speed—enter a simulated speed.

• Track Control—select track control. Auto Track steers to the current
navigation point; User Track allows you to enter a heading in the
Track field.

• Track—enter a simulated heading.

Use the Set Position soft key to set your location while in Simulator Mode.

You can also control the speed and track from the Compass or Highway Page.
Press up or down on the ROCKER to increase or decrease the speed; press left or
right to change the heading.

To

turn off Simulator Mode:

1. Press and hold ADJ/MENU to open the Main Menu.

2. Press up or down on the ROCKER to highlight the System tab.

3. Press right on the ROCKER to highlight the General sub tab.

4. Highlight the System Mode field, and press ENTER.

5. Highlight Normal, and press ENTER.

When Normal Mode is active, the message “Normal” appears in the status bar at
the top of each page.

GETTING STARTED > USING SIMULATOR MODE

GPSMAP 3005C Owner’s Manual 7

BASIC OPERATION > USING THE GPSMAP 3005C

BASIC OPERATION

Using the GPSMAP 3005C

This section explains how to enter and select information with the
GPSMAP 3005C.

Understanding the Features

The advanced keypad system on the GPSMAP 3005C is designed to allow
qyou to select options and enter data quickly and conveniently. As you progress
through this owner’s manual, you are directed to press a specific key or highlight
a field on the screen. When you are directed to press a key, you should press and
quickly release the key. If you need to hold down the key for a period of time
to activate a secondary function, the instructions tell you to do so. The location
of the highlight is controlled by the ROCKER. When a field is selected on the
screen, it is highlighted in yellow.

The following terms are used throughout this manual:

• Highlight—move the highlighted area on the screen up, down, left, or right
with the ROCKER to select individual fields. Moving the highlight to a
given location allows you to make a selection, begin data entry, or scroll
through a list.

• Field

• Soft keys—located along the bottom of the screen, soft keys are used as

• On-Screen button

—the location on a page where data or an option can be entered and
displayed. Highlight a field using the ROCKER to begin entering data or
selecting options.

shortcuts to select the most commonly used options for the selected page,
window, or tab. To select a soft key, press the key directly below it.

—use the ROCKER to highlight an on-screen button,

and press ENTER to select the button.

Highlighted field

Field

On-screen

button

Soft keys

• Scroll bar—When viewing a list of items too long to show on the screen,
a scroll bar appears along the right side of the list. To scroll through a list,
press up or down on the ROCKER. Press right or left on the ROCKER to
scroll one page at a time.

• Default—the factory setting saved in the unit’s memory. You can change
the settings, but you can also revert to the factory (default) settings when
you press the Factory Dflts soft key on the System–General sub tab.

Selecting Options and Entering Data

To select options and enter data, use the ROCKER to highlight or select an
item in a list or a field on the screen. Use the ENTER key, soft keys, and the
ROCKER to select options, enter names and numbers in data fields, and activate
your selections.

8 GPSMAP 3005C Owner’s Manual

BASIC OPERATION > USING THE GPSMAP 3005C

To select an optional feature:

1. From any page, press ADJ. The adjustment menu shows a list of optional
features specific to that page.

Not all data fields are programmable. When moving about a page with these
fields, the highlight skips them.

2. Use the ROCKER to move the highlight up, down, left, or right to the
selection you want, and press ENTER to select the option.
OR
Press the soft key below the option you want to select.

To select an on-screen button:

On a page with on-screen buttons, use the ROCKER to highlight an

on-screen button, and press ENTER.

To select an option using soft keys:

Press the button below the soft key you want to select.

Using Additional Map Data

The GPSMAP 3005C comes standard with a built-in basemap showing cities,
interestates, coastline detail, and U.S. Tide Stations. Optional preprogrammed
Garmin data cards and MapSource CD-ROMs enhance the versatility of your
GPSMAP 3005C. With optional BlueChart cartography, you can access marine
navaids, wrecks, obstructions, anchorage locations, shaded depth contours,
interidal zones, spot soundings, port plans, and more.

The GPSMAP 3005C supports Garmin’s new BlueChart
cartography features integrated mapping, 2-D or 3-D map perspective, tide and
current data, improved IALA symbols, navaids, marinas, boat ramps, roads, and

To exit a menu or return to the previous setting:

Press QUIT. The QUIT key moves backward through your steps. Press

QUIT repeatedly to return to the starting page.

To enter data in a data field:

1. Use the ROCKER to highlight the data field, and press ENTER to edit it.

2. Press up or down on the ROCKER to select characters. Press and release
the ROCKER to move character by character through the list; press and
hold the ROCKER to move rapidly through the list.

more. You can also access additional data including highly detailed coastal roads
and points of interest such as restaurants, lodging, and local attractions. Full-color
aerial photographs of ports, marinas, bridges, and navigational landmarks are also
included on many preprogrammed BlueChart g2 data cards.

See your Garmin dealer or visit the Garmin Web site (www.garmin.com) for
more information on available pre-programmed Garmin data cards and other
MapSource programs.

3. Press right on the ROCKER to move to the next character on the line
or press left to move back to the previous character. Press left on the
ROCKER from the first character position to clear the field. If there are
more than two lines of data, keep pressing right on the ROCKER to go to
the next line.

4. Press ENTER to accept data and move to the next field.

®

g2™ technology. This

NOTE: Preprogrammed BlueChart g2 data cards are compatable only with

software version 3.0 or later.

GPSMAP 3005C Owner’s Manual 9

BASIC OPERATION > USING THE GPSMAP 3005C

Using the Map Pointer

Use the map pointer to pan away from your current location and scroll to other
map areas around the world (even outside of your current detail coverage). As
you pan past the edge of the current map display, the screen actively scrolls
forward to provide continuous map coverage. An hourglass symbol appears by
the pointer while the unit is busy drawing new map detail.

Controlled by the ROCKER, the map pointer is an important tool that can be
used to pan to other map locations, mark and edit waypoints and routes, and

As you move the map pointer, the distance and bearing from your current
location to the map pointer are shown in the upper-left corner of the map, with
the map pointer’s location coordinates. Keep in mind that when the map pointer
is stationary, the distance and bearing from your present location changes as your
boat moves. The map pointer can also be used to snap to on-screen waypoints and
map items, allowing you to review a selected location directly from the map.

To select an on-screen waypoint or map item with the map pointer:

1. Use the ROCKER to move the pointer to the waypoint or map item. When

review location data of on-screen map items and waypoints.

Map item name, pointer coordinates,

distance, and bearing

Map

pointer

2. Press ENTER to view details of the map item. When using BlueChart or

Additional

information

tabs

a waypoint or map item is selected, it is highlighted on-screen with the
name and location shown.

MapSource data, or if waypoints are grouped tightly together due to the
Range setting, additional tabs appear on the Review Waypoint Page. Use
the ROCKER to highlight the individual tabs to view the information and
additional options.

Map

window

To move the map pointer:

Press the ROCKER to move the map pointer up, down, left, right, or

diagonally.

10 GPSMAP 3005C Owner’s Manual

BASIC OPERATION > FINDING AN ITEM

To eliminate the pointer and re-center your location on the map:

Press QUIT.

To view additional BlueChart chart notes:

1. Select an on-screen BlueChart map item, and press ENTER.

2. Use the ROCKER to highlight the Chart <name> tab. A chart summary
appears below the tab.

3. Press the Notes soft key. Notes for the chart appear.

Finding an Item

Press FIND to search for items near your current location, including waypoints,
anchorages, cities, marine services, navaids, restricted areas, wrecks, celestial
information, tides, and currents. If you pan around on the map window and press
FIND, the unit centers its search from the map pointer location. When using
BlueChart, BlueChart g2, or MapSource data, your location or the map pointer
must be within the map outline area to search for information from that area.

To find an item from your current location:

1. From any page, press FIND to open the Find From Current Position Page.

BlueChart Notes

4. Highlight the notes field, and press ENTER to scroll the text up or down
using the ROCKER.

5. Press QUIT to exit.

GPSMAP 3005C Owner’s Manual 11

2. Highlight a category, and press ENTER. Select a subcategory, if
necessary.

3. Some items have a By Name tab. For By Name, select the top field to
spell out the name, or scroll through the list.

BASIC OPERATION > CREATING AND USING WAYPOINTS

4. Some items have a Filter List button that allows you to enter letters or
numbers of the item name. The search result shows only items matching
the entered letters or numbers. Highlight the Filter List button, and press

ENTER. Enter data, as needed, to narrow your search.

To find an item from another location on the map:

1. Open the Map Page. Use the ROCKER to pan to the location you want,
and then press FIND. The Find From (Location) Page appears.

2. Using the ROCKER, highlight a category, and press ENTER.

To view details about an item:

Highlight an item in the search results list, and press ENTER. The Review

Page appears, showing item information, map location, chart name,
distance/bearing, and options for creating a waypoint or viewing the next
item in the search results list.

Item

information

Distance,

bearing,

chart name

of item

Creating and Using Waypoints

The GPSMAP 3005C stores up to 4,000 alphanumeric waypoints, each with a
user-defined icon, comment, depth, and water temperature.

NOTE: If you are using an optional Garmin GSD 20, GSD 21, or GSD 22

sounder module, the Depth and Water Temp fields fill in automatically.

You can create waypoints using three basic methods:

• ENTER/MARK—use the ENTER/MARK key to quickly mark your
current location.

• Graphically—use the map display to define a new waypoint location.

• Manually—enter new waypoint coordinates manually.

Creating Waypoints Using the ENTER/MARK Key

Use the ENTER/MARK key to capture your current location (or pointer or map
item location) to create a new waypoint. You must have a valid position fix to
mark your current location.

To

mark your current location:

1. Press and hold ENTER/MARK until the Review Waypoint Page appears.

The GPSMAP 3005C captures its current location and creates a default
name and symbol for the new waypoint.

2. To accept the waypoint with the default name and symbol, press ENTER.

To change any of the available waypoint information, see page 15.

Soft key

12 GPSMAP 3005C Owner’s Manual

Review Waypoint Page

Creating Waypoints Using the Map

You can create a waypoint by using the map pointer to point to any map
location or map feature. When you move the pointer over a map item, you see a
highlighted description of the item.

To create a new waypoint using a map location:

1. Use the ROCKER to move the pointer to the map location you want.

2. Press and quickly release ENTER/MARK to capture the pointer location.
Do not hold the button down; doing so marks your current location, not the
map location. The Review Waypoint Page appears.

3. To accept the waypoint with the default information, press ENTER.

OR

To change any waypoint information, highlight the appropriate field and
press ENTER. After entering your changes, press the OK soft key. For
information on editing waypoints, see page 15.

BASIC OPERATION > CREATING AND USING WAYPOINTS

To create a new waypoint from a map feature:

1. Use the ROCKER to move the map pointer and highlight the map feature
you want.

2. Press ENTER/MARK to capture the pointer location. The Review Page for
the selected map feature appears.

3. Press the Create Wpt soft key to open the Review Waypoint Page.

4. To accept the waypoint with the default information, press ENTER.

OR

To change any waypoint information, highlight the appropriate field and
press ENTER. After entering your changes, press the OK soft key.

Waypoint Created from a Map Feature

GPSMAP 3005C Owner’s Manual 13

BASIC OPERATION > CREATING AND USING WAYPOINTS

Creating Waypoints Manually

You can manually enter position coordinates to create a waypoint using the Points
tab on the Main Menu. This method is useful for creating a waypoint at a specific
latitude/longitude position from a chart or other source.

CAUTION: When entering a waypoint manually, be sure that the unit is set

to the same position format and map datum as the paper chart or coordinates
source. Entering coordinates into the GPSMAP 3005C while it is set to a datum
different from the datum in which the coordinates were created can result in an
incorrect waypoint location.

To create a new waypoint by entering position coordinates:

1. Press and hold ADJ/MENU to open the Main Menu.

2. Highlight the Points tab. You can also mark your present location using
the steps on page 13, and then proceed to step 4.

3. Press the New Waypoint soft key. The Review Waypoint Page appears
with the next available waypoint number and the receiver’s last known
location as the default name and location.

4. Use the ROCKER to highlight the Position field, and press ENTER.

5. Enter position coordinates using the ROCKER, and press ENTER.

6. To accept the waypoint with the default information, press the OK soft key
OR
To change any waypoint information, highlight the appropriate field and
press ENTER. After entering your changes, press the OK soft key. For
information on editing waypoints, see page 15.

You can

enter location

coordinates

manually.

Two other options are available on the Review Waypoint Page:

• Add to Route—adds the new waypoint to the end of a route.

• Move Wpt (waypoint)—moves or projects the waypoint to a new location
on the map display.

To add a new waypoint to a route:

1. Press the Add To Route soft key. The Select Route Page appears.

2. Highlight a route or New Route, and press ENTER.

3. Highlight OK, and press ENTER to add the waypoint to the route.

Review Waypoint Page

14 GPSMAP 3005C Owner’s Manual

BASIC OPERATION > REVIEWING AND EDITING WAYPOINTS

Reviewing and Editing Waypoints

After you create a waypoint, you can modify, review, rename, move, or delete it
using the Review Waypoint Page. This page shows waypoint details, and a map
window that you can pan or zoom in and out.

To access the Review Waypoint Page:

Use the ROCKER to highlight a waypoint on the Map Page, and press

ENTER.

To access the Review Waypoint Page from a waypoint list:

1. Press and hold ADJ/MENU to open the Main Menu. Use the ROCKER to
highlight the Points tab, and then highlight a waypoint from the list on the
User or Proximity sub tab.

2. Press ENTER to open the Review Waypoint Page. Additional information
tabs do not appear in this mode.

Map window

Waypoint

name

Symbol

Comment

Position

coordinates

To change the waypoint name:

1. Highlight the waypoint name field, and press ENTER.

2. Use the ROCKER to enter a new name, and press ENTER.

To change the waypoint symbol:

1. Highlight the waypoint symbol field to the left of the waypoint name, and
press ENTER.

2. Use the ROCKER to select a different symbol, and press ENTER.

Waypoint Symbol List

To change the Comment, Position, Depth, or Water temp:

Depth/water

temp

Review Waypoint Page

GPSMAP 3005C Owner’s Manual 15

1. Highlight the Comment, Position, Depth, or Water temp field, and press
ENTER.

2. Use the ROCKER to enter new data, and press ENTER.

BASIC OPERATION > REVIEWING AND EDITING WAYPOINTS

To access the map window on the Review Waypoint Page:

1. Press FCTN to highlight the map window. You can pan the map, change
the map range, or use the map pointer to select a location.

Map window

Review Waypoint Page

2. Press FCTN to return to the left side of the Review Waypoint Page.

Moving a Waypoint

You can modify a waypoint by moving or “projecting” the distance and bearing
from its present location to a new location.

To

move the waypoint on the map:

1. Press the Move Wpt soft key. The map window on the right side of the
page is highlighted with the selected waypoint centered and highlighted on
a map display. The word MOVE appears below the pointer.

2. Use the

3. Press ENTER to accept the new waypoint location.

4. Press FCTN to return to the left side of the Review Waypoint Page.

Using Waypoint Lists

The Points tab on the Main Menu has two sub tabs, User and Proximity, which
allow you to manage a large number of waypoints quickly and efficiently. The
Proximity sub tab also provides a continuously updated proximity waypoint alarm
that can be used to define an alarm circle around submerged hazards or shallow
waters.

ROCKER to move the waypoint to the new location. The distance
and bearing from the waypoint’s current location appears in the upper-left
corner of the map window.

16 GPSMAP 3005C Owner’s Manual

BASIC OPERATION > REVIEWING AND EDITING WAYPOINTS

To access the Points tab from the Main Menu:

1. Press and hold ADJ/MENU to open the Main Menu.

2. Use the ROCKER to highlight the Points tab, and highlight either the User
or Proximity sub tab.

Sub tabs

To scroll through and review the waypoint list:

1. Use the ROCKER to highlight the Points tab on the Main Menu, and then
highlight the User sub tab.

2. Press up or down on the ROCKER to scroll through the list of waypoints;
press right or left on the ROCKER to scroll by page.

3. Press ENTER to review the highlighted waypoint on the Review Waypoint
Page.

4. Press the Next soft key to return to the waypoint list. The next waypoint in
the list is automatically highlighted.

Deleting Waypoints

The following soft keys are available when you highlight a waypoint on the User
sub tab:

• New Waypoint—creates a new waypoint.

• Delete—deletes the selected waypoint from the list, and from any route in

which the waypoint was used.

• Del by Smbl—deletes waypoints that use the same symbol.

• Delete All—deletes all waypoints from the unit.

NOTE: When you delete a waypoint from the list, it cannot be recovered from

User Waypoints

The User sub tab on the Points tab shows a master list of all waypoints currently
stored in memory. From the User sub tab, you can review, edit, rename, or delete
individual waypoints, or delete all user waypoints. The number of available and
used waypoints are shown at the bottom of the User sub tab. Stored waypoints are
arranged in alphanumeric order.

To delete a single waypoint from the User sub tab:

1. Use the ROCKER to highlight the waypoint you want to delete, and then
press the Delete Waypoint soft key. A confirmation message appears.

2. Highlight OK, and press ENTER to delete the selected waypoint.

the unit. Save important waypoints to a data card, or write them down.

To delete waypoints by symbol:

1. On the User sub tab, highlight the waypoint you want to delete.

2. Press the Delete By Symbol soft key.

GPSMAP 3005C Owner’s Manual 17

BASIC OPERATION > REVIEWING AND EDITING WAYPOINTS

3. Use the ROCKER to highlight the symbol of the waypoints you want to
delete, and press ENTER.

4. Highlight OK, and press ENTER to delete the waypoints by symbol.
Otherwise, press the Cancel soft key to return to the User sub tab without
deleting any waypoints.

To delete all user waypoints:

1. On the User sub tab, press the Delete All soft key.

2. Highlight OK, and press ENTER to delete all user waypoints.

Proximity Waypoints

Use the Proximity sub tab to define an alarm circle around a stored waypoint. The
alarm circle can help you avoid reefs, rocks, or restricted waters. You can add
proximity alarms to a maximum of 10 waypoints or on-screen map items, with a
maximum alarm radius of 99.99 nautical or statute miles or kilometers.

Proximity

circle

Proximity
waypoint

If a proximity alarm circle overlaps an existing alarm circle, the message

only alerts for one of the overlap points, use caution when navigating in these
areas. If you enter a red proximity circle overlap, you are alerted only to the
closest proximity waypoint.

To add a

1. Press the New Alarm soft key on the Proximity sub tab. The Find From

2. Highlight a category, and press ENTER.

3. Use the ROCKER to highlight a waypoint or map item from the list, and

4. Press the OK soft key. The Proximity sub tab appears with the Distance

5. Press ENTER and use the ROCKER to enter a proximity radius

6. Press ENTER when finished.

proximity waypoint:

Current Position Page appears.

press ENTER. The Review Page appears for the selected waypoint or
map item within a red circle.

highlighted.

(up to 99.99 units).

To turn proximity alarms on or off:

1. Use the ROCKER to highlight the field below Proximity Alarm on the
Proximity sub tab, and press ENTER.

2. Select ON or OFF, and press ENTER.

To clear one or all proximity waypoints from the list:

1. Use the ROCKER to highlight the proximity waypoint you want to clear.

2. To clear a single alarm, press the Delete soft key.
OR
To clear all proximity waypoints, press the Delete All soft key. A
confirmation message appears.

3. Press the OK soft key to delete the proximity waypoint. Otherwise, press
the Cancel soft key, or press QUIT to cancel.

“Proximity Overlaps Another Proximity Waypoint” appears. Because the unit

18 GPSMAP 3005C Owner’s Manual

BASIC OPERATION > NAVIGATING TO A DESTINATION

Navigating to a Destination

Using the NAV key, the GPSMAP 3005C provides four ways to navigate to a
destination: Go To Point, Follow Track, TracBack, and Follow Route. When you

To Go To a point:

1. Press NAV.

2. Highlight Go To Point, and press ENTER. The Find From Current Position

are navigating, you see a straight line on the Map Page that always runs from your
current location to the destination. The easiest method for selecting a destination

3. Highlight Waypoints, and press ENTER. (You can also choose to go to

is the Go To function, which allows you to select a destination point and then set
a direct course to it from your present location. If you highlight a point on a list

4. Select a waypoint from the By Name or Nearest tab list, and press

or the map and press NAV, Go To <point name> appears in addition to Go To
Point. The Go To function can be accessed from any list of points or graphically

5. Press the Go To soft key to begin navigation. A magenta line appears on

from the map display.

Destination

Current location

To stop navigation:

1. Press NAV.

2. Highlight Stop Navigation, and press ENTER.

Selecting a Map Item Go To Destination

A map item Go To can be used to select one of three items from the map
display—an existing waypoint, on-screen map items such as rivers, cities,
navaids, or a new map point. If you select a map item as the Go To destination,
the GPSMAP 3005C automatically uses the name of the map item, but the point
is not stored in the waypoint list. If you select a new map point (non-map item)
as the Go To destination, the GPSMAP 3005C automatically creates a waypoint
named MAP at the pointer location.

Page opens.

other points from this list, such as cities or tide stations.)

ENTER to open the Review Waypoint Page for the selected waypoint.

the map display showing the course from your current location to the
Go To point.

To Go To an existing waypoint or map item from the map display:

Navigating to a Destination

GPSMAP 3005C Owner’s Manual 19

1. Use the ROCKER to highlight the waypoint or map item you want to
navigate to on the Map Page, and press NAV.

2. On the Navigation menu, highlight Go To <waypoint name>, and press
ENTER.

BASIC OPERATION > NAVIGATING TO A DESTINATION

To Go To a new map point (non-map item) from the map display:

1. Use the ROCKER to move the pointer to the location you want to go to,
and press NAV.

2. With Go To MAP Point highlighted, press ENTER.

To stop navigation:

1. Press NAV.

2. Highlight Stop Navigation, and press ENTER.

TracBack allows you to retrace your path using the track log automatically stored
in the receiver’s memory, which eliminates the need to store waypoints along
the way. TracBack routes are created by reducing your track log into a route and
activating an inverted route. When active, a TracBack route leads you through
your stored track log points, so it is a good idea to clear the existing track log
before you start your current trip.

To clear the track log:

1. Press and hold ADJ/MENU to open the Main Menu.

2. Using the ROCKER, highlight the Tracks tab, and then highlight the
Active sub tab.

3. Press the Clear soft key. A confirmation message appears.

4. Press the OK soft key to clear the track log.

Follow Track and TracBack Navigation

A track is an electronic breadcrumb trail recording or history of your path. The
track currently being recorded is the “active” track. An active track can be stored
or saved in the unit. Both the Follow Track and TracBack options navigate in
the same way. Follow Track uses stored or “saved” tracks; TracBack uses your
current or “active” track.

20 GPSMAP 3005C Owner’s Manual

Clear soft key

Saving a Track Log

You must save a track log before you can use the Follow Track feature. You can
store up to 15 track logs from certain times and dates.

To save a track log:

1. Press and hold ADJ/MENU to open the Main Menu.

2. Use the ROCKER to highlight the Tracks tab, and then highlight the
Active sub tab.

3. Press the Save soft key, and press ENTER. The Save Back Through
window appears.

4. Highlight the time or date of the track you want to save, or highlight Entire
Log, and press ENTER. The track begins saving, and then the Saved
Track Page appears. The default name, distance, number of points (700
maximum), and a map overview are shown.

5. To change the name of the saved track, highlight the Name field and press
ENTER, make any changes, and press ENTER again.

6. To specify the color used to show the saved track line on the map and
highway, highlight the Color field and press ENTER, choose a color, and
press ENTER again.

7. To show the track on the Map and Highway Pages, highlight the check box
to the left of Show on map and highway, and press ENTER.

8. Press the OK soft key to save the track log.

Default

track name

distance

Color of

track line

Initiating a Follow Track

You must save a track before using the Follow Track option. If there are no saved
tracks, the message “There are no Saved Tracks to follow” appears.

To review and edit a track:

1. On the Saved sub tab, highlight a track and press ENTER to open the
Saved Track Page.

2. Make any changes, and then press QUIT.

BASIC OPERATION > NAVIGATING TO A DESTINATION

Total

Total

number of

points

To follow a track using the NAV key:

1. Press NAV, highlight Follow Track, and press ENTER. The Select Track
Page appears.

2. Highlight the track you want to follow, and press ENTER.

3. To invert the Follow Track (navigate it in the reverse direction), press NAV,
highlight Invert Route, and press ENTER.

To start a TracBack using the NAV key:

1. Press NAV to open the Navigation menu.

2. Highlight TracBack, and press ENTER. The TracBack Through window
appears.

3. Highlight the time, date, or Entire Log, and press ENTER.

GPSMAP 3005C Owner’s Manual 21

BASIC OPERATION > MAN OVERBOARD (MOB)

To stop TracBack navigation:

1. Press NAV.

2. Highlight Stop Navigation, and press ENTER.

Man OverBoard (MOB)

Use the Man OverBoard function to simultaneously mark and set a course to a
location for quick response to emergency situations.

TracBack Tips

When a TracBack is active, the GPSMAP 3005C takes the track log stored in
memory and divides it into segments called legs. Up to 300 temporary turns

(BEGIN, TURN 1, TURN 2,...., TURN X, END) are created to mark the most

significant features of the track log to duplicate your exact path as closely as
possible. To get the most out of the TracBack feature, remember the following
tips:

• Always clear the track log at the starting point.

• The Record Mode option on the track log setup page must be set to Fill or
Wrap.

• At least two track log points must be stored in memory to create a
TracBack route.

• If the track log Interval field is set to Time

, the route may not follow your

exact path (keep the interval set to Resolution for best performance).

• If the receiver is turned off or satellite coverage is lost during your trip,

TracBack draws a straight line between any point where coverage was lost
and where it resumed.

• If your track log’s changes in distance and direction are too complex,

300 waypoints might not mark your path accurately. The receiver then
assigns the 300 waypoints to the most significant points of your track, and
simplifies segments with fewer changes in direction.

When a MOB is initiated, a MOB waypoint with an international MOB symbol
( ) is created, and the unit is on an active navigation to that point. Use any of
the navigation pages to guide you back to the MOB point. The MOB waypoint is
stored in the waypoint list, and you can delete or edit it like any other waypoint.

To initiate the MOB function:

1. Press and hold the NAV/MOB key.

2. Press the Yes soft key to confirm and begin navigating to the MOB
location.

MOB
point

To stop navigation to the MOB location:

1. Press NAV/MOB.

2. Highlight Stop Navigation, and press ENTER.

22 GPSMAP 3005C Owner’s Manual

Creating and Using Routes

You can create and store up to 50 reversible routes (numbered 1–50), with up to
300 points each.

Creating a New Route

Using the Route tab on the Main Menu, you can create a new route in one of two
ways. You can select waypoints or map items on the map window, allowing you
to see each route point on the screen as you create the route, or you can select
waypoints from the waypoint list, allowing you to see a list of the route points as
you create the route.

To create a new

1. Press and hold ADJ/MENU to open the Main Menu.

2. Use the ROCKER to highlight the Routes tab.

3. Press the New Route soft key. The Route map window appears, and
the position marker ( ) changes to the map pointer ( ) with “ADD”
underneath it.

4. Use the ROCKER to highlight the location you want to add to your route,
and press ENTER. As you add each new waypoint to the route, the
upper-left corner of the screen shows the waypoint name. The bottom of
the screen shows you the number of available points. Repeat this step
until you finish defining all route waypoints.

If you select an area of the map that is not a feature or waypoint, a new

waypoint is created for that location.

route on the map:

Number of

available

points

To create a new route textually using the Route list:

1. Press and hold ADJ/MENU to open the Main Menu.

2. Use the ROCKER to highlight the Routes tab.

3. Press the New Route soft key to open the Route map window.

4. Press the Use List soft key to open the Route list.

5. Use the ROCKER to highlight the first field under the word “Waypoint,”
and press ENTER. The Find From Current Position Page appears.

6. Highlight Waypoints, and press ENTER. (You can also choose from other
points, such as Cities or Navaids.)

7. Select a waypoint to add to the route, and press ENTER. The Review
Waypoint Page appears.

8. Press the OK soft key to add the point to the route. As you add each new
waypoint to the route, the Route list shows the waypoint or map item
name, leg distance, course between points, and a selectable column to
show other route information.

BASIC OPERATION > CREATING AND USING ROUTES

GPSMAP 3005C Owner’s Manual 23

BASIC OPERATION > CREATING AND USING ROUTES

Route List with Information

9. Repeat steps 5–8 until all route points are entered. Press QUIT to return
to the Route Page.

Navigating a Saved Route

After you create a route, press the NAV key to start the route and use it for

The following options are available on the Navigation menu by pressing NAV
while navigating a route:

navigation. You can follow a route in the same sequence as it was originally
created, invert and follow the route from the end point back to the beginning
point, or re-evaluate it.

To navigate a saved route:

1. From any page, press NAV, and then highlight Follow Route on the
Navigation menu.

2. Press the Pick Saved soft key to select a saved route. The Select Route
window opens.

3. Use the ROCKER to highlight the route you want to navigate, and press

ENTER. The selected route is shown on the Map Page.

To stop navigating a route:

Press NAV, highlight Stop Navigation on the Navigation menu, and press

ENTER.

• Invert Route—reverses the route so you can follow it from the end point
back to the beginning.

• Re-Evaluate Route—recalculates and reactivates the current route data;
and it selects the route leg closest to your current location as the active leg
(the active leg defines the current from and to waypoints).

24 GPSMAP 3005C Owner’s Manual

BASIC OPERATION > CREATING AND USING ROUTES

Creating a Quick NAV Route

Use the Create QUICK soft key to create a quick route that you can begin
navigating imediately.

To create and navigate a QUICK NAV route:

1. Press NAV/MOB, and highlight Follow Route.

2. Press the Create QUICK soft key.

3. Use the map pointer to select a waypoint or map item, and press ENTER.

As you add each new waypoint to the route, the data window at the top of

the Map Page shows the waypoint/map item name, bearing and distance
from your location, and coordinates of the map pointer. The bottom of the
screen shows the number of available points. A route line appears on the
map to indicate each completed leg, and a dotted line appears indicating
the distance and bearing to the arrow pointer from the last route waypoint.

4. Repeat step 3 until you finish adding all route waypoints.

5. Press QUIT twice to start your QUICK NAV route.

Copying a Route

Use the Copy soft key on the Route tab to copy an existing route.

To copy a route:

1. Press and hold ADJ/MENU to open the Main Menu, and then highlight the
Routes tab.

2. Use the ROCKER to select the route you want to copy, and press the
Copy soft key. The map window for the new route opens. The copied

route uses the same route name with an additional number (starting at 1)
at the end of the route name.

Deleting a Route

Use the Route tab on the Main Menu to delete an individual route or delete all
routes.

To

delete an individual route:

1. Press and hold ADJ/MENU to open the Main Menu, and then highlight the
Routes tab.

2. Use the ROCKER to select the route you want to delete, and then press
the Delete soft key. A confirmation message appears.

3. Press the OK soft key to delete the route.

To delete all routes:

1. Press and hold ADJ/MENU to open the Main Menu, and then highlight the
Routes tab.

2. Press the Delete All soft key. A confirmation message appears.

3. Press the OK soft key to delete all routes.

Editing a Route

After you create or copy a route, use the Route tab to add, edit, or delete points
from a route or rename a route.

To change the name of a route:

1. On the Routes tab, highlight the route you want to edit, and press ENTER.
The map window opens showing the selected route.

2. Press the Rename Route soft key. The first character in the Editing
Route field is highlighted.

GPSMAP 3005C Owner’s Manual 25

BASIC OPERATION > CREATING AND USING ROUTES

Editing

Route field

3. Use the ROCKER to change the route name, and press ENTER when
finished.

To review individual route points on the map:

1. On the Routes tab, highlight the route you want to edit, and press ENTER.
The map window opens showing the selected route.

2. Highlight a point on the route, and press ENTER to open the Review
Waypoint Page.

Review Waypoint Page

3. Press the Rmv From Rt soft key to remove the point from the route, press
the Move Wpt soft key to move the waypoint, press the Delete soft key to
permanently delete the waypoint from the unit, or press the Next soft key
to highlight the next point on the route list. If the selected route point is a
user waypoint, you can edit any of the waypoint properties on the Review
Waypoint Page.

To add points to a route:

1. On the Routes tab, highlight the route you want to edit, and press ENTER.
The map window opens, showing the selected route.

2. Move the map pointer to the leg of the route where you want to add the
new point. The selected route leg turns yellow.

26 GPSMAP 3005C Owner’s Manual

Route leg to change

3. Press the Add soft key. The color of the selected route leg changes to
magenta and the word “ADD” appears below the map pointer.

4. Use the ROCKER to drag the map pointer to the location where you want
to add a route point.

5. Press ENTER to add the point to the route.

BASIC OPERATION > CREATING AND USING ROUTES

To remove a point from a route:

1. On the Routes tab, highlight the route you want to edit, and press ENTER.
The map window opens showing the selected route.

2. Select the point you want to remove from the route, and press the

Remove soft key.

To edit a route using the map window:

1. On the Routes tab, highlight the route you want to edit, and press ENTER.
The map window opens showing the selected route.

2. Use the ROCKER to highlight a point to review (waypoint or map item).

3. Press the Move soft key to move the selected point. The word “MOVE”
appears below the map pointer.

GPSMAP 3005C Owner’s Manual 27

BASIC OPERATION > CREATING AND USING ROUTES

3. Press QUIT to return to the Route List.

To change the data column (Plan Route feature):

1. On the Route list, highlight the adjustment button to the right of the
Course column header, and press ENTER. The middle title is highlighted.

Planning

features

4. Use the ROCKER to drag the map pointer to the location where you want
to move the route point, and then press ENTER to move the route point.

Planning Routes

You can enter information such as your speed, departure time, fuel flow, and
departure date so your GPSMAP 3005C can estimate information about your trip.

To plan your route:

1. Press the Plan soft key on the Route list to open the Plan Route window.

2. Enter planning data for speed and fuel flow. You can also enter the date
and time of your departure. As you enter planning information, the fields
on the Route list are automatically calculated.

NOTE: Fuel flow rates are measured in units per hour. System setting changes

for units of measure (statute, nautical, or metric) do not affect the fuel flow
measure. You should enter fuel flow rates based on available information for
your boat (operators manual, performance specifications) and note the units of
measure (gallons, liters, and so on).

28 GPSMAP 3005C Owner’s Manual

2. Press left or right on the ROCKER to select one of nine available planning
features, including ETA (Estimated Time of Arrival at point), Fuel (to point),

Leg Dist, Leg Fuel, Leg Time, Sunrise, Sunset (at point location), and
Time To (point).

The unit automatically recalculates each waypoint in the route based on

the planning feature selected.

3. Press ENTER when you are finished.

MAIN PAGES > OVERVIEW

MAIN PAGES

The GPSMAP 3005C has four main pages that are always available: Map Page, Map Split Page, Compass Page, and Highway Page. Press PAGE to cycle through the
main pages in order. If you have a GSD 20, GSD 21, or GSD 22 with transducer connected to the GPSMAP 3005C, the Sonar Page is added to the page sequence.

When the unit is turned on, the Map Page appears. As you add optional hardware to the GPSMAP 3005C or Garmin Marine Network, additional main pages, functions,
or adjustments may appear automatically. For specific information about additional main page operations, refer to the documentation that comes with the optional
hardware.

Pages

Map Split Page

Highway PageCompass PageMap Page

To go to a specific main page:

1. Press PAGE. The Pages menu shows the list of available main pages and their corresponding shortcut numbers. The active main page is highlighted.

2. Press up or down on the ROCKER to highlight a main page, and press ENTER.

GPSMAP 3005C Owner’s Manual 29

MAIN PAGES > CONFIGURING MAIN PAGES

Configuring Main Pages

You can customize each main page to fit your navigational needs, and you can
modify digital data fields and add additional secondary functions to each of the
main pages. As you add optional hardware to the GPSMAP 3005C or Garmin
Marine Network, additional function choices might appear automatically.

You can also display other functions, such as a compass, temperature log (if
inputting Garmin or NMEA sonar data), or a second map (Map Page only).
Digital data fields (Digital 1 and Digital 2) can be changed in size and type of
data that is shown in each data field. As you add or remove functions and data
fields, a preview window shows the layout.

Preview window Adjustment sliders

To add or remove functions on a main page:

1. Press and hold DATA/CNFG to open the Configuration window.

2. Using the ROCKER, highlight the function you want to add or remove, and
press ENTER. Only functions with a check mark in the check box to the
left of the name appear on the main page. The main page to which you
are adding functions always appears either on the left side (two or three
function windows) or in the upper-left (four or more function windows).

3. When finished, press QUIT to return to the main page.

Main page

Map Page with Additional Functions

CompassSecond map

Digital 1

Highway

Page

To change the size of the Digital data fields:

1. Press and hold DATA/CNFG to open the Configuration window.

Configuration Window

30 GPSMAP 3005C Owner’s Manual

2. Using the ROCKER, highlight the Digital 1 or Digital 2 adjustment slider,
and press ENTER.

3. Press up on the ROCKER to display larger text with fewer data fields;
press down on the ROCKER to display smaller text with more data fields.
A preview of the data fields appears in the preview window. As you adjust
the data field size, the configurable data fields automatically appear in the
Digital 1 and Digital 2 lists.

4. Press QUIT to exit the slider adjustment. Press QUIT again to return to the
main page.

Digital 2
with small
data fields

Digital 1

with large

data fields

To change Digital 1 or Digital 2 data fields:

1. Press and hold DATA/CNFG to open the Configuration window.

2. Highlight the data field you want to change, and press ENTER.

MAIN PAGES > CONFIGURING MAIN PAGES

3. Press up or down on the ROCKER to highlight the type of data you want
to show, and press ENTER.

4. Press QUIT to exit.

To restore the factory default configuration:

1. Press and hold DATA/CNFG to open the Configuration window.

2. Press the Defaults soft key.

GPSMAP 3005C Owner’s Manual 31

MAIN PAGES > USING FUNCTION WINDOWS

Using Function Windows

You can add additional function windows to any of the main pages. After you
configure a main page, press FCTN to cycle through the available function
windows. The active function window is highlighted with a yellow box. Each
time you press FCTN, the highlight moves in a clockwise motion (when three or
more function windows are shown).

Function Window Adjustments

Each active function window (except the Compass) has specific adjustment
(ADJ key)/soft key options and main page features. You can use options from the
adjustment menu or soft keys to access adjustments or features for the highlighted
function window. As you add optional hardware to the GPSMAP 3005C or
Garmin Marine Network, adjustment menu choices may appear automatically.
For specific instructions on adjustments and features for the highlighted function

Active function window

window, refer to the specific section (or manual) for that main page.

To show adjustment options for the active function window:

1. Press ADJ. The adjustment menu appears for the highlighted or active

1

2

3

2. Use the ROCKER to highlight an option, and press ENTER.

To cycle through function windows on a main page:

1. Press FCTN. The Functions menu appears with the next function on the
list highlighted.

2. Each time you press FCTN, the next function window is highlighted. Press
ENTER when the function window you want is highlighted. Functions that
are not available appear dimmed and cannot be selected.

function window.

Adjustment menu Active function window

32 GPSMAP 3005C Owner’s Manual

MAIN PAGES > MAP PAGE

Viewing a Main Page in Full-Screen Mode

Use the DATA key to view the main page in full-screen mode, without functions,
the status bar, or digital data fields. Press DATA again to return to the previous
view.

Map Page

The Map Page provides comprehensive electronic cartography, plotting, and
navigational data. When using optional BlueChart or MapSource maps, the Map
Page shows your boat on a digital chart, complete with geographic names, map
items, navaids, and other chart features. You can use your GPSMAP 3005C with
the optional preprogrammed BlueChart g2 data cards, to view detailed roads and
photographs. See the BlueChart g2 User’s Guide for additional information about
BlueChart g2 data.

When the map pointer is active, information appears in the upper-left corner
of the map to indicate location, any identifying text, range, and bearing to the
pointer or a selected waypoint or map item. The map range is shown in the
lower-right corner of the map.

Map Page in Full-Screen Mode

Map information

Map range

Map Page with BlueChart g2 Data

GPSMAP 3005C Owner’s Manual 33

MAIN PAGES > MAP PAGE

Use the RANGE Up and RANGE Down keys and the ROCKER to select zoom
ranges and move the map pointer. Two basic map operating modes, Position mode
and Pointer mode, determine what cartography (map data) is shown on the Map
Page. Position mode pans the cartography to keep the current position marker
within the display area, whereas Pointer mode pans the cartography to keep the
map pointer within the display area.

The GPSMAP 3005C starts in Position mode, with your location centered on the
map.

Press up, down, left, or right on the ROCKER to enter Pointer mode. In Pointer
mode:

• You can move the map pointer over the map display using the

ROCKER.

• When the map pointer reaches the edge of the display, the map scrolls

forward under the pointer. Keep in mind that the boat icon moves with the
map scrolling and may go off the screen (you might not be able to see your
current location).

• When the map pointer is stationary, a fixed coordinate location appears in

the position field. The distance and bearing change as the boat’s location
changes.

• When you change the range in Pointer mode, the map pointer is centered

Using the Map Pointer

Controlled by the ROCKER, the map pointer is an important tool that can be
used to pan to other map locations, mark and edit waypoints and routes, and
review location data of on-screen map items and waypoints.

on the screen.

• To return to Position mode, press

QUIT.

Land

Water

Map
item

Navaid

Boat icon

Geographic name

Map range

NOTE: When the map pointer reaches the edge of the map, the unit may pause

as it loads new map data.

34 GPSMAP 3005C Owner’s Manual

MAIN PAGES > MAP PAGE

Selecting Map Ranges

The map display has 28 available range scales from 20 ft to 800 mi (5 m to 1200
km). The map range is controlled by the RANGE Up and RANGE Down keys,
with the current range shown at the lower-right corner of the Map Page.

Cartography

The GPSMAP 3005C has a built-in worldwide database, with more detailed
coverage available through the use of optional BlueChart or MapSource data.
The unit shows cartography as long as there is chart information available for the
selected range.

The GPSMAP 3005C accepts preprogrammed data cards and is compatible with

Using Built-In Basemap

the latest BlueChart® g2 series marine cartography, which features integrated
mapping, 2-D or 3-D map perspective, tide and current data, improved IALA
symbols, navaids, marinas, boat ramps, roads, and more.

Using BlueChart/MapSource Data

Map coverage conforms to the following conditions:

• Cartography appears when the selected zoom range is covered by either the

Overzoom, no additional data

internal database, BlueChart, or BlueChart g2 data.

• When the selected zoom range is covered by both the internal database and

To select a map range:

Press the RANGE Up key to zoom out or the RANGE Down key to

zoom in.

NOTE: The scale value represents the distance from one end of the scale bar to

the other.

BlueChart or BlueChart g2 data, the cartography with the best resolution
appears.

• When the selected zoom range exceeds the resolution of the data in use,
overzoom cartography appears and an overzoom warning appears below
the range.

GPSMAP 3005C Owner’s Manual 35

MAIN PAGES > MAP PAGE

Map Page Options

The Map Page provides access to functions and features relating to the Map
Page (or Map function window) using the ADJ key and soft key options. The
available options are: Measure (Distance), Hide (Show) Detail, and Setup. As
you add optional hardware to your GPSMAP 3005C or Garmin Marine Network,
additional adjustment menu choices may appear automatically

You can customize the Map Page to show other functions and different sizes or
types of Digital Data fields.

Measuring Distance

Use the Measure (Distance) option to you to measure the distance and bearing
between two points.

To measure the

1. Press the Measure soft key. An on-screen pointer appears on the map
display at your present location with a blue thumbtack symbol to show the
“From” reference point.

2. Using the ROCKER, move the pointer to the reference point (the point
from which you want to measure), and press ENTER. The blue thumbtack
symbol now appears at that point.

3. Move the pointer to the point that you want to measure to. The bearing
and distance from the reference point and pointer coordinates appear in
the upper-left corner of the Map Page.

4. Press QUIT to finish.

36 GPSMAP 3005C Owner’s Manual

distance and bearing between two points:

Hiding and Showing Map Details

Use the Hide Detail (Show Detail) soft key to toggle between showing or hiding
Spot Soundings and Map Outlines for easier viewing.

NOTE: This setting only affects the currently selected map. If you have a

second map function shown, you can set one map to show detail and one map
to hide detail.

Measuring Distance

MAIN PAGES > MAP PAGE

To hide (show) map details:

Press the Show Detail soft key to show map details; press the Hide

Detail soft key to hide map details.

Spot soundings

(BlueChart data)

Map with Detail Shown

Changing Map Setup Features

You can configure your map display preferences, including map detail, map
orientation, automatic zoom, and various map items and points. When you select
Map Setup, the Main Menu appears with the Map tab selected. The setup options
are arranged in a horizontal, easy-to-use sub tab format, making it easier to
organize and use the various settings. Changes made from the Map Setup option
affect all maps.

To change a Setup feature:

1. Press the Map Setup soft key. The Main Menu appears with the Map tab
highlighted.

2. Press left or right on the ROCKER to highlight a sub tab, press up or down
to highlight the setting you want to change, and press ENTER.

3. Press up or down on the ROCKER to select a different setting, and press

ENTER.

Map with Detail Hidden

GPSMAP 3005C Owner’s Manual 37

MAIN PAGES > MAP SPLIT PAGE AND COMPASS PAGE

Map Split Page

Use the Map Split Page to show two different views of the Map Page.

Compass Page

The GPSMAP 3005C features two different navigation pages: Compass and
Highway. Whenever a NAV Go To, Follow Track, TracBack, or Follow Route are
activated, the Compass Page guides you to your destination with digital readouts
and a compass display, which includes a Bearing Pointer.

Direction of travel (red line)

Compass ring

Data fields

Bearing pointer

38 GPSMAP 3005C Owner’s Manual

MAIN PAGES > HIGHWAY PAGE

For a the compass to work, the GPS has to be moving. When you are moving,
the orange Bearing Pointer points toward your destination, while the Compass
Ring reflects the direction you are traveling by a red vertical line at the top of
the Compass Ring. When you are headed directly toward your destination, the
Bearing Pointer points toward the top of the screen, aligned with the red vertical
line shown at the top of the Compass Ring. If you are not heading toward
your destination, the Bearing Pointer turns, continuing to point toward your
destination. To head toward your destination, turn until the Bearing Pointer is

Highway Page

The Highway Page provides 3-D graphic steering guidance to a destination
waypoint, placing greater emphasis on the straight-line course, and the distance
and direction you are off course. As you head toward your destination, the middle
of the screen guides you to a waypoint on a highway. Your present location is at
the bottom-center of the Highway Page. Three-dimensional cartography provides
situational awareness while navigating. The line down the middle of the highway
represents your course.

aligned with the red vertical line in the Compass Ring.

Along the right side of the screen are the default data fields; the top field is speed.
Also shown are the distance to your waypoint (DIST NEXT) and estimated time
en route (ETE NEXT). The distance and en route time decrease as you near your
destination.

The Bearing Pointer or Compass Ring may point in various directions when

nav point

you are stationary or at very low speeds. When you start moving, the pointer is
correct.

track line

You can customize the Compass Page to show other functions and different sizes
or types of Digital Data fields. See
more information.

“Configuring Main Pages” on page 30 for

waypoint

Current
location

Data fields

Current

Desired

Route

As you head toward your destination, the highway perspective moves to indicate
your progress to the waypoint and which direction you should steer to stay
on course. If you are navigating a route, the Highway Page shows each route
waypoint in sequence connected by a magenta “road” with a line down the

GPSMAP 3005C Owner’s Manual 39

MAIN PAGES > HIGHWAY PAGE

middle, which represents your course. To stay on course, steer toward the center
of the highway. You can also view Routes details, nearby waypoints not in the
active route, Track Log points, and Saved Tracks.

Changing the Highway Perspective Range

You can also zoom the highway perspective range in or out to display a larger or
smaller view of the highway.

To change the highway perspective range:

Press the RANGE Up key to zoom out, or press the RANGE Down key to

zoom in.

Highway Page Options

The Highway Page provides access to functions and features relating to the
Highway Page (or Highway function window) using the ADJ key and soft key
options.

The available ADJ soft key options are Route Details, Edit Active Route, Show
(Hide) Carto, and Setup. As you add optional hardware to the GPSMAP 3005C
or Garmin Marine Network, adjustment menu choices may appear automatically.
You can also customize the Highway Page to show other functions and different
sizes or types of digital data fields.

• Active Route Details (Route Details)

course, and other useful information for each waypoint of the active route.

• Edit Active Route (Edit Route)

Active Route from either a list of the route points or on a map.

• Hide (Show) Cartography—toggles between hiding and showing map
details. When cartography is hidden, route and course information is not
shown.

—shows details such as distance,

—allows you to review and modify the

Showing or Hiding Cartography

When using optional preprogrammed BlueChart g2 data cards, you can view the
cartography on the Highway Page.

• Setup

—allows you to select what waypoints and tracks are shown on the
Highway Page. Use the ROCKER and ENTER keys to select or clear
options. The following options are available:

• Active Route Waypoints

• User Waypoints

• Track Log

• Saved Tracks

—shows only nearby waypoints.

—shows the current active track log.

—shows any saved track logs.

—shows all active route waypoints.

To view cartography on the Highway Page:

Press the Show Carto soft key to show the map cartography on the

Highway Page. Press Hide Carto to return to the highway view.

Highway Page with Cartography Shown

40 GPSMAP 3005C Owner’s Manual

MAIN MENU > GPS TAB

MAIN MENU

The Main Menu provides access to various waypoint, system, navigation and
interface management, and setup menus in an easy-to-use tab format. The Main
Menu is accessible from any page by pressing ADJ/MENU. As you add optional
hardware to the GPSMAP 3005C or Garmin Marine Network, additional Main

GPS Tab

The GPS tab provides a visual reference of satellite acquisition, receiver status,
and accuracy. The sky view and signal strength bars give you an indication
of what satellites are visible to the receiver and whether or not they are being
tracked.

Menu tabs or sub tabs may appear automatically. For specific instructions on
additional adjustments and features, refer to the specific section (or manual) for
that hardware device.

Sub tabs

Main Menu

tabs

Main Menu

AccuracySignal strength barsReceiver status Sky view

To select a tab from the Main Menu:

1. Press and hold ADJ/MENU to open the Main Menu.

2. Press up or down on the ROCKER to highlight the tab you want to view.
(The highlight wraps around when you reach the top or bottom of the
list.) The information for the highlighted tab automatically appears to the
right. If you want to highlight any of the sub tabs, press left or right on the
ROCKER, and then press up or down to select individual fields.

GPSMAP 3005C Owner’s Manual 41

MAIN MENU > TIDE TAB

Tide Tab

Use the Tide tab to view tide and current information. The Tide tab contains two
sub tabs: Tide and Current.

Tide Sub Tab

The Tide sub tab contains a graphical chart that shows Tide Station information
in a 24-hour span starting at midnight. You can choose from different dates and
more than 3,000 Tide Stations around the U.S.A. coastline, Alaska, Hawaii,
western Canada, and several of the Caribbean islands. The top of the Tide sub tab
shows the Tide Station and the date. The bottom of the Tide sub tab shows the
distance and bearing from your location.

The bottom of the Tide chart shows a 24-hour block of local time for your
location. Daylight (yellow bar) and nighttime (blue bar) at the Tide Station are
shown across the time scale, with the time progressing from left to right (sunrise
and sunset information might not be available for some Tide Stations). The solid,

in 1-hour increments. A solid, vertical line (with the local time at the top) indicates
the tide height corresponding to the time shown in the local time box.

Current

tide

height

Min. level

Max. level

Event times

High tide

curve

Day

Time bar

Local time

Low tide curve

Current tide

height bar

Night

The Tide curve is shown as a shaded area, where higher tides are taller (blue) and
lower tides are shorter (red). The solid, horizontal line indicates the tide height.
The figure to the left of the line shows the present tide level. The Mean Lower
Low Water (MLLW) appears as a solid, horizontal line near the bottom of the chart
(this line appears only if the tide height range is zero or below). The numbers on
the top and bottom of the left side indicate the maximum and minimum levels. The
four data fields below the chart indicate event times and levels at which the tide
changes, starting in the upper-left field, going downward, then to the upper-right,
and down again. When comparing with other tide tables, verify that the depth units
are the same for both sources. The bottom of the chart shows the amount of time
(in hours and minutes) until the next low tide and high tide.

light vertical lines are in 4-hour increments, and the light, dotted vertical lines are

42 GPSMAP 3005C Owner’s Manual

MAIN MENU > TIDE TAB

To select the Tide Station nearest to your location:

1. Highlight the For field, and press ENTER to open the Find Tides Page.

2. Highlight Current Position, and press ENTER to open the Find Near
Current Position Page.

3. Select a Tide Station from the list, and press ENTER. As you move the
highlight over each Tide Station in the list, the station is highlighted on
the map window. The distance and bearing from your location to the
highlighted Tide Station are shown at the bottom of the list.

Tide Stations Near Your Location

3. Press up or down on the
location, and press ENTER. The Find Near Other Position Page shows a
list of Tide Stations near the selected map location.

4. Select a Tide Station, and press ENTER. If the “None Found” message
appears, repeat steps 1–3 until you find a Tide Station.

ROCKER to move the map pointer to a map

Viewing Tide Information

You can change the date to see tide charts for other days, or move the time bar in
approximately five minute increments to show tide heights at various times.

To change the date of the tide chart:

1. Using the ROCKER, highlight the On field, and press ENTER.

2. Enter a date, and press ENTER. The tide chart is updated to show tide
information for the selected date.

3. Press the Current Date soft key to return.

To view tide heights at various times on the tide chart:

1. Highlight the tide chart.

2. Press left or right on the ROCKER to change the time and day. The day
changes as you move past the edge of the tide chart.

If you are not within range of a Tide Station, the message “None Found” appears.
Use the Map Position option to select a location closer to a Tide Station.

To select a Tide Station from a map location:

1. Highlight the For field, and press ENTER to open the Find Tides Page.

2. Highlight Map Position, and press ENTER to open the Find Near Current
Position Page.

GPSMAP 3005C Owner’s Manual 43

MAIN MENU > TIDE TAB

Current Sub Tab

The Current sub tab shows information for currents in a 24-hour span, starting
at midnight. You can choose from different dates and more than 3,000 Current
Stations around the U.S.A. coastline, Alaska, Hawaii, western Canada, and
several of the Caribbean islands. The top of the Current sub tab shows the Current
Station and the date. The bottom of the tab shows the distance and bearing from
your location.

The bottom of each chart shows a 24-hour block of local time for your location.
Day (yellow bar) and night (blue bar) at the Current Station appear across the
time scale, with the time progressing from left to right (sunrise and sunset
information may not be available for some stations). The solid, light vertical
lines are in 4-hour increments, and the light, dotted vertical lines are in 1-hour
increments. A solid, vertical line (with the local time at the top) indicates the
strength of the current that corresponds to the time shown in the local time box.

To select the Current Station nearest to your location:

1. Highlight the For field, and press ENTER to open the Find Currents Page.

2. Highlight Current Position, and press ENTER to open the Find Near

The Current sub tab contains two charts, one for speed and one for direction.

Current Position Page.

The top chart is the speed chart, which shows the speed of a given current at any
point during the day. The shaded area is blue (Flood Current) when the current is
heading toward shore; the shaded area is red (Ebb Current) when the current is
heading away from shore.

The bottom chart is the direction chart, which shows the direction of the current
at any given point during the day (based on the north reference, not true north.)

44 GPSMAP 3005C Owner’s Manual

3. Select a Current Station from the list, and press ENTER. As you move
the highlight over each Current Station in the list, the station is highlighted
on the map window. The distance and bearing from your location to the
highlighted station are shown at the bottom of the list.

MAIN MENU > CELESTIAL TAB

To select a Current Station from a map location:

1. Highlight the For field, and press ENTER to open the Find Currents Page.

2. Highlight Map Position, and press ENTER to open the Find Near Current
Position Page.

3. Press up or down on the ROCKER to move the map pointer to a map
location, and press ENTER. The Find Near Other Position Page shows a
list of Current Stations near the selected map location.

4. Select a Current Station, and press ENTER. If the “None Found” message
appears, repeat steps 1–3 until you find a Current Station.

Celestial Tab

The Celestial tab shows celestial data for sun and moon rise and set, moon phase,
and the approximate sky view location of the sun and moon. The moon phase
shows the current visible portion of the moon as a light color. You can show this
data for your current location, a location from the map, or a Find item location.
Also, you can select a different date and time, or use the current date and time.
The timetables shown are based on your current time zone.

Viewing a Current Report

Press the Show Report soft key on the Current sub tab to view a detailed
report of all times and values for all the minimum and maximum current flows
throughout the day, including Flood, Slack, and Max Ebb times and strengths.

Sky view window

Location

Date/Time

Sun/Moon

event times

Sun

location

Overhead (90°)

20°45°

Horizon (0°)

Moon

phase

The Celestial tab contains the following soft keys:

• North Up/Track Up—sets the sky view to a north heading or to the
current track heading.

• Current Date—press to show Celestial information for today’s date.

GPSMAP 3005C Owner’s Manual 45

MAIN MENU > TRIP TAB

To view celestial information for a different location:

1. On the Celestial tab, highlight the At field, and press ENTER. The Find
Celestial Information Page appears.

2. Make a selection and press ENTER repeatedly until the information for
that location appears on the Celestial tab.

To change the time or date:

1. On the Celestial tab, use the ROCKER to highlight the Days or Hours
button, and press ENTER. Press up or down on the ROCKER to change
the days or hours. Press QUIT to exit.
OR
Highlight the On field, and press ENTER.

2. Enter a new date or time, and press ENTER.

3. To return to the current date and time, press the Current Date soft key.

Trip Tab

The Trip tab shows data for Trip Odometer, Moving Average speed, Total Average
speed, Maximum Speed, Stopped Time, Moving Time, Total Time, and Odometer.

Soft

keys

Trip Tab

The Trip tab contains the following soft keys:

• Clear Trip—clears all trip data.

• Clear Max Spd—resets the value in the Maximum Speed field to 0.00.

• Clear Odometer—resets the value in the Odometer field to 0.00.

• Clear All—resets the values in all fields.

46 GPSMAP 3005C Owner’s Manual

MAIN MENU > WEATHER TAB AND POINTS TAB

Weather Tab

The Weather tab shows current weather conditions, the forecast, sea surface
information, and a forecast map. The Weather tab also contains a Setup sub tab
that you can use to customize preset weather options.

The Weather tab appears only if you have the Weather

check box selected on the

Points Tab

The Points tab contains two sub tabs, User and Proximity, which allow you to
manage a large number of waypoints quickly and efficiently. The sub tabs also
provide a continuously updated proximity waypoint alarms that can be used to
define items, such as submerged hazards or shallow waters.

System tab. See the “XM WX Weather” section beginning on page 81 for more
information.

NOTE: You must have a GDL30/GDL 30A Marine Weather/Audio Satellite

Receiver installed and connected to your GPSMAP 3005C, and a subscription
to XM WX Satellite Weather to use the XM Weather features.

User Sub Tab

The User sub tab on the Points tab displays a master list of all waypoints currently
stored in memory. From the User list, you can review, edit, rename, or delete
individual waypoints, or delete all user waypoints. The total number of stored
and available waypoints appears at the bottom of the User sub tab, with the stored
waypoints arranged in alphanumeric order.

Number of waypoints remaining Number of used waypoints

GPSMAP 3005C Owner’s Manual 47

MAIN MENU > ROUTES TAB

Proximity Sub Tab

Use the Proximity sub tab on the Points tab to define an alarm circle around a
stored waypoint. The alarm circle can help you avoid reefs, rocks, or restricted
waters. You can add proximity alarms to up to 10 waypoints, with a maximum
alarm radius of 99.99 nautical or statute miles or kilometers.

Routes Tab

The Routes tab contains a list of available routes. See “Creating and Using

Routes” beginning on page 23 for more information about creating routes.

48 GPSMAP 3005C Owner’s Manual

MAIN MENU > TRACKS TAB

Tracks Tab

Use the Tracks tab to specify whether or not to record a track log, define how it
is recorded, or save track log data for future use. The Tracks tab also provides an
indicator of the memory used for the active track log and allows you to clear the
track memory. The Track tab is divided in two sub tabs: Active and Saved.

For more information setting up track options and saved tracks, see pages 20-21.

The following settings are available:

• Record Mode

•

•

• Wrap

• Color—allows you to specify a color used to show the active track log on

• Interval—defines the frequency at which the track plot is recorded. Three

•

• Time—records track plot based on a user-defined time interval.

•

Active Sub Tab

The Active sub tab shows the amount of track memory used and current settings
for the active log (the log currently being recorded). The active log stores up to
approximately 10,000 track log points, based on the criteria specified in the Track
settings.

• Value—defines the distance or time used to record the track log.

The following soft keys are available:

• Save—saves the current active track log.

• Clear—clears the active track log currently stored in memory.

—allows you to select one of three track recording options:

Off—No track log is recorded. If you select Off, you cannot use the
TracBack feature.

Fill—a track log is recorded until the track memory is full.

—a track log is continuously recorded, wrapping through the

available memory (replacing the oldest track data with new data).

the Map and Highway Pages.

interval settings are available:

Distance—records the track based on a user-defined distance between

points.

Resolution—records the track plot based on a user-defined variance
from your course over ground or changes in water depth/temp
(if equipped). The Resolution option is the default setting and is
recommended for the most efficient use of memory and TracBack
performance. The distance value (entered in the value field) is the
maximum error allowed from the true course before recording a track
point.

GPSMAP 3005C Owner’s Manual 49

MAIN MENU > DSC (DIGITAL SELECTIVE CALLING) TAB

Saved Sub Tab

The Saved sub tab shows a list of all saved track logs and allows TracBack
activation and a map display of saved track logs. You can save up to 15 track logs
in memory with up to 700 track log points in each saved log.

On the Saved sub tab, the following soft keys are available:

• Review Map—opens the Saved Track window so you can review the

selected track.

• Delete—deletes the highlighted saved track log from memory.

• Delete All—deletes all saved track logs from memory.

DSC (Digital Selective Calling) Tab

Use the DSC tab to control and set up DSC features on the GPSMAP 3005C
unit. DSC uses marine VHF radio and GPS technologies to transmit and receive
location information. DSC is used by mariners for two major operations—distress
calls and position reporting.

For more information about DSC and Maritime Mobile Service Identity (MMSI)
numbers, see pages 86 in the “Appendix.”

When the GPSMAP 3005C is connected to a VHF radio with DSC support, the
GPSMAP 3005C unit shows a call list, log, and a directory that stores incoming
information received from another user’s DSC-capable VHF/GPS combination.
Basic wiring is required for the Garmin unit and VHF radio to send and receive
NMEA data from each other. See the GPSMAP 3005C & GPS 17 Installation
Instructions for more information.

50 GPSMAP 3005C Owner’s Manual

MAIN MENU > DSC (DIGITAL SELECTIVE CALLING) TAB

Understanding DSC Distress Calls

With your GPSMAP 3005C properly connected to a VHF radio with DSC output,
you can receive any DSC distress call within range. An alert message appears,
and an alarm sounds (if enabled) when a distress call is received. The alarm

To review a call or log entry:

1. From the DSC tab, highlight the Call List or Log sub tab.

2. Press up or down on the ROCKER to highlight the call you want to review.

3. Press ENTER.

sounds only for a distress call; position reports do not sound an alarm. Distress
calls are broadcasted to all DSC users in radio range and appear with a blue and
white checkered icon on the DSC tab’s Call List and Log sub tabs.

Review DSC Waypoint

The Review DSC Waypoint Page operates similarly to the Distress Page and
Position Report Page. From this page you can also delete the displayed call. On

You can enter a caller’s name, if it is known. The caller’s name replaces the
MMSI number as a reference, when entered.

the DSC Review Waypoint Page, press the Delete soft key to delete the entry, or
press the Create Wpt soft key to create a waypoint.

Understanding Position Reports

The position report operates similarly to the distress call. This type of contact is
like a phone call; no emergency alarms are set off, and the call is specific to the
receiver. Position reports are not broadcasted to all DSC users and appear with a
gold boat icon.

Call List Sub Tab

The Call List sub tab shows the 100 most recent calls, even if the unit is left
unattended. You can select any entry from the Call List to show an Entry Review.

Log Sub Tab

When DSC calls are received, they are automatically stored in the log, with
the latest call at the top. The unit can store up to 100 calls; after 100 calls are
received, the oldest is removed when a new call is received.

The Call List and Log sub tabs both show the call type, date/time, position, and
MMSI/Name. Pressing the Sort By (Call) Type, Sort By Time, Sort By Name,
Delete (only after highlighting a particular call), and Delete All soft keys allows
you to sort and delete calls.

Review DSC Waypoint

GPSMAP 3005C Owner’s Manual 51

MAIN MENU > DSC (DIGITAL SELECTIVE CALLING) TAB

DSC Directory

The DSC Directory acts like a phone book and can save up to 100 contacts. The
directory lists all contacts by name and MMSI number. Press ADJ from this page
to delete a highlighted entry or delete all entries.

To add a new

1. Press the New Item soft key. The Directory Item Review window allows
you to enter information of a known contact.

2. Highlight the MMSI, Name, or Comment field, and press ENTER.

3. Press up or down on the ROCKER to enter information, and press ENTER.

4. Press the OK soft key to save the entry.

directory item:

Setting Up DSC

Use the DSC Setup sub tab to turn DSC on and off. If you have more than one
chartplotter and you only want DSC to show on one chartplotter, turn off DSC on
all units but one.

You can use the Setup sub tab to simulate distress calls or position reports on this
page while the unit is in Simulator Mode (page 8). Press either the Sim Dstrs
Call or Sim Posn Rpt soft key to simulate a Distress Call or a Position Report.
This is helpful practice before connecting to the real system. The Distress Call
simulator also helps to determine whether alarms are working properly.

After creating a New Directory Item entry, the name created is attached to that
particular MMSI number. If you return to the log, the new name appears under
the corresponding MMSI number.

Another way to enter a name is from the Entry Review Page or the DSC Distress

DSC Setup (Simulator Mode Shown)

Call or DSC Position Report pages. The Name field is only available in the GPS.
Names cannot be sent like the MMSI numbers to other DSC users.

Using the NAV Key

If you receive a distress call or position report, you can quickly navigate to the
caller using the NAV key. When the call is logged, press NAV, and select Go To
<MMSI number> or Go To <Name>.

52 GPSMAP 3005C Owner’s Manual

MAIN MENU > CARD TAB

Card Tab

Use the Card tab to transfer waypoints, routes, and tracks to and from a data card.
When data is saved to a data card, it can be exchanged with other compatible
units and Garmin’s MapSource software program.

To transfer data to or from a data card:

1. Insert the data card. If there is already user data on the card, highlight
Manage User Card, and press ENTER. The Main Menu appears with the

Card tab selected.

2. Select the check box next to each type of item you want to transfer (user
waypoints, proximity waypoints, routes, or tracks).

3. Press the To Card soft key to save the selected items to the data card.

4. If transferring data from the card to the GPSMAP 3005C, press the Merge

From Card soft key to combine the selected items with existing GPS data.
OR

Highlight Replace From Card, and press ENTER to overwrite all selected
items on your GPS.

5. A “Transfer Complete” message appears after the data is transferred.
Press QUIT.

GPSMAP 3005C Owner’s Manual 53

MAIN MENU > MESSAGES TAB

Messages Tab

The Messages tab shows a list of messages generated by the GPSMAP 3005C.
Use the ROCKER to scroll through the messages. The date and time when each
message occurred is shown at the bottom of the tab.

Viewing Detailed Message Information

You can view detailed information about the message, such as date, time,
position, speed, course, and heading.

To view detailed information:

Highlight a message, and press ENTER. A window opens, showing

detailed information for the selected message.

54 GPSMAP 3005C Owner’s Manual

MAIN MENU > ALARMS TAB

Alarms Tab

Use the Alarms tab to define alarm settings. The Alarms tab is divided into three
sub tabs: System, Nav, and Sonar.

System Alarms

Use the System sub tab to set alarms for the system clock, batteries, and GPS
accuracy.

Alarm messages appear in red across the status bar or change the appearance of
a data field if that field shows alarm-related data (for example, depth or voltage).
Press QUIT to acknowledge an alarm message. The status bar and data field
remain red while the alarm condition persists.

The System sub tab contains the following alarms:

• Clock—provides an alarm for the system clock. Enter a time in the time

• Battery—sets an alarm to sound when the battery reaches a user-

• GPS Accuracy—sets an alarm to sound when the GPS location accuracy

To set an alarm:

1. Use the ROCKER to highlight the System, Nav, or Sonar sub tab.

2. Highlight the field next to the alarm you want to set, and press ENTER.

3. Change the mode to the setting you want, and press ENTER.

4. Repeat steps 1–3 to set additional alarms, and then press ENTER when
finished.

field and turn the alarm on and off from the control field menu. Remember
to enter alarm times in the same time format (UTC or local) you are using
for your system. The unit must be on for the clock alarm to work.

determined low voltage.

falls outside the user-determined value.

GPSMAP 3005C Owner’s Manual 55

MAIN MENU > ALARMS TAB

Nav (Navigation) Alarms

Use the Nav sub tab to set navigational alarms, including anchor drag, arrival, and
off course.

• Anchor Drag—sets an alarm to sound when a specified drift distance is
exceeded. Enter a value in the distance field, and use the control field to
turn the alarm on and off.

• Arrival—sets an alarm to sound when you are a specified distance or time
away from a destination waypoint. Enter a distance, radius, or time for
sounding the alarm, and use the control field to set the alarm to Off, Dist
(distance), or Time.

• Off Course—sets an alarm to sound when you are off course by a specific
distance. Enter a distance in the distance field, and use the control field to

Sonar Alarms*

Use the Sonar sub tab to set sonar alarms, including shallow or deep water,
water temperature, and fish.

• Shallow Water/Deep Water—sets an alarm to sound when you enter
an area of specified depth that is too shallow or too deep. You must be
receiving sonar data for this function to work.

• Water Temperature—sets an alarm to sound when the transducer reports
a temperature either above, below, inside, or outside the specified values.

• Fish—sets an alarm to sound when the unit detects a fish of the specified
symbols.

*You must be receiving NMEA sonar data or using a GSD 20, GSD 21 or GSD 22 for the
sonar alarms to function.

turn the alarm on and off.

56 GPSMAP 3005C Owner’s Manual

MAIN MENU > SYSTEM TAB

System Tab

The System tab consists of five sub tabs: General, Units, Time, Comm, and
Update.

The following soft keys are available:

General Sub Tab

Use the General sub tab to control system settings for system mode, speed filter,
automatic backlight, beeper, language, simulator controls, restore factory default
settings, and to view the software version.

The following settings and options are available:

• System Mode—select Normal (normal navigation) or Simulator (for
practice only). For more information about Simulator Mode, see “Using

Simulator Mode” on page 7.

• Speed Filter—averages speed readings. Select Off, Auto (automatically
controls filtering), or On (allows you to enter a value from 1 to 255
seconds).

• Automatic Backlight—automatically adjusts the display brightness to a
specified level at sunrise and sunset. You can specify offset minutes for
before sunrise and after sunset.

• Beeper—controls the audible beep. Select Off, Alarms Only (sounds for
alarms/messages), or Key and Alarm (sounds for key presses and alarms/
messages).

• Language—sets the language for the unit’s on-screen text.

• Services—after a new device is detected on the network, clearing the

Auto-Detect Services check box speeds up the startup sequence. If the
Auto-Detect Services check box is not selected and new hardware is

added, you must select the corresponding service check box to enable the
new hardware device.

• Factory Dflts—restores all settings to Garmin’s original setup values for
all devices on the network.

• System Info—shows the unit’s software, basemap version, and electronic
serial number.

• Update Notes—shows software notes for the current software version.

To adjust the automatic backlight settings:

1. Highlight the Automatic Backlight field, and press ENTER.

2. Using the ROCKER, highlight On, and press ENTER.

3. Highlight the Setup button, and press ENTER to open the Adjust Backlight

window.

4. To adjust the backlight levels For Day and For Night, highlight the

corresponding slider, and press ENTER.

GPSMAP 3005C Owner’s Manual 57

MAIN MENU > SYSTEM TAB

Sliders

5. Press up or down on the ROCKER to increase or decrease the backlight
level, and press ENTER.

6. To adjust the offset minutes, select the minutes field, and press ENTER.

7. Enter the offset minutes for Before Sunrise or After Sunset. If zero, the
unit automatically changes to the specified level at sunrise/sunset. Press

QUIT to exit.

The following settings are available:

Units Sub Tab

Use the Units sub tab to define settings for Position Format, Depth, Map Datum,
Temperature, Distance, Speed, and Elevation, Pressure, and Heading.

WARNING: The Units sub tab settings affect how navigation information

appears on the GPSMAP 3005C. If you are using a map or chart with your
GPS, make sure the settings on the Units sub tab match that of the map or
chart. This information should be shown somewhere on the map or chart. If
not, contact the map or chart maker to determine what position format, datum,
heading, and units of measure are used for the map or chart.

• Position Format—used to change the coordinate system in which a given
location reading appears. Only change the position format if you are using
a map or chart that specifies a different position format or you want to use a
format you are familiar with. The default format is latitude and longitude in
degrees, minutes, and thousandths of a minute (hddd°mm.mmm’).

• Depth—select the units of measure for depth in Feet (ft), Fathoms (fa),
or Meters (m). You must be receiving NMEA Sonar depth data or using a
Garmin sonar module for the depth to appear.

58 GPSMAP 3005C Owner’s Manual

MAIN MENU > SYSTEM TAB

• Map Datum—manually select the datum reference used to determine

your present location and provides magnetic north heading references
a given location. The default setting is WGS 84. The unit automatically
selects the best datum depending on your chosen position format. Datums
are used to describe geographic locations for surveying, mapping, and
navigation and are not actual maps built in the unit. Although more than
100 datums are available, you should change the datum only if you are
using a map or chart that specifies a different datum.

WARNING: Selecting the wrong map datum can result in substantial

position errors. When in doubt, use the default WGS 84 datum for best overall
performance.

To enter a user-defined magnetic variation:

1. With the Heading field set to User Mag Var, highlight the heading

• Temperature—set the units of measure for temperature in Fahrenheit (°F)
or Celsius (°C). You must be receiving NMEA Sonar temperature data or
using a Garmin Sonar Module for the Temperature to appear.

• Distance, Speed, and Elevation—set the units of measure for distance,
speed and elevation readouts in Nautical (nm, kt, ft), Nautical (nm, kt, m),

2. Enter the magnetic variation at your current location, and press ENTER.

Time Sub Tab

Use the Time sub tab to adjust the time format, enter a time zone, and adjust for
daylight saving time to show the correct local time.

Statute (mi, mh, ft), or Metric (km, kh, m) terms.

• Pressure—set the units of measure you want to use for weather readouts
in Inches Mercury (in), Millibars (mb), or Hectopascals (hPa). You must be
using a Garmin weather product for this data to appear.

• Heading—set the reference used in calculating heading information. You
can select Auto Mag Var, True, Grid, and User Mag Var. Auto Mag
Var provides magnetic north heading references that are automatically
determined from your present location. True provides headings based
on a true north reference. Grid provides headings based on a grid north
reference. User Mag Var allows you to specify the magnetic variation at

based on the variation you enter.

WARNING: If you select User Mag Var, you must periodically update the

magnetic variation as your location changes. When using this setting, the
GPSMAP 3005C unit does not automatically calculate and update the magnetic
variation at your present location. Failure to update this setting can result in
substantial differences between the information displayed on your unit and
external references, such as a magnetic compass.

reference field (immediately to the right), and press ENTER.

GPSMAP 3005C Owner’s Manual 59

MAIN MENU > SYSTEM TAB

The following options are available:

• Time Format—select 12 Hour, 24 Hour (military), or UTC (also called

Port 1

• Garmin Data Transfer—the proprietary format used to upload or

Greenwich Time) time format.

• Time Zone—select your time zone to show correct local time or enter a
UTC Offset (how many hours you are ahead or behind the time line).

• NMEA In/NMEA Out—supports the input or output of standard NMEA

• Daylight Saving Time—select Auto, On, or Off to adjust for daylight
saving time.

Comm (Communications) Sub Tab

• NMEA High Speed—supports the input or output of standard 0183 data
The Comm sub tab controls the input/output format used when connecting your
GPSMAP 3005C to external NMEA devices or a personal computer. The unit

• None

supports two input/output ports.

Port 2

NOTE: See the GPSMAP 3005C & GPS17 Installation Instructions for more

information on wiring and NMEA information.

• NMEA In/NMEA Out—supports the input or output of standard NMEA

• None

You can also adjust the NMEA output to enable or disable certain sentences and
adjust the number of Lat/Lon output precision digits. You must have one of the
ports set to NMEA In/NMEA Out to use this option. Settings affect both Port 1
and Port 2 NMEA outputs.

download MapSource data, exchange waypoint, route, track, and proximity
data with a computer or another Garmin unit. When you select

Garmin

Data Transfer, you can choose from nine Garmin Data Transfer Modes.

0183 data, DSC, and sonar NMEA input support for the DPT, MTW, and
VHW sentences. You can also adjust the NMEA output.

for most AIS receivers.

—provides no interfacing capabilities.

0183 data, DSC, and sonar NMEA input support for the DPT, MTW, and
VHW sentences. You can also adjust the NMEA output.

—provides no interfacing capabilities.

Network

You can select the method to upload or download user data on networked MFDs.

• Merge User Data—merges the user data for all MFDs on each MFD.

• Clone User Data—the user data from the MFD initiating the clone

replaces the user data on all other MFDs attached to the network.

60 GPSMAP 3005C Owner’s Manual

MAIN MENU > SYSTEM TAB

NMEA Interface

If you are going to use the GPSMAP 3005C with a NMEA device (such as a
radio or autopilot), the unit needs to be set to input/output NMEA data. See the
GPSMAP 3005C & GPS 17 Installation Instructions for information on wiring
and NMEA data.

To activate the NMEA data:

1. Highlight the Port 1 or Port 2 field, and press ENTER.

2. Highlight NMEA In/NMEA Out, and press ENTER.

When transferring data between two Garmin units, always set one to Host and
use the other unit to send or request the data.

Use the Advanced NMEA Setup Page to turn the GPS status (GSA, GSV),
Waypoint/Route (WPL, RTE), and the Garmin proprietary sentences on or off.
Check any other equipment’s owners manual to see what sentences are required
to be enabled for functionality.

Lat/Lon Minutes Precision

allows you to adjust the number of digits to the right
of the decimal point for transmission of NMEA Output, either 2, 3, or 4 digits.
Use the Waypoint ID setting to output the waypoint identifiers as names or
numbers.

Advanced NMEA Setup Page

Advanced NMEA Output Setup

The GPSMAP 3005C NMEA data transmission can be customized to change the
precision of the Lat/Lon minutes, set up the waypoint IDs, and keep the output
rate at two seconds. If the unit is set up to output all of the available NMEA
sentences, the output rate may exceed two seconds.

GPSMAP 3005C Owner’s Manual 61

To change advanced NMEA settings:

1. Press the NMEA Setup soft key to open the Advanced NMEA Setup
Page.

2. To change, enable, or disable NMEA output sentences, highlight the
sentence, and press ENTER to select or clear the check box. Only
selected sentences are output.

MAIN MENU > NETWORK TAB

Update Sub Tab

The Update sub tab shows the status of any software you are uploading to your
unit.

Network Tab

The Network tab shows all devices connected to your GPSMAP 3005C and
the Garmin Marine Network, and the status of each. You can assign a name or
identifier to each device on your network.

• Update—updates software on your unit.

• Prepare Card

Network. When selected, information about your network installation is

—updates software for devices on the Garmin Marine

To check the status of a device:

Use the ROCKER to highlight the device. The status of the network device

collected and saved to a data card. Use the data card with Marine Updater
on your personal computer to download software updates for your system.
Using Marine Updater, you can put all of the software updates on a data

To assign a name to a device on the network

1. Use the ROCKER to highlight the device, and then press ENTER to

card. When you put the data card into the unit, it updates the software for
all devices on the network. Check the Garmin Web site (www.garmin.com)
for future updates and announcements.

2. Use the ROCKER to enter a name for the device.

3. Press ENTER when finished.

is shown in the Status window.

highlight the Name field.

62 GPSMAP 3005C Owner’s Manual

MAIN MENU > PAGES TAB

Pages Tab

Use the Pages tab to change the page sequence or add or remove pages.

To change the page sequence:

1. Use the ROCKER to highlight the page you want to move in the Pages
list.

2. Press the Move Up soft key to move the page up, or press the Move
Down soft key to move the page down in the list.

3. Repeat steps 1–2 to change the page sequence for additional pages.

To add a page to the page sequence:

1. Press the Add Page soft key.

2. Highlight the page you want to add in the Unused Pages list, and press
ENTER. The page is added to the Pages list and appears on the Pages
menu when you press the ADJ key. Press the Move Up or Move Down
soft key to change page sequence.

To remove a page from the page sequence:

1. Highlight the page in the Pages list.

2. Press the Remove Page soft key. The selected page is moved to the
Unused Pages list.

To restore page defaults:

Press the Restore Defaults soft key to restore the pages list to the default

setting.

GPSMAP 3005C Owner’s Manual 63

MAIN MENU > MAP TAB

Map Tab

Use the Map tab to change map settings, including map detail, map orientation,
and automatic zoom. Changes made to the Map tab sub tabs affect all maps. For
more information, see page 37.

The Map tab has six sub tabs—Prefs, Detail, Labels, Nav, AIS, and Source.

Prefs Sub Tab

Use the Prefs sub tab to select map preferences.

• Map Outlines—turns coverage boxes on or off for BlueChart/MapSource

• Symbol Set—controls the navaid symbol set:

•

•

• Light Sectors

data.

NOAA—all maps are drawn using a symbol set similar to

NOAA/NIMA.

International—all maps are drawn using a symbol set similar to the

IALA symbol set.

—controls the drawing line sectors on the map. Select Off,

Auto, or On.

64 GPSMAP 3005C Owner’s Manual

MAIN MENU > MAP TAB

• Spot Soundings—turns on the depth spot sounding data. Select On,
Warn Depth, or Off.

• Warn Depth—shows the spot sounding below the set value in red. This
field is available only when Warn Depth is selected in the Spot Soundings
field.

• Orientation—sets the orientation of the map display:

North Up—fixes the top of the map display to a north heading.

•

• Track Up—fixes the top of the map display to the current track
heading. Set to

All Ranges for constant Track Up. The numeric value is
the map range at which the unit switches to North Up when zooming
out.

Course Up—fixes the map so the direction of navigation is always up

•
and turns the course line vertical on the screen.

• Defaults

—restores map settings to factory defaults for all tabs. Press the

Defaults soft key to restore original settings.

Detail Sub Tab

Use the Detail sub tab to control the amount of detail for charts, waypoints, active
routes, Tide Stations, services, saved tracks, and track logs shown on the Map
Page.

• Chart—controls how much map detail you see and which charts the unit
chooses to use for a particular zoom range. Select Most, More, Normal,

Less, or Least.

• Chart

, Waypoints, Active Route, Tide Stations, Services, Lat/Lon

Grid—sets the maximum scale at which the feature should appear on-

screen. Select Off, All Ranges, Auto, or <30 ft to <800 nm.

NOTE: Some types of data only show up to certain zoom scales.

GPSMAP 3005C Owner’s Manual 65

MAIN MENU > MAP TAB

Labels Sub Tab

Use the Labels sub tab to select the screen size of the text for a given map item.

Nav Sub Tab

Use the Nav sub tab to show or hide certain navigational features on the Map
Page and the scale at which they appear.

• Chart, Waypoints, Active Route, Tide Stations, Services, Spot
Soundings, Lat/Lon Grid—controls the screen size of the text for a given

• AutoZoom—toggles the automatic zoom on or off. When On, the map

map item. Select None, Small, Medium, or Large.

• Accuracy Circle—toggles the circle on or off. The circle represents the

• Bearing Line

automatically adjusts the map to a lower range as you approach your
destination point.

approximate accuracy of the GPS position based on EPE (Estimated
Position Error) and map data quality. Your actual location is somewhere
within the circle.

—sets the maximum scale at which the feature appears on the
screen and toggles the red/yellow line that continually points to the current
navigation point. Select Off, All Ranges, Auto, or <30 ft to <800 nm.

66 GPSMAP 3005C Owner’s Manual

MAIN MENU > MAP TAB

• Course Line—sets the maximum zoom scale at which the course line
appears on-screen. Select Auto, Off, or <120 ft to <800 nm.

• Heading Line

—draws an extension from the end of the boat icon in the
direction of travel. For Distance, enter the numeric distance value to which
you want the line to extend. For Time, enter the numeric time value for
which you want the line to extend. The Time line length automatically
adjusts as your speed changes.

AIS Sub Tab

• AIS Vessels—sets the maximum zoom scale at which AIS vessels appear
on-screen. Select Off, Auto, All Ranges, or <30 ft to <800 nm.

• Heading Line—draws an extension from the end of the boat icon in the
direction of travel. For Time, enter the numeric time value for which you
want the line to extend. The Time line length automatically adjusts as your
speed changes.

Source Sub Tab

Use the Source sub tab to turn basemaps and card maps on or off.
AIS (Automatic Identification System) alerts you to area traffic. AIS provides
ship IDs, position, course, and speed for ships equipped with a transponder within
range.

NOTE: You must set your chartplotter communication to NMEA In/NMEA

Out with a baud rate of 38,400 to receive AIS information.

• Basemap—turns the built-in basemap on or off.

• Card Maps—turns all optional BlueChart g2 or MapSource data on or off.

GPSMAP 3005C Owner’s Manual 67

MAIN MENU > MAP TAB

Use the Advanced soft key to show a list of the optional BlueChart or
MapSource data loaded on the data card. Each map family (or type) is described
by name and can be cleared if you do not want to show the data on the Map Page.

To show the

1. Press the Advanced soft key to open the Advanced Map Card Setup
window.

2. Use the ROCKER to highlight a map family in the Map Family Name list.

3. Press the Off soft key to select or hide the map family, or press the On
soft key to show the map family. The map appears on the Map Page when
a check mark appears in the box adjacent to the map.
OR
Press the Show All soft key to show all map families. Press the Show

None soft key to clear all check boxes.

Advanced Map Card Setup:

4 To view the notes or chart information for that map area, highlight the map

name, and press ENTER.

5. Press the Chart Info soft key to view chart information. Press the Notes
soft key to view chart notes.

6. To scroll through the notes, highlight the Notes fields, press ENTER, and
use the ROCKER to scroll up, down, left, and right.

7. Press QUIT to exit.

68 GPSMAP 3005C Owner’s Manual

MAIN MENU > TEMP (TEMPERATURE) TAB AND SONAR TAB

Temp (Temperature) Tab

The Temp tab displays the water temperature log (if equipped with a temperature
sensing transducer or receiving NMEA Sonar temperature data). The chart reads
from right to left, so that the most recent temperature measured appears on the far
right side of the chart. The dotted grid lines within the chart indicate intervals in
the temperature scale and the duration of time.

• Log and Graph Scale—sets the temperature range (in degrees) for the
log. Select Auto to have the unit automatically determine the best range,
or select a span of 2, 4, 6, 8, or 10 degrees. Use the Reset button in Auto
mode to reset the automatic range.

• Log Duration—sets how fast or slow the temperature log scrolls (the
shorter the time duration, the faster the temperature log scrolls). Select a
duration from 1 minute to 2.5 hours.

Sonar Tab

The Sonar tab contains setup options for the Sonar Page. The Sonar Page appears
only if you have the Sonar check box selected on the Main Menu—System tab.
See the “Using Sonar” section on page 72 for more information.

GPSMAP 3005C Owner’s Manual 69

MAIN MENU > HIGHWAY TAB AND XM TAB

Highway Tab

Use the Highway tab to select whether waypoints and tracks are shown on the
Highway Page. Use the ROCKER and the ENTER key to select or clear options.

XM Tab

Us the XM tab to view and select XM Radio channels, add or delete favorites,
and obtain radio ID and XM WX Weather service level information. The XM tab
contains two sub tabs: Audio and Information. The XM tab appears only if the
Weather or XM Audio check box is selected on the System tab and you have a
GDL30/30A connected to your GPSMAP 3005C.

Audio Sub Tab

Use the Audio sub tab to view and select XM Radio channels, add a channel to
or remove a channel from the Favorites category, scan channels, and turn audio
output on or off. The Audio sub tab appears only if the XM Audio check box is
selected on the Main Menu—System tab.

• Active Route Waypoints—show all active route waypoints.

• User Waypoints

• Track Log

• Saved Tracks

—show only nearby waypoints.

—show current active track log.

—show any saved track logs.

NOTE: You must have a GDL30A connected to your GPSMAP 3005C and

your stereo receiver and a subscription to XM Radio to use the XM Radio
feature. For more information, see the GDL 30/30A Owner’s Manual.

Channel number Category

Artist

Song title

Channel name

Favorites

list

70 GPSMAP 3005C Owner’s Manual

MAIN MENU > XM TAB

To select an XM Radio channel:

1. Highlight the song, and press ENTER.

2. Press up or down on the ROCKER to select a channel, and press ENTER.

Using Favorites

You can create a customized list of your favorite XM Radio channels.

To add a channel to Favorites:

Select a channel, and then press the Add Favorite soft key. The channel

appears in the list of favorites.

To delete a channel from Favorites:

1. In the Favorites list, select a channel to delete, and then press the Delete

soft key to delete the selected channel from your Favorites list, or press
the Delete All soft key to delete all channels from your Favorites list. A
confirmation message appears.

2. Highlight OK, and press ENTER again to confirm.

To scan XM Radio channels:

1. On the Audio sub tab, highlight the Scan field, and press ENTER.

2. Select All channels to scan all channels.

OR
Select Category to scan only channels in the selected category.
OR
Select Favorites to scan only channels in your favorites list.

3. Press the Start Scanning soft key. Each channel plays for five seconds

and then advances to the next channel.

4. Press ENTER to stop scanning.

To turn audio on or off:

1. On the Audio sub tab, highlight the Audio Output field, and press
ENTER.

2. Highlight Off to turn off the audio output, or highlight On to resume audio
output, and press ENTER.

Information Sub Tab

Use the Information sub tab to view the radio identification number for weather
and audio, XM WX Weather subscription information, and a list of weather
features available to you based on your subscription plan. The Audio sub tab
appears.

GPSMAP 3005C Owner’s Manual 71

USING SONAR > UNDERSTANDING SONAR

USING SONAR

frequencies to get the information that you want. If you choose dual frequency,
the transducer alternates between the 50 kHz and 200 kHz signals. This capability

This section covers the additional options for the GPSMAP 3005C when used

allows you to see the best picture available at any depth.

with a GSD 20, GSD 21 or GSD 22 Sounder Module. Read the installation
instructions included with your Garmin Sounder Module to install the Garmin
Sounder Module.

NOTE: You must have a GSD 20, GSD 21, or GSD 22 Sounder Module

installed and connected to your GPSMAP 3005C to use the sonar features.

Using Dual Beam

Dual beam works best for shallow water (inland) applications. A dual beam
transducer can transmit a narrow or a wide beam. The water area covered by the
transmitted sound waves is determined by the beam width of the transducer and
the water depth. The narrow beam provides crisp detail of what is under your
boat, and is very helpful if you are fishing in deeper water where the beam covers

Understanding Sonar

The transducer mounted on your vessel sends sound waves down into the water

more area (for example, at a 30-foot depth, the narrow beam covers the area of

about a 7-foot circle).
in a cone shape, similar to a flashlight beam (covering a smaller circular area at
the top and angling out to a larger circular area at the bottom). These sound waves
reflect off of any object that they hit, and then the waves travel back up to the
transducer. These objects could be fish, branches, the bottom, or any other object
that has density that is different from the water. The transducer receives the sound
wave information, and then sends the information to the GSD 20, GSD 21, or
GSD 22 sounder module and then to the GPSMAP 3005C. The
GPSMAP 3005C displays the information on the screen for you to see and
interpret. The type of transducer and the settings that you choose determine how
the information is displayed on the screen.

Narrow

Beam

Wide

Beam

Using Dual Frequency

Dual frequency works best for deep water (for example, off-shore) applications.
The 200 kHz frequency allows you access to great detail about what is underneath
your boat. The 50 kHz frequency provides less detailed information, but
penetrates to greater depths with the same power. You can choose either or both

72 GPSMAP 3005C Owner’s Manual

USING SONAR > UNDERSTANDING SONAR

The wide beam is helpful in shallow water, because it gives you a much wider
view of objects in the water, including areas beyond the sides of your boat. At a
30-foot depth, the wide beam covers the area of approximately a 20-foot circle.

Between the bottom and the surface clutter, the fish appear as arches. Actual
fish returns might not always appear as perfect arches, due to the speed, fish
orientation, or other conditions. You can turn on the Fish Symbols setting if you
want to see on-screen fish in a fish shape.

Understanding the Sonar Display

One of the first things to understand about sonar is that the transducer sends a
beam down to the bottom of the water, much like the beam of a flashlight. The
beam starts small near your vessel and expands as it gets to the bottom.

The Sonar Page does not show a 3-D representation of the underwater
environment. Instead, the display is in two dimensions, much like if you took a
picture of an aquarium. Only the depth of the item in the water is shown.

The strongest sonar returns appear on your screen as the most intense solid
color (depending on your selected color scheme; red is the default). The weakest
returns appear as the less intense, less solid colors (blue is the default).

The bottom of the water is always going to be the strongest signal, and therefore
the most intense color. The bottom is the continuous, intensely-colored line
running across the bottom of the screen. The GPSMAP 3005C includes the latest
technology in interpreting bottom signals; it can see through fish, structures, and
thermoclines (shown in the weakest colors). However, large schools of fish or
dense structures close to the bottom can affect water depth return readings.

NOTE: If the GPSMAP 3005C is unable to track the bottom for any reason,

the digits in the depth window flash on and off to alert you that the unit is not
tracking the bottom.

The strength of the sonar return can also help you interpret the hardness of the
bottom of the water. The thicker the bottom line, the harder the bottom.

Fish Symbols Turned On

At the top of the screen, you might see a grouping of intense colors. This area is
surface clutter, which can be caused by waves or any other sonar interference at
the surface of the water. Too much surface clutter can obscure your view of fish.

Hard Structure Soft Structure

You can turn down the Gain setting to reduce this surface clutter.

GPSMAP 3005C Owner’s Manual 73

USING SONAR > SONAR PAGE

Sonar Page

The Sonar Page is where your GPSMAP 3005C becomes a powerful fishfinder/
flasher. If a GSD 20, GSD 21, or GSD 22 sounder module is not attached, the
Sonar Page appears only when the GPSMAP 3005C is in Simulator Mode or if
the Sonar check box is selected on the System tab.

To view the Sonar Page:

Press PAGE repeatedly until the Sonar Page appears.

Use the Fish Symbols option to view the actual sonar data, fish symbols, or a

combination of both. Fish symbols appear as red.

You can set the sonar display to show a split screen view of a zoomed portion

of the sonar, split frequencies, bottom lock (display scaled from the bottom up)

or a combination of these options. For example, you can choose to show dual

frequency at a 2X zoom (Dual 2X) on one half and normal range dual frequency

(Dual) returns on the other half. The display mode appears at the bottom of each

sonar display.

The sonar function window contains a right-to-left moving sonar image of the
water beneath your boat. Items appear as they pass under the transducer. The most
recent data is shown on the right side of the screen. The right side of the screen
contains a scale reflecting the depth of the area being shown. The top left corner
shows the depth, water temperature, and speed through water (if equipped with a
temperature or speed sensor).

Sonar Page with Split Screen

74 GPSMAP 3005C Owner’s Manual

USING SONAR > SONAR PAGE

Configuring the Sonar Page

You can customize the Sonar page to fit your navigational needs. See
“Configuring Main Pages” on page 33 for more information.

To add or remove functions on the Sonar Page:

1. Open the Sonar Page, and then press and hold the DATA/CNFG key to
open the Configuration window.

2. Using the ROCKER, highlight the function you want to add or remove, and
press ENTER. Only functions with a check mark in the check box next to
them appear on the Sonar Page.

To split the screen:

1. On the Configuration window, press the Split Zoom soft key to show a
split screen view of a zoomed portion of the sonar.
OR
Press the Split Freq soft key to show two different frequencies.

2. Press QUIT to return to the Sonar Page.

Using the Flasher

If you prefer the appearance of flasher sonars, select the Flasher function on the
Configuration window for the Sonar Page. It provides an almost instantaneous
return of what is below your boat.

Sonar Page and Flasher

The most intense, constant signal on the Flasher is the actual depth and bottom.
the colors indicate the different strength of the signals.

• A soft bottom (such as silt or mud) creates as signal that is narrow and
more faint.

• A hard bottom (such as sand or rock) creates a signal that is wider.

GPSMAP 3005C Owner’s Manual 75

USING SONAR > SONAR TAB

Using the Sonar Adjustment Menu

Use the Sonar adjustment menu to access the settings and features most
commonly used on the Sonar Page.

To select an adjustment option from the Sonar Page:

1. Press ADJ to open the Sonar adjustment menu.

2. Press up or down on the ROCKER to highlight the option you want to
change, and press ENTER.

3. Use the soft keys to make adjustments.

4. To exit an adjustment option, press the

To change a Sonar adjustment menu setting:

1. Select an adjustment menu option using the method described previously.

2. Press up or down on the ROCKER to change the setting, range, or
percentage (Off, 1-100%).

3. Press ENTER to accept the change, or QUIT to close the Sonar
adjustment menu.

Back soft key, or press QUIT.

The Sonar adjustment menu contains the following options:

• Gain—controls the sensitivity of the sonar receiver. Auto (default) is the
recommended setting. It automatically sets the sonar sensitivity. You can
also set the gain manually. To see more detail on the screen, increase the
receiver sensitivity by selecting a higher gain. If there is too much detail or
if the screen is cluttered, lower the sensitivity (lower the gain) to increase
the clarity of the screen. If Frequency is set to Dual, you can set the Gain
separately for each frequency (50 kHz and 200 kHz).

• Color Gain—controls what colors are applied to the objects on the screen.
Auto (default) is the recommended setting. It automatically sets the
colors, based on your Auto Color Gain setting. You can also set the Color
Gain manually. If Frequency is set to Dual, you can set the Color Gain
separately for each frequency (50 kHz and 200 kHz).

• Whiteline—controls how the unit shows information about the bottom
type (hard or soft). With the Whiteline Off, the bottom return shows as red
and contains no information on bottom hardness. With Whiteline set at
Normal or 1-100%, the bottom return becomes white with a red line, in the
default color scheme, indicating where the water meets the bottom. To turn
the Whiteline Off, press the ROCKER down until the setting bar is all the
way at the bottom of the range and reads Off.

• Frequency—only appears when using a dual frequency transducer. This
allows you to choose a sonar operation frequency. You can choose 200
kHz, 50 kHz or Dual frequency (to alternate between the two frequencies).

• Ultrascroll™/Scroll—adjusts the rate at which the Sonar Pages scroll from
right to left. Ultrascroll™ (default) is used when you select a scroll rate
from 90% to 100%. Auto automatically adjusts the scroll rate according to
the boat’s speed.

76 GPSMAP 3005C Owner’s Manual

USING SONAR > SONAR TAB

• Depth Line—adds a horizontal depth line across the screen that is used to

• Zoom View—available when you select a Zoom scale other than Off. You
measure the depth of underwater objects. The depth of the line appears on
the right side of the line. Press up or down on the ROCKER to control the
position of the line on the Sonar Page. To turn the Depth Line off, press the
ROCKER up until the setting bar is all the way at the top of the range and

• Tools—controls the display of useful sonar tools. The following options are
reads Off.

Depth line

•

• Color Bar

• Temp Graph—appears only if you have a temperature-capable

• Setup—opens the Sonar tab.

To adjust the range:

On the Sonar page, press the up RANGE key to decrease the range, or

The unit can be set to automatically track the bottom (Auto) or set to a

Zoom—sets a screen zoom scale. The following settings are available:

Off—turns off the Zoom function.

•

2x Zoom––displays the 2x zoomed picture.

•

4x Zoom––displays the 4x zoomed picture.

•

Btm (Bottom) Lock––displays the Bottom Lock (returns from the

•
bottom up) picture. When using this setting, “BL” appears at the bottom
of the screen.

user-specified depth range.

Using the Pointer on the Sonar Page

You can use the pointer (arrow) to reference sonar items and mark underwater
waypoints. This makes it easier to find and use an object, such as a stump, as a
future fishing location.When using this feature, the Sonar Page pauses. The depth
continues to update while the display is paused, but the unit does not show any
new sonar data until the Sonar Page resumes scrolling. Discontinuity is possible
from where the sonar information stops and where it starts again.

can use the Zoom View setting to change the viewing range of a zoomed
display. Auto follows the water bottom. If the display is Bottom Lock, the
Span setting adjusts how far off the bottom the unit shows data.

available:

A-scope—when you turn on A-scope, a vertical flasher bar appears on
the far-right side of the screen. This flasher displays structure and
bottom returns much the same as the Flasher Page. The horizontal width
of the A-scope signal indicates the strength of the signal.

—shows a gradient scale of the current Color Gain setting.

transducer. This setting toggles the display of a temperature graph on or
off on the bottom of a Sonar Page, and it matches the scrolling data.

press the down RANGE key to increase the range.

GPSMAP 3005C Owner’s Manual 77

USING SONAR > SONAR TAB

Marking an Underwater Waypoint

You can mark waypoints that are under the surface of the water.

To mark an underwater waypoint:

1. On the Sonar Page, use the ROCKER to move the pointer to the location
you want.

2. Press and release ENTER/MARK. The Review Waypoint Page appears
with the waypoint’s coordinates, default name, and pointer depth
automatically filled in.

3. To change the name, symbol, or depth, highlight the appropriate field, and
press ENTER. Make any changes, and press ENTER when finished.

4. Highlight OK, and press ENTER to return to the Sonar Page.

5. Press

QUIT to resume scrolling.

Sonar Tab

When a GSD 20, GSD 21, or GSD 22 is connected to the GPSMAP 3005C, and
either the Auto-Detect Services or Sonar check box is selected on the System
tab, the Sonar tab appears on the Main Menu.

Use the Sonar tab to set up the Sonar Page. The Sonar tab has three sub tabs:
General, Graph, and Water Temp.

General Sub Tab

Use the General sub tab to select the water type, depth number, automatic scroll
speed limit, scale, keel offset, and transducer type. The available General sub tab
options are as follows:

• Auto Gain—controls the aggressiveness of the Auto Gain when the Gain
option is set to Auto. The higher the setting, the greater the number of
targets appear on the screen. The lower the setting, the less clutter on the

To access and change a setting on the Sonar tab:

1. Press the Sonar Setup soft key to open the Main Menu. The Sonar tab is
automatically selected.

2. Highlight the setting you want to change, and press ENTER.

3. Press QUIT to return to the Sonar Page.

screen. The settings are Low, Medium (default), and High.

• Auto Color Gain—controls what colors are applied to the objects on the
screen when the Color Gain option is set to Auto. Color DCG™ is based
on depth and makes it easier to spot subtle changes in bottom conditions
or fish sizes.

DynaColor™ (default) represents the latest in sonar data
presentation and is recommended for all applications. The presentation is
based on bottom strength. It makes the bottom and the fish easier to see and
requires fewer adjustments.

78 GPSMAP 3005C Owner’s Manual

USING SONAR > SONAR TAB

• Automatic Scroll Speed Limit—automatically adjusts the Scroll rate with
the speed of your vessel. Entering your maximum cruising speed produces
a 100% scroll rate when you reach that speed. One half of that speed
produces a 50% scroll rate, and so on. The default is 30.0 kt.

• Keel Offset—allows you to offset the surface reading for the depth of a
keel. This makes it possible to measure depth from the bottom of your keel
instead of from a transducer’s location near the water line. Enter a positive
number to offset for a keel. You can also enter a negative number to
compensate for a large vessel that may draw several feet of water, requiring
the transducer to be submerged if you want to measure from the water line.
The Keel Offset is reflected in the depth reading.

Transducer at surface.

Enter (+) a positive

number to show depth

from bottom of keel.

Graph Sub Tab

Transducer at bottom of keel.

Enter (-) a negative number to

show depth from surface.

• Transducer Type—allows you to specify what type of transducer you are
using, either Dual Beam or Dual Frequency.

• Custom Range—allows you to specify a custom viewing range or scale.
When On, this range appears as Custom in the Range setting. The left
value is the top of the scale and the right value is the bottom of the scale.

• Calibrate Water Speed—this is available only if you are using a speed-
capable transducer/sensor. Calibration is required to ensure that the Water
Speed shown on your unit is accurate. The unit automatically uses the GPS

Use the Graph sub tab to select the color scheme, fish symbols, and scale.

ground speed, if it is available, for comparison on the calibration. If a GPS
ground speed is not available, use either your boat’s speedometer reading
(not always accurate) or a stopwatch to determine your speed over a certain
distance (distance / time = speed). It is recommended that the calibration
take place in water having little or no current.

To calibrate the water speed:

1. On the Sonar tab, press the Cal Water Spd soft key.

2. Bring the boat to a cruising speed. Both the top ground and uncalibrated
water speeds are shown at the bottom of the calibration window. Note your
top speed, stop the boat, and press ENTER.

3. By default, the top ground speed automatically appears in the “What
was your top water speed?” field. If a ground speed is not available,
the top uncalibrated water speed is used instead. If the new speed is
correct, highlight OK, and press ENTER. If you want to manually enter
a calibration, press ENTER on the speed field, enter a new speed, and
press ENTER.

GPSMAP 3005C Owner’s Manual 79

USING SONAR > SONAR TAB

The available Graph sub tab options are:

• Color Scheme—sets the colors for the Sonar and Flasher Pages.

• Fish Symbols—sets how the Sonar Page interprets suspended targets
and background information. If you select a fish symbol, the
GPSMAP 3005C identifies some returns for you by replacing
them with fish symbols (in large, medium, and small sizes based on the
size of the sonar return). If you are using dual beam, fish symbols from the
narrow beam (directly underneath your boat) are solid, and the returns from
the wide beam (out to the sides of your boat) are hollow.

Symbols are turned off.

Suspended targets appear as symbols. No background
information appears

Same as previous with the target depth shown.

Suspended targets appear as symbols. Background information
appears, making the distinction between fish and structure easier.

Same as previous with target depth shown.

• Scale

—controls the appearance of the depth scale shown vertically along
the right side of the graph. You can configure the depth scale to appear in
one of four different ways: as an Overlay, in the Corners, Basic, or No
Scale.

Water Temp Sub Tab

The Water Temp sub tab enables you to control the temperature log (if your boat
is equipped with a temperature transducer/sensor). The graph reads from right to
left, so that the most recent temperature measured appears on the far-right side
of the log. The dotted lines within the graph indicate intervals in the temperature
scale and the duration of time.

The following settings are available:

• Log and Graph Scale—sets the temperature range (in degrees) to
display on the log and on the Sonar Pages. Select Auto to have the unit
automatically determine the best range, or select a Span of 2, 4, 6, 8, or 10
degrees.

• Log Duration—sets how fast or slow the temperature log scrolls (the
shorter the time duration, the faster the temperature log scroll). Select a
duration from 1 Minute to 2.5 Hours. 10 Minutes is the default.

• Temperature Log—records the water temperature as you move through the
water so that you can look for temperature changes over a period of time.

80 GPSMAP 3005C Owner’s Manual

XM WX WEATHER > CUSTOMIZING PRESET WEATHER DISPLAYS

XM WX WEATHER

This section covers the additional XM WX Weather options for the
GPSMAP 3005C when used with the GDL 30/GDL 30A Marine
Weather/Audio Satellite Receiver. Read the GDL 30/GDL 30A Owner’s Manual
to properly install the GDL 30/GDL 30A.

Customizing Preset Weather Displays

When you turn on weather and sea surface features, they appear on the Map Page.
You can customize up to three weather presets. Default names are General, Sea
State, and Storms, but each weather preset name can be changed. On the Map
Page, press the Next Preset soft key to view each weather preset.

The setup page for each weather preset contains three tabs: Precipitation,

NOTE: You must have a GDL30 Marine Weather Satellite Receiver installed

and connected to your GPSMAP 3005C, and a subscription to XM WX
Weather to use the XM WX Weather features.

Atmosphere, and Sea Surface.

When a GDL 30/GDL 30A Marine Weather Satellite Receiver is connected to the
GPSMAP 3005C, and either the Auto-Dectect Services or Weather check box is
selected on the System tab, you can view weather options on the Map Page.

• Precipitation—set ranges for NEXRAD/cloud tops, storm cells, lightning,
and hurricanes. Settings include Off, All Ranges, or from 30 ft to 800 nm.

• Atmosphere—set ranges for wind, pressure, visibility, fronts, and city
conditions. Settings include Off, All Ranges, or from 30 ft to 800 nm.

• Sea Surface—set ranges for temperature, wave height, wave period, and
wave direction. Settings include Off, All Ranges, or from 30 ft to 800 nm.

To access weather setup options from the Main Menu

1. Highlight the Weather tab, and then highlight the Setup sub tab.

2. Highlight the on-screen button for the weather preset you want to

customize, and press ENTER.

Map Page with XM WX Weather

GPSMAP 3005C Owner’s Manual 81

XM WX WEATHER > CUSTOMIZING PRESET WEATHER DISPLAYS

Preset

name

To access weather setup options from the Map Page:

1. On the Map Page, press the Wthr Options soft key. Additional weather
soft keys appear along the bottom of the page, and the name of the
selected weather preset appears in the lower-left corner.

2. Press the Next Preset soft key to select a different weather preset.
OR
Press the Weather Setup soft key. Setup information for the current
weather preset appears.

82 GPSMAP 3005C Owner’s Manual

To change the name of the preset:

1. Use the ROCKER to highlight the name of the preset, and press ENTER.

2. Press up or down on the ROCKER to change the name, and press
ENTER when finished. The preset name is updated in the lower-left corner
of the map window.

To customize the preset weather options:

1. Select the weather preset you want to customize.

2. Select the tab you want to customize (Precipitation, Atmosphere, or Sea
Surface).

3. Highlight the field you want to change, and press ENTER.

4. Select the range, and press ENTER again.

XM WX WEATHER > WEATHER TAB

Weather Tab

Use the Weather tab on the Main Menu to set up or view weather options. The
Weather tab has six sub tabs: Current, Forecast, Sea Surface, Marine Bulletins,
Forecast Map, and Setup.

To find weather conditions at other locations

1. Highlight the Nearest To field, and press ENTER. The Find Weather
Information Page appears.

2. Highlight a search option, and press ENTER. The sub tabs show weather
information for the selected location.

Forecast Sub Tab

The Forecast sub tab displays forecast information for the selected city, waypoint,
or location. It is divided into two panels. The top panel shows the high/low
temperature, precipitation, and weather condition forecasts for the next few
days’ forecast. The number of days that appears in this panel depends on the data
available from the responding weather service center.

The bottom panel features a detailed 24-hour forecast for windows, wind gust,
and visibility. If more than four days appear, use the scroll bar to view additional
days.

Sea Surface Sub Tab

Use the Sea Surface sub tab to view weather data from buoys nearest to your
current location or another specified location.

To access the Weather tab:

1. Press and hold ADJ/MENU to open the Main Menu.

2. Press up or down on the ROCKER to highlight the Weather tab.

3. Press QUIT to exit the Main Menu and return to the previous page.

Current Sub Tab

The Current sub tab shows current weather conditions observed at a weather data
location closest to your current location or to any other city, waypoint, or location
you select. It also shows the time at which the observation was made.

Marine Bulletins Sub Tab

Use the Marine Bulletins sub tab to view marine bulletins nearest your current
location.

Forecast Map Sub Tab

The Forecast Map sub tab shows fronts, high and low pressure centers, and city
conditions.

Setup Sub Tab

Use the Setup sub tab to customize preset weather displays and view legends for
all weather conditions.

GPSMAP 3005C Owner’s Manual 83

APPENDIX > SPECIFICATIONS

APPENDIX

Specifications

Physical Specifications

Size: 4.7" H x 7.8" W x 3.0" D (120 mm x 197 mm x 75 mm)

Weight:

Display: 5" diagonal (12.7 cm) high resolution, 256-color TFT

Case: Fully gasketed, high-impact plastic alloy, waterproof to

Temp. Range: 5°F to 131°F (-15°C to 55°C)

Case: Fully gasketed, high-impact plastic alloy, waterproof to

GPS Performance (with GPS 17)

Receiver: Differential-ready 12 parallel channel WAAS capable receiver

Acquisition Times:

Warm: Approx. 15 seconds

Cold: Approx. 45 seconds

AutoLocate: Approx. 2 minutes

Update Rate: 1/second, continuous

1.8 lbs (0.8 kg)

(640 x 480 pixels), full VGA, with adjustable backlighting

IEC 60529-IPX-7

IEC 60529-IPX-7

GPS Accuracy:

Position: <15 meters (49 feet), 95% typical*
Velocity: 0.05 meters/sec steady state

WAAS Accuracy:

Position: <3 meters (10 feet), 95% typical*
Velocity: 0.05 meters/sec steady state
Dynamics: 6gs

Power

source: 10-35 V DC

Usage: 12 watts max. at 10 V DC

Fuse: AGC-2 - 2.0 Amp

84 GPSMAP 3005C Owner’s Manual

APPENDIX > INSTALLING AND REMOVING DATA CARD

PAGE

QUIT

ENTER

MARK

ADJ

MENU

DATA

FCTN

FIND

CNFG

NAV

MOB

Installing and Removing the Data Card

Data Card slot

The GPSMAP 3005C uses optional Garmin BlueChart and MapSource data
cards. By updating your GPSMAP 3005C software to version 3.0 or later, you can
use optional preprogrammed BlueChart g2 data cards.

Insert the data card in the card slot located on the front left of the unit. Data cards

Slide the data card door in

the direction of the arrow (to

the left) and pull to open it.

can be installed or removed at any time, whether the unit is on or off.

To install the data card:

1. Open the data card door by sliding the door in the direction of the arrow,
and lift the door open from left to right.

2. Insert the card into the slot, with the label facing the right screen and the
handle facing toward you.

3. Push the card into the unit. It in not necessary to force the card and
about 1/2" is still exposed when it is properly inserted. If the unit is on, a
confirmation tone sounds, and a message appears on-screen noting the
card details when the card is properly installed and accepted.

4. Close the cover until it locks.

If you insert a data card and get a card format not recognized message, remove
the card and reinsert it. If the card is still not recognized, contact Garmin Product
Support or your Garmin dealer for assistance. Data cards are not waterproof,
should not be exposed to moisture or excessive static charges, and should be
stored in the case supplied with the card.

To remove a data card:

1. Open the data card door by sliding the door in the direction of the arrow,
and lift the door open from left to right.

2. Grasp the card handle and pull out firmly.

3. If the unit is on, a confirmation tone sounds when the data card is
removed.

The first time you insert a data card, the unit takes a few seconds to read the
card. After the data card is read, a summary page appears. Press

ENTER to

acknowledge.

GPSMAP 3005C Owner’s Manual 85

APPENDIX > SATELLITE INFORMATION AND WHAT IS WAAS/EGNOS?

45°

90°

Outer ring ­the horizon

Inner ring- 45°
above the horizon

Center dot - 90°
above the horizon

Satellite Information

What is WAAS/EGNOS?

The Wide Area Augmentation System (WAAS) is an FAA-funded service to
improve the overall integrity of the GPS signal for users in North America. In
Europe, WAAS is referred to as EGNOS.

The system is made up of satellites and approximately 25 ground reference
stations positioned across the United States that monitor GPS satellite data. Two
master stations, located on either coast, collect data from the reference stations
and create a GPS data correction message.

Satellite Sky View

According to the FAA’s Web site, testing of WAAS in September 2002 confirmed
an accuracy performance of 1–2 meters horizontal and 2–3 meters vertical

Satellite Location

throughout the majority of the continental United States and portions of Alaska.

The location of each available satellite is shown over two location rings on
the Satellite Information Page. The outer ring represents the horizon, the
inner ring represents 45° above the horizon, and the center represents directly
overhead. When the unit is using a satellite for navigation, the satellite number
is highlighted on the location rings. The unit can display satellite location with
North or your current track at the top of the display.

Satellite Strength Indicator Bars

The Satellite Strength Indicator Bars show the strength of the signal being
received, and the status of the signal. The bars are either shaded or filled. A
hollow gray bar means the unit is in the process of storing orbital data it is
receiving from the satellite signal. When the bar turns solid green, the unit
is using the satellite signal for navigation. A “D” in or above the bar means
differential corrections (WAAS or DGPS) are being applied to that satellite.

Date, Time, and Current Location

The unit gets date and time information from the satellite’s on-board atomic
clock. When the unit has achieved a 2D or 3D GPS location, the current location
is shown in the location format you have selected.

86 GPSMAP 3005C Owner’s Manual

WAAS is just one service provider that adheres to the Minimum Operational
Performance Standard (MOPS) for global Satellite Based Augmentation Systems
(SBAS). Eventually there will be several services of worldwide geostationary
communication satellites that broadcast integrity information and differential
correction data as transmitted by ground reference stations.

All SBAS systems use the same receiver frequency; therefore any operational
SBAS system should be capable of providing your GPS unit with increased
accuracy at any location in the world.

Currently, enabling WAAS on your GPSMAP 3005C in regions that are not
supported by ground stations might not improve accuracy, even when receiving
signals from an SBAS satellite. In fact, it can degrade the accuracy to less than
that provided by GPS satellites alone. For this reason, when you enable WAAS
on your Garmin GPS receiver, the receiver automatically uses the method that
achieves the best accuracy.

For more information, go to http://gps.faa.gov.

APPENDIX > DIGITAL SELECTIVE CALLING (DSC)

WAAS Capability

The GPSMAP 3005C is capable of receiving WAAS satellite signals. Effective
use of the WAAS satellite signal may be limited by your geographic location in
relation to those satellites, now in developmental service. WAAS satellite signal
reception requires an absolute clear view of the sky and works best when there
are no nearby obstructions such as buildings or mountains.

WAAS satellites are numbered 33 or higher when viewing the sky view on your
GPSMAP 3005C. Initial reception of the WAAS signal may take up to 15-20
minutes, then 1–2 minutes afterwards. When WAAS differential correction has
been received for GPS satellites (numbers 32 or below), a “D” appears in the
signal bar of the sky view and “Ready For Navigation with WAAS” appears in
the Status field. To learn more about the WAAS system, its satellite locations and
current state of development, visit the FAA web site (http://gps.faa.gov).

Because WAAS requires CPU resources of the GPSMAP 3005C to search for
and track the satellites, you can disable the WAAS feature to improve unit
performance if WAAS reception is not available in your area.

Digital Selective Calling (DSC)

When your Garmin GPSMAP 3005C is connected to a VHF radio with DSC
support, the GPS unit displays a Call List, Log, and a Directory to store incoming
information received from another user’s DSC capable VHF/GPS combination.
Basic wiring is required for the Garmin unit and VHF radio to send and receive
NMEA data from each other. See the GPSMAP 3005C & GPS 17 Installation
Instructions.

What is DSC?

Digital Selective Calling (DSC) uses marine VHF radio and Global Positioning
System (GPS) technologies to transmit and receive location information. DSC
is used by mariners to assist them in two major areas: distress calls and position
reporting.

A non-emergency DSC position report allows mariners to exchange and display
the positions of one another. When a DSC position is received, the mariner can
choose to create a waypoint or show the received position on an electronic map.

An emergency DSC distress call allows a vessel in trouble to transmit a

To disable or enable WAAS:

1. On the GPS tab, highlight the Setup sub tab.

2. Use the ROCKER to highlight the WAAS field, and press ENTER.

3. Highlight On or Off, and press ENTER.

substantial amount of information in a single transmission or “call” without
the need for voice communication. When any nearby rescuer receives the DSC
signal, an alarm sounds, and they immediately receive the position of the caller.

The rescuer can then choose to navigate (Go To) the caller’s location to assist or
forward the call on to the Coast Guard. When the Coast Guard receives the call,
they can immediately access the caller’s information (such as who the caller is
and the type of vessel) in their database while they are in transit to the caller’s
location.

GPSMAP 3005C Owner’s Manual 87

APPENDIX > DIGITAL SELECTIVE CALLING (DSC)

Any time a vessel receives a DSC call, the vessel can store that location and
quickly navigate to that position using a Go To. This makes DSC a time-saver,
especially in an emergency situation. To use DSC, users must first register their
VHF radio with the FCC and receive a Maritime Mobile Service Identity (MMSI)
number.

What is a Maritime Mobile Service Identity (MMSI)?

Maritime Mobile Service Identity (MMSI) allows a VHF radio to act like a
phone. To make a “call” on a phone, you first need a phone number to dial. The
9-digit MMSI number acts like a phone number when used in a position report
and as a unique identifier to the Coast Guard when used in an emergency distress
call. To obtain a Maritime Mobile Service Identity (MMSI) number, users must
register their VHF radio with the FCC (Form 605). Garmin does not supply this
number!

Federal Users in the United States

Federal users can obtain MMSI assignments from their agency radio spectrum
management office. These procedures are currently under review by the NTIA
(National Telecommunications and Information Administration).

Users Outside the United States

Users can obtain an MMSI assignment from their telecommunications authority
or ship registry, often by obtaining or amending their ship station license.

Users in Canada

Industry Canada is responsible for assigning MMSI numbers to commercial and
recreational vessels. Information is available at the following Web site:

http://apollo.ic.gc.ca/english/mmsi.html.

For more information regarding MMSIs, visit:

http://www.navcen.uscg.gov/marcomms/gmdss/mmsi.htm.

How Are MMSI Assignments Obtained?

Non-commercial users (recreational users who remain in domestic waters and
only carry VHF, EPIRB (Emergency Position Indicating Radio Beacons, and
Radar)) are not required to have a FCC ship station license. The FCC and Coast
Guard have authorized some second and third-party vendors to assign MMSI
numbers. This service is limited to registering recreational vessels only. To
receive information on how to obtain a recreational MMSI number, contact:

http://www.uscg.mil/rescue21/links/mmsi.htm or http://wireless.fcc.gov/marine/.

Non-Federal Users in the United States

Commercial users, or those who travel outside the U.S.A. or Canada, must apply
for a ship station license, or an amendment to a ship station license. To find out if
you require a Ship Station license, visit: http://wireless.fcc.gov/marine/fctsht14.

html. If your vessel requires licensing by the FCC, you can obtain a MMSI during

the application/licensing process when you file FCC Forms 159 and 605.

How Can Garmin Help You with DSC?

To receive Distress Calls or Position Reports, you must have a DSC-equipped
chartplotter as well as a VHF radio with DSC support. During normal, non­emergency Position Report communication, Channel 70 (156.525 MHz) has been
set aside as the VHF/DSC digital call channel.

For a Distress Call, a mariner presses the MayDay button on the VHF radio.
The call transmits on an emergency channel with the MMSI number attached to
the call (if you have DSC support). Any DSC-equipped mariner (on sea or land)
within range can receive the call.

88 GPSMAP 3005C Owner’s Manual

APPENDIX > LORAN TD SYSTEM

LORAN TD System

LORAN-C is a radio navigation aid operated and maintained in the United States
by the United States Coast Guard. The LORAN (LOng RAnge Navigation)
system covers the entire United States and the U.S. Coastal Confluence Zone.
From the perspective of a mariner, the system is used for ocean and coastal
navigation. It can be used as a supplemental system for harbor and harbor

Because the GPSMAP 3005C unit does not rely on the LORAN signal for
navigation, it can reference a different GRI chain or secondary stations and still
navigate to the location stored in memory.

The LORAN Position Format field is located on the Units sub tab on the Main
Menu—System tab. The Loran TD Setup window contains the fields to select the
LORAN Chain Number, Primary and Secondary Stations, and TD Offsets.

approach navigation, and it is used for inland navigation by recreational vehicles.

To

set up LORAN TD from the Main Menu:

LORAN TD Feature

The LORAN TD (Time Delay) feature eases the transition from using LORAN
to using GPS. The GPSMAP unit automatically converts GPS coordinates to
LORAN TD for those who have a collection of LORAN fixes for favorite fishing
spots and other waypoints recorded as TDs. You can display your position as a

1. Using the ROCKER, highlight the System tab, press right on the
ROCKER to highlight the Units sub tab. Highlight the Position Format

field, and press ENTER.

2. Highlight Loran TD, and press ENTER, and then highlight the Setup
button to the right, and press ENTER again.

TD or enter waypoints as TDs. The accuracy to be expected from this conversion
is approximately 30 meters. When the unit is placed in the LORAN TD format
mode, it simulates the operation of a LORAN receiver. Position coordinates may
be displayed as TDs, and all navigation functions may be used as if the unit was
actually receiving LORAN signals.

Using the LORAN TD Format

When creating new waypoints using LORAN TD coordinates, you must set the
correct LORAN chain number and secondary stations in the Setup TD field
before storing a waypoint. You must have the correct chain number as well as the
secondary station identifiers to use this option correctly. These values vary for
each coordinate set or geographical location. Failure to enter correct information
could result in inaccuracies for the desired destination. After the waypoint is
stored in the unit’s memory, it always references the LORAN chain number
and secondary stations currently selected in the Setup TD field. If you enter a
different LORAN chain number, change the secondary stations or offsets in the
Setup TD field, the active waypoint information reflects those changes.

3. To change the settings of any of the five fields, highlight the field, press
ENTER, select the setting you want, and press ENTER again.

GPSMAP 3005C Owner’s Manual 89

APPENDIX > CARING FOR THE GPSMAP 3005C

If the active GRI Chain, secondary stations, or offsets were changed since the
waypoint was created, the waypoint now references the active GRI-chain and
secondary stations and adjusts the TD coordinates accordingly. Remember that
the GPS is not relying on the LORAN signal for navigation and actually converts
the TD coordinate to a useful latitude/longitude coordinate (in the background)
before storing the waypoint to memory or using it for navigation. Because of this,
the unit can navigate to a TD coordinate anywhere in the world.

For more information on LORAN TDs, you can download Garmin’s

Position Format Handbook from the Garmin Web site.

Loran TD

Caring for the GPSMAP 3005C

The GPSMAP 3005C 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. Wipe dry. Avoid chemical cleaners and solvents that
may damage plastic components.

Cleaning the Screen

The GPSMAP 3005C lens 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 using an eyeglass lens cleaner that is specified as
safe for anti-reflective coatings and a clean, lint-free cloth.

Storage

Do not store the GPSMAP 3005C where prolonged exposure to extreme
temperatures may occur (such as in the trunk of a car) because permanent damage
may result. User information, such as waypoints and routes, are retained in the
unit’s memory without the need for external power. It is always a good practice
to back up important user data by manually recording it, loading it to a computer
(transferring it to MapSource), or storing it on a data card.

Water Immersion

The GPSMAP 3005C is waterproof to IEC Standard 60529 IPX7. It can
withstand immersion in 1 meter of water for 30 minutes. Prolonged submersion
can cause damage to the unit. After submersion, be certain to wipe and air dry the
unit before reuse.

90 GPSMAP 3005C Owner’s Manual

APPENDIX > NAVIGATION TERMS

Navigation Terms

Avg Speed—the average of all second-by-second speed readings since the last
reset.

Bearing (BRG)—the compass direction from your current location to a
destination.

Course—the course between the active from and to waypoints.

Depth—the depth below the transducer. This field is active only if the

GPSMAP 3005C is connected to a Garmin Sounder Module or if NMEA depth is
available.

Distance (Dist)—the distance from the current location to a destination.

Dist to Destination—the distance from the current location to a Go To

destination or the final waypoint in a route.

Dist to Next—the distance from current location to a Go To destination or the
next waypoint in a route.

DOP (Dilution of Precision)—reflects the quality of the GPS signals and satellite
geometry.

Elevation—the altitude (height) above mean sea level (MSL).

ETA (Estimate Time of Arrival)

destination waypoint, based on current speed and track.

ETA at Destination—the time you estimate to reach a Go To destination or the
final waypoint in a route.

ETA at Next—the estimated time to reach a Go To destination or the next
waypoint in a route.

—the time you estimate to reach your

Fuel—the fuel required to travel from your current location to the indicated route
waypoint.

GPS Accuracy

Leg Dist—the distance between two route waypoints.

Leg Fuel—the fuel required to travel from a route waypoint to the next waypoint

in the route.

Leg Time

waypoint in the route.

Max Speed—the maximum second-by-second speed recorded since last reset.

Moving Average Speed

Moving Trip Timer

Odometer—a running tally of the distance traveled, based on the distance

between second-by-second position readings.

Off Course—the distance you are off course in either direction, left or right.

Pointer—the arrow indicating the direction to travel to the next point on the

route.

Speed—the current velocity at which you are traveling, relative to ground.

Sunrise—the time at which the sun rises on this day.

Sunset—the time at which the sun sets on this day.

Time Of Day

Time To—the estimated time required to reach a Go To destination or the next

waypoint in a route. Also known as “estimated time en route” (ETE).

—estimated accuracy of the GPS position.

—the time required to travel from a route waypoint to the next

—the average speed while the unit is moving.

—the total time the unit has been moving.

—the current time.

GPSMAP 3005C Owner’s Manual 91

APPENDIX > NAVIGATION TERMS

Time to Dest—the estimated time required to reach a Go To destination or the
final waypoint in a route.

Time to Next—the estimated time required to reach a Go To destination or the
next waypoint in a route.

To Course

—the recommended direction to steer to reduce course error or stay on
course. Provides the most efficient heading to get back to the course and proceed
along your route.

Track—the direction of movement relative to the ground. Also known as “ground
track.”

Trip Odometer

—a running tally of distance traveled since the last reset. See also

“Odometer.”

Total Average Speed

—the average speed of the unit for both moving and

stopped speeds since the last timer reset.

Total Trip Timer

—total time the unit has been in operation since the last reset of

VMG (Velocity Made Good)—the speed at which you are closing in on a
destination along a course. Also referred to as the vector velocity to your
destination.

Voltage

Water Speed—the speed through the water. This field is active only if the

GPSMAP 3005C is receiving speed readings from a NMEA device or a Garmin
Sounder Module.

Water Temp—the water temperature. This field is active only if the
GPSMAP 3005C is receiving temp readings from a NMEA device or a Garmin
Sounder Module.

Waypoint Destination—the final waypoint in the route or the destination
waypoint.

Waypoint Next

the trip timers.

Turn—the angle difference between the bearing to your destination and your
current track. L indicates you should turn left; R indicates you should turn right.

—the current voltage reading being received by unit.

—the next waypoint in the route.

92 GPSMAP 3005C Owner’s Manual