Garmin GPSMAP 180 Owner's Manual

Garmin International, Inc., 1200 E. 151st Street, Olathe, KS 66062 USA Tel: 913-397-8200 FAX: 913-397-8282 Garmin (Europe) Ltd., Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey SO51 9AQ UK Tel: 011-44-1794-519944 FAX: 011-44-1794-519222 Garmin (Asia) Corp., 3F, No. 1, Lane 45, Pao Hsing Road, Hsin Tien, Taipei, Taiwan R.O.C. Tel: 011-886-02-2917-4107 FAX: 011-886-02-2917-1758

TracBackTM and PhaseTrac12TM are trademarks of GARMIN Corporation and may only be used with permission. All rights are reserved. Software Version 4.02 or above Internal Database Version 3.00 Micro G-chart TM cartridge data is copyrighted by Navionics Corporation and GARMIN Corporation and may not be copied or used for any other purpose with- out permission. © Copyright 1999 GARMIN Corporation 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 Corporation. GARMIN Corporation hereby grants permission to download a sin- gle copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manu- al or of any revision hereto, provided that such electronic or printed copy of this manual or revision 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. March 1999 Part #190-00157-10 Rev. A Printed in Taiwan.

responsible for its accuracy and maintenance. The system is subject to changes which could affect the accuracy and performance of all GPS equipment. Although the GARMIN GPSMAP 180 is a precision electronic NAVigation AID (NAVAID), any NAVAID can be misused or misinterpreted and, therefore, become unsafe. Use the GPSMAP 180 at your own risk. To reduce the risk of unsafe operation, carefully review and understand all aspects of this Owner’s Manual—and thoroughly practice operation using the simulator mode prior to actual use. When in actual use, carefully compare indications from the GPSMAP 180 to all available navigation sources, including the information from other NAVAIDs, visual sightings, charts, etc. For safety, always resolve any discrepancies before continuing navigation. NOTE: This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interfer- ence will not occur in a particular installation. If this equipment does cause harmful interference, the user is encouraged to try to correct the interference by relocating the equipment or connecting the equipment to a different circuit. Consult an autho- rized dealer or other qualified technician for additional help if these remedies do not correct the problem. This device complies with Part 15 of the FCC limits for class B digital devices for home or office use. Operation is subject to the following conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. The GPSMAP180 contains no user-serviceable parts. Repairs should only be made by an authorized service center. Unauthorized repairs or modifications could void your warranty and your authority to operate this device under Part 15 regulations. ii INTRODUCTION Cautions CAUTION! The GARMIN GPSMAP 180 has no user-ser- viceable parts. Should you ever encounter a problem with your unit, please take it to an authorized GARMIN dealer for repairs.

GPSMAP 180 is a powerful navigation device that can help guide you in water- ways around the world: Precision Performance • 160 x 240 pixel High-contrast 4-level gray LCD screen • PhaseTrac12TM receiver tracks and uses up to 12 satellites simultaneously for fast, accurate positioning • Differential-Ready— just add the optional GBR 21 beacon receiver for better than 10-meter accuracy • Gasketed case for use in exposed locations Advanced Navigating and Plotting • 250 alphanumeric waypoints with selectable icons and comments • Built-in worldwide database usable from 4096 to 64 nm scales • 20 reversible routes with up to 30 waypoints each • Micro G-chart TM electronic charting with inland and offshore coverage • On-screen point-to-point distance and bearing calculations • TracBack TM route feature which allows you to quickly retrace your track log to a starting position • Built-in simulator mode

manship for one year from the date of purchase. GARMIN International, Inc. will at its sole option, repair or replace any components which fail in normal use. Such repairs or replacement will be made at no charge to the customer for parts or labor. The customer is, however, responsible for any transportation costs. This warranty does not cover failures due to abuse, misuse, accident, or unauthorized alteration or repairs. GARMIN International, Inc. assumes no responsibility for special, inciden- tal, punitive or consequential damages, or loss of use. The warranties and remedies contained herein are exclusive, and in lieu of all other warranties expressed or implied, including any liability arising under warranty of merchantability or fitness for a particular purpose, statutory or otherwise. This warranty gives you specific legal rights, which may vary from state to state. To obtain warranty service, contact the GARMIN Customer Service department at 913-397-8200 for a returned merchandise tracking number. The unit should be securely packaged with the tracking number clearly marked on the outside of the package, and sent freight prepaid and insured to a GARMIN warranty service sta- tion. A copy of the original sales receipt is required as the proof of purchase for war- ranty repairs. GARMIN retains the exclusive right to repair or replace the unit or software at its sole discretion. iv INTRODUCTION Warranty

tems available! The GARMIN GPSMAP 180 combines the proven performance of GARMIN GPS with powerful Micro G-Chart electronic charting for detailed car- tography and plotting wherever you cruise. To get the most out of your new navigation system, take the time to go through this operator’s manual and learn the operating procedures for your unit. This manual is broken down into two sections for your convenience. Getting Started introduces you to the GPSMAP 180 and provides a tutorial that will help you become more familiar with the unit. This part will provide you with a basic working knowledge necessary to use the unit to it’s fullest potential. The Reference portion is divided into sections that provide detailed instructions on the advanced features and operations of the GPSMAP 180. This allows you to concentrate on a specific topic quickly, without reading through entire portions of text that you may not need. An Appendix section concludes the manual with specific information needed for custom setup, trouble shooting, and indexing. PREFACE WARNING! The electronic chart is an aid to navigation and is designed to facilitate the use of autho- rized government charts, not replace them. Only official government charts and notices to mariners contain all information needed for the safety of navigation–and, as always, the user is responsible for their prudent use.

your package includes the following items. If any parts are missing, please see your GARMIN dealer immediately. Standard Package: • GPSMAP 180 Unit • External Antenna and 30’ cable • Power/Data Cable • Mounting Bracket and Knobs • Owner’s Manual • Quick Reference Card Optional Accessories: • Micro G-chart Electronic Chart Cartridges • PC Kit

Foreword .........................................................................................................................i Cautions..........................................................................................................................ii Capabilities/Warranty ................................................................................................iii-iv Preface/Packing List.....................................................................................................v-vi Table of Contents/Keypad Usage................................................................................vii-x Getting Started...........................................................................................................1-16 Initializing the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2 Turning the Unit On & Screen Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Satellite Page Intro & Position Page Intro . . . . . . . . . . . . . . . . . . . . . . . . .4-5 Marking Your Present Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Map Page Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Using the Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Going to a Destination & Activating a Route . . . . . . . . . . . . . . . . . . . . . . . .9 Navigation Simulator & Map Scale Intro . . . . . . . . . . . . . . . . . . . . . . . . . .10 Using the Cursor to Pan and Mark Waypoints . . . . . . . . . . . . . . . . . . .10-11 Navigation Page Intro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Changing Simulated Speed & Direction and Highway Scales/Data Fields .13 Active Route Page & Deactivating a Route . . . . . . . . . . . . . . . . . . . . . . . . .14 Main Menu Intro & Deleting the Track Log . . . . . . . . . . . . . . . . . . . . . . .15 Turning the Unit Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Section 1: GPSMAP Status Page ...............................................................................17-19 Satellite Page Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Satellite Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 Satellite Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Section 2: Position Page...........................................................................................20-21 Position Page Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Position Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Map Page Overview & Data Window . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 Map Modes Position Mode & Cursor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Using the Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Selecting Map Scales “Over Zoom” & ”No Map” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 Map Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Map Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27-28 Map Colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 Map Display & Data Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Section 4: Navigation Page ......................................................................................30-32 Navigation Page Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 Highway Scale & Navigation Page Options . . . . . . . . . . . . . . . . . . . . .31-32 Section 5: Main Menu Page ..........................................................................................33 Main Menu Page Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 Section 6: Waypoints ..............................................................................................34-42 Creating Waypoints & Using the Mark Key . . . . . . . . . . . . . . . . . . . . .34-35 Creating Waypoints On Map & By Text . . . . . . . . . . . . . . . . . . . . . . . . . .36 Reference Waypoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 Reviewing and Editing Waypoints by Text . . . . . . . . . . . . . . . . . . . . . . . .38 Waypoint Definition Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39 Waypoint Submenus & Nearest Waypoints . . . . . . . . . . . . . . . . . . . . . . .40 Proximity Waypoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 Create Waypoint & Waypoint List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42 Section 7: GOTO/MOB/TracBack Functions ............................................................43-46 Selecting A GOTO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43 GOTO Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44 MOB & TracBack Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45-46 viii GETTING STARTED Table Of Contents

Creating a Route On Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47 Reviewing and Editing Routes On Map . . . . . . . . . . . . . . . . . . . . . . . . . . .48 Route Edit Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49-50 Route Edit Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 Route List Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51-52 Active Route Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53 Active Route Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54 Section 9: Setup Menus............................................................................................55-64 Track Log Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55 Trip and Fuel Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56 Route and Trip Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57 Sunrise & Sunset Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58 System Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58-59 Navigation Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60-61 Timers & Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62 Input & Output Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63 NMEA & DGPS Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64 Section 10: Using G-chartcartridges ........................................................................65-66 Installing and Removing G-Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65 Using G-Chart Cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66 ix GETTING STARTED Table Of Contents APPENDICES Appendix A: GPSMAP 180 Installation . . . . . . . . . . . . . . . .67-69 Appendix B: Wiring & Specifications . . . . . . . . . . . . . . . . .70-71 Appendix C: Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72-73 Appendix D: Map Datums . . . . . . . . . . . . . . . . . . . . . . . . . .74-76 Appendix E: Navigation Terms . . . . . . . . . . . . . . . . . . . . . .77-78 Appendix F: Time Offset Chart . . . . . . . . . . . . . . . . . . . . . . . . .79 Appendix G: Loran TD Position Format . . . . . . . . . . . . . . . . . .80 Appendix H: Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81-83

display from a submenu page to a main page. Captures your present position and displays the mark position window. Returns display to a previous page or restores a data field’s previous value. Decreases the scale of the moving map and highway pages. Increases the scale of the moving map and highway pages. Controls the movement of the cursor and is used to select options and positions, and to enter data. Displays the GOTO waypoint window, allowing you to select the destination waypoint. Press GOTO twice to select a destination waypoint from the map. Displays context-sensitive options window. Press MENU twice to display main menu page. Activates highlighted fields and confirms menu options and data entry. Turns the unit on and off and controls 3-level screen backlighting. The GPSMAP 180’s advanced keypad sys- tem is designed to allow for fast, convenient selection of navigation options and data entry. The Getting-Started Tour will introduce you to most of the keypad and provide a “hands-on” lesson in using the GPSMAP 180. We strongly encourage you to take the Getting-Started tour before using your unit for actual navigation. The GPSMAP 180 Quick Reference Card contains helpful tips on using the unit and performing various navigation tasks. It’s a good idea to keep the Quick Reference Card nearby whenever you’re navigating with your new GPS chartplotter. B Marks your present GPS position and instantly sets a return course while providing steering guidance. x C D

The first time you power up your new GPSMAP 180 is an important step in get- ting the best possible GPS performance. The receiver must be given an opportunity to collect satellite data and establish its present position. To ensure proper initializa- tion, the GPSMAP 180 is shipped from the factory in AutoLocateTM mode, which will allow the receiver to “find itself” anywhere in the world. To speed up the initializa- tion process, we recommend using the graphic initialization process described below, which will usually provide a position fix in about a minute. Before you initialize, make sure the GPSMAP unit and antenna have been correctly installed on your vessel according to the instructions in Appendix A. To turn the GPSMAP 180 on: 1. Press and hold the P key until the power tone sounds. The welcome page will appear while the unit conducts a self test. Once the internal test is complete, the mariner’s warning will appear, asking you to read and acknowledge important information regarding the proper use of electronic charts. To acknowledge the mariner’s warning: 1. Press the T key. A message alert and prompt will also appear asking you to select an initialization method. To view a message: 1. Press the J key. 2. Press the J key again to return to the previous page. A. The welcome page will be displayed while the unit performs a self-test. B. Confirm the mariner’s warning before starting navigation. Remember that the electronic chart is designed as a supple- ment to local government charts, not as a replacement. A B

highlighted. 1. Press T to initialize the receiver from the built-in worldwide map. The Map Page will appear, prompting you to select your approximate present posi- tion with the map cursor. 1. Use the R keypad to move the map cursor to a location close to your present position. If you have difficulty identifying your exact position, press the C key to zoom in to a lower map scale. 2. Press T to confirm your selection. The GPSMAP 180 will now begin searching for the appropriate satellites for your present position and should acquire a fix within a few minutes. While the receiver searches for satellites, a flashing satellite icon will appear at the left-hand side of the status bar. A signal strength bar will appear for each satellite in view, with the appro- priate satellite number under each bar. 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 col- lecting data. • Solid signal strength bars— the receiver has collected the necessary data and the satel- lite(s) is ready for use. Once the receiver has collected information from at least three satellites, the flash- ing satellite icon on the status bar will quit flashing and remain solid, and the GPSMAP 180 is ready for use. Now that the unit is initialized, let’s turn the unit off and then begin the Getting- Started Tour. To turn the GPSMAP 180 off: 1. Press and hold the P key for about 3 seconds, until the screen is blank. 2 GETTING STARTED Initialization A. Use the arrow keypad to move the cursor to a location close to your present position. B. Hollow signal strength bars will appear on the Satellite Page while the receiver collects satel- lite data.

The GARMIN GPSMAP 180 is a powerful electronic charting/navigating system that provides detailed chart coverage and convenient control of many advanced features right from the map display. This tour is designed to take you through the basic pages and functions of the system using the simulator mode. Once you’re familiar with the main pages and functions of the unit, refer to the reference sec- tion for instructions on performing specific tasks and functions. The Getting-Started Tour assumes that the receiver has been properly installed and initialized, and you have not changed any of the default unit settings. If you have changed any settings (position formats, units of measure, etc.), the descrip- tions and pictures in the tour may not match your configuration. To turn the GPSMAP 180 on: 1. Press and hold the P key until the power tone sounds. The welcome page will appear while the unit conducts a self test. 2. Once the self test is complete, press the T key to acknowledge the mariner’s warning. The Satellite Page will appear, and the receiver will begin to acquire satellites. From the Satellite Page, you may also quickly adjust the screen contrast and back- lighting. To adjust the screen contrast: 1. To increase the screen contrast, press the right arrow of the R keypad. 2. To decrease the screen contrast, press the left arrow of the R keypad. 3. Press the T key to finish. The GPSMAP 180’s three-level screen backlighting is controlled with P key, and may be adjusted at any time from any page. To turn on and adjust the backlighting: 1. Press the P repeatedly until the backlighting is at the desired level (off, 1, 2, or 3). 3 GETTING STARTED Power On & Screen Contrast A. The screen contrast may be adjusted from the Satellite Page by pressing the ARROW KEY- PAD. Press EDIT/ENTER to confirm changes. B. Whenever the screen backlighting is on, a bulb icon will appear in the status bar at the bottom of every GPSMAP 180 page.

tion and receiver status, with a signal strength bar graph and a satellite sky view in the center of the page. Each page of the GPSMAP 180’s system also features an options page, which gives you access to other functions and features that relate to the specific page you are viewing. To get a feel for how the options pages work, lets put the GPSMAP 180 into simulator mode. To place the GPSMAP 180 in simulator mode: 1. From the Satellite Page, press the O key. The options page will appear, displaying a menu of options and functions for the Satellite Page. 2. Use the UP or DOWN arrow of the R keypad to highlight the ‘Start Simulator?’ option and press T. 3. Press the T key to confirm the simulator warning. Once the simulator has been started, the status field at the top of the page will display a ‘Simulating Navigation’ status, and you’re ready to continue the rest of the tour. Keep in mind that the GPSMAP 180 does not track satellites in simulator mode, and should never be used for actual navigation. All the waypoint and route planning done in simulator mode will still be retained in memory for future use. 4 GETTING STARTED Satellite Page & Simulator Mode A. To start the simulator, confirm the simulator warning. Simulator mode should never be used for actual navigation. B. Whenever the GPSMAP 180 is in simulator mode, a ‘Setup Simulator?’ and an ‘Exit Simulator?’ option will appear on the options page. Status Field Horizontal Accuracy Satellite Sky View Signal Strength Indicators Status Bar Dilution of Precision

The Satellite Page is one of four main pages used in the GPSMAP 180’s system. All four pages are linked together in a simple chain, which allows you to scroll through the pages in either direction using the J and Q keys. To continue the tour, let’s move on to the next page, the Position Page. To scroll to the next page in sequence: 1. Press the J key. The GPSMAP 180’s Position Page shows where you are, what direction you’re heading and how fast you’re going. The compass tape at the top of the page indi- cates the direction you’re moving. The four user-selectable data fields below the compass tape show your current course and speed over ground, along with a resettable trip odometer and altitude display. Your current latitude and longitude, along with a 12/24-hour clock, appear at the bottom of the page. Now that you’ve seen how the Satellite and Position Pages can be used to moni- tor satellite acquisition and your present position, let’s take a minute to learn how to mark and store our present position as a waypoint. (Since we’re in simulator mode, the present position displayed will be the last position calculated by the receiver, which should be the spot where you’ve initialized the unit.) This will also give you an opportunity to see how the GPSMAP 180’s R keypad and T key are used for data entry. Graphic CompassTape Data Fields Position Coordinates Time of Day Status Bar

1. Press the M key. The mark position page will appear, with a default three-digit way- point name and symbol. 2. Use the R keypad to highlight the waypoint name field (001) and press T. 3. Press the LEFT ARROW of the R keypad to clear the name field. 4. Use the R keypad to enter the name ‘DOCK’, using the UP and DOWN arrows to select each letter, and the RIGHT arrow key to advance to the next character position. If you make a mistake and select an incorrect character, simply use the LEFT arrow key of the R keypad to backspace the cursor and correct the entry. 5. Press T to confirm the name. 6. The field highlight will advance to the symbol field. Press T to access the waypoint symbol page. 7. Use the R keypad to highlight the ANCHOR symbol. 8. Press T to confirm the symbol. 9. Press T again to confirm the ‘DONE?’ prompt and save the waypoint. The waypoint is now stored in memory. Note that waypoints may also be creat- ed directly from the map display or by manually entering position coordinates. Both of these techniques are described in the reference section of the manual and/or on your GPSMAP 180 quick reference guide. To continue our tour, let’s move on to the Map Page. 1. Press the J key. 6 GETTING STARTED Marking A Position A. The mark position page will automatically assign a default three-digit name for each waypoint, which can be changed at any time to an alphanumeric name containing up to six-characters. B. A complete set of waypoint symbols allows you to mark inland and offshore waypoints with a custom icon for fast waypoint recogni- tion.

table display of navigation data and a built-in worldwide database to 64 nm. It will also be the page you use most to create and edit waypoints and routes. Before we take off on our practice route, let’s take a brief look at its various features and displays. The map display, located in the middle of the page, shows your boat as a trian- gle marker on an electronically generated chart, along with geographic names, markers and buoys that are provided by the G-chart cartridge you’re currently using. It also displays your track, routes and nearby waypoints. An on-screen cursor lets you pan to other map areas, determine the range and bearing to a posi- tion, and perform various waypoint and route functions. The data window, located at the top of the page, provides a user-selectable dis- play of various navigation data, including course, speed over ground, and the bearing and distance to the cursor or a particular waypoint. The status bar, located at the bottom of the page, displays the current map scale setting, as well as the sta- tus information described on page 29. 7 GETTING STARTED Map Page A. To select an on-screen waypoint, simply move the cursor over the desired waypoint. The way- point/navaid name and position, along with the bearing and distance from your present posi- tion, will be displayed. B. The map page can also be configured to display additional data fields and a graphic course devi- ation scale or compass. See page 26 for more on map options. Boat Icon Data Fields Map Scale

Working from the Map Page is a simple process that centers around the use of the cursor. Controlled by the R keypad, the cursor is an important tool that can be used to pan to other map locations, mark and edit waypoints and routes, and review position data of on-screen navaids and waypoints. To get a feel for using the Map Page and using the cursor, try the following exercise: 1. Use the C key to set the map scale to the 64 nm setting. Your boat should be near the center of the map, at the receiver’s last known position (if your boat isn’t where it should be, make sure that you have initialized the receiver and acquired a position as described on pages 1-2). 2. Use the DOWN arrow of the R keypad to move the cursor down to the first lat/lon grid south of your boat’s position. 3. Using the R keypad to move the cursor, try following the outline of the lat/lon grid closest to your boat. Notice how another data field appears at the top of the page, showing the bearing and distance from your boat to the cursor, along with the lat/lon of the cursor. 4. Press the Q key to remove the cursor and recenter your boat on the map display. As you become more familiar with the cursor, you’ll see that the map display actively scrolls or “pans”, letting you explore areas around the world (even outside of your current G-chartTM coverage) and create waypoints and routes. Wherever you move the cursor, pressing Q once will return the map to your present position. Now that you have a feel for how the cursor works, let’s move on and see how the GPSMAP 180 works on the water. To help you practice using the Map Page and other features, we’ve stored a practice route in the receiver’s permanent memory, so you can see exactly what you’ll experience when you’re navigating with your new GPS chartplotter. 8 GETTING STARTED Using the Map Cursor A. Whenever the cursor is active, the bearing and distance of the cursor from your present position will appear in a pop-up data win- dow. B. To remove the cursor and recenter your ves- sel on the map, press the QUIT key.

GPS is all about marking positions as waypoints and navigating to them using the receiver’s steering guidance and map displays. We’ve already seen how to use the M key to store our present position, so it’s time to move on to the fun part— going to a destination. The G key, located on the left side of the keypad above the Q key, is the primary tool used to select a destination waypoint or a route to navigate. The G key can be used in three primary ways: • Pressing G once displays a list of all waypoints in memory, from which you can select a single destination waypoint. • Pressing G followed by the O key provides a list of GOTO options that lets you start a TracBackTM route, select a destination waypoint from the nearest waypoints list, select a stored route to navigate, or cancel the current GOTO destination. • Pressing G twice allows you to select an on-screen waypoint, navaid or cursor position as a destination directly from the map display. For our simulated trip, we’re going to select the preprogrammed tour route (the second method), which will automatically place our vessel at the first route waypoint. This will also give us an idea of how the O key is used throughout the GPSMAP 180 system to provide context-sensitive options and functions. Let’s give it a try by activating the practice route stored in memory for navigation: 1. Press G. The waypoint list page will appear (if we were selecting a single waypoint to navigate to rather than a route, we would highlight the waypoint and press T). 2. Press O to display the context-sensitive options available for the GOTO function. 3. Use the R keypad to highlight the ‘Select Route?’ option. Press T to confirm. 4. The select route page will appear, with the ‘GPSMAP TOUR’ route highlighted. 5. Press T. The Map Page will reappear and display five waypoints chained together in a simple route, with your boat at the first route waypoint. 9 GETTING STARTED Using the GOTO key A. Pressing GOTO once displays a list of all way- points stored in memory. To pick a destination, select the desired waypoint and press EDIT/ENTER. B. The GOTO options page allows you to either start a TracBack route back home, select a des- tination from the nearest waypoints list, or select a route to navigate.

the second route waypoint. To get started, let’s enter a speed for our vessel, which we can do from the ‘Setup Simulator?’ listing on the options page. The setup sim- ulator page is also available from any other page in the main page sequence. To enter a boat speed: 1. Press the O key to display the map options page. 2. Use the R keypad to select the ‘Setup Simulator?’ option and press T. 3. Once the setup simulator page appears, press T to access the SOG field. 4. Use the R keypad to enter a speed of 60 knots. 5. Press T to finish, and J to return to the map display. Once a speed has been entered, you’ll notice that the map will begin to move slowly, keeping your boat centered on the display. To get a better view of what’s going on, zoom in to a closer map scale. 1. Press the C key to select the 16 nm scale. You’ll now have a clearer picture of the route we are navigating, along with an outline-only presentation of the surrounding shoreline. Because the usable range of the built-in database is only valid to 64 nm scale, we no longer have full cartog- raphy available. Keep in mind that whenever you do exceed the usable range of the built-in database or the Micro G-chart cartridge in use, the range field will dis- play ‘OVR ZM’ or ‘NO MAP’ to indicate that you should exercise extreme caution using the cartography data. See page 25 and 66 for more information on map scales and using Micro G-chart detailed cartography. Now that we’re zoomed in a little closer to our route, we can pan ahead of our vessel with the cursor to review and create on-screen waypoints and navaids. Try moving the cursor to select the ‘TOUR3’ waypoint— just use the R keypad to move the cursor as close as possible to the waypoint (to move the cursor in small increments, try a series of short key presses). 10 GETTING STARTED Simulator Setup & Map Scales A. To enter a boat speed or define the simulated course, highlight the ‘Setup Simulator?’ option and press EDIT/ENTER. B. Enter a boat speed of 60 knots to begin the tour. This will allow you to complete the Getting- Started Tour in 10-15 minutes.

symbol and name will become highlighted, and the data field at the top of the page will display the waypoint name, the range and bearing from your present position, and the coordinates for the waypoint. To review the waypoint page for a selected waypoint: 1. Press the T key. 2. To return to the Map Page, press T again. The cursor can also be used to create new waypoints right from the map display. To create a new waypoint using the cursor: 1. Use the R keypad to move the cursor as close as possible to the following position: N 35º 02.129’; W 076º 26.106’ (use the data window to verify the cursor position). 2. Press the T key to capture the cursor position. 3. Use the R key to highlight the waypoint symbol field. 4. Press T to access the symbol page. 5. Press the DOWN arrow of the R keypad twice to select the wreck symbol. 6. Press T to confirm, and T again to finish. 11 GETTING STARTED Reviewing & Creating Waypoints on the Map A. Waypoints can be created from the map display by moving the cursor to the desired position and pressing the EDIT/ENTER key. B. The create new waypoint page will automatical- ly assign the next available three-digit number as the default waypoint name. If you are creat- ing a waypoint at an on-screen navaid, the navaid icon and name will be used as the default symbol and comment.

page of the GPSMAP 180 system, the Navigation Page: 1. Press the J key. The Navigation Page provides graphic steering guidance to your destination. The bearing (BRG) and distance (DIS) to the destination, with your current course (COG) and speed over ground (SOG), are displayed at the top of the page, along with a graphic compass to indicate your cardinal heading. The estimated time enroute (ETE) and velocity made good (VMG, or the rate you are closing in on your destination) are displayed at the bottom of the page. As you head toward the destination, the middle section of the page gives you visual guidance to your waypoint on a graphic highway, which displays the route and nearby waypoints on screen. The moving arrow below the highway always points to the destination waypoint relative to the direction you’re moving. The line down the center of the highway represents your desired track, while the bot- tom of the page provides a graphic indication of your crosstrack error (the dis- tance and direction you are off course) according to the scale at the bottom right of the page. 12 GETTING STARTED Navigation Page A. In this example, our boat is off course to the left by about 1/16th of a mile (the base of the highway map is equal to the scale selected at the bottom right of the page). To get back on course, steer right. B. In this example, our boat is off course to the right. To get back on course, steer left. A digi- tal readout of your exact crosstrack error can be displayed in any of the six data fields (see page 29). Data Fields CDI Scale Graphic Highway Graphic Compass Tape Pointer to Waypoint

Whenever the GPSMAP 180 is in simulator mode, you can adjust your speed and course from the Navigation Page using the R keypad. As you head toward each waypoint in the tour route, try adjusting your boat speed and course to get a feel for how the highway works. To adjust the simulated boat speed: 1. Press the UP arrow of the R keypad to increase the speed in 5 knot/kph/mph incre- ments. Press the DOWN arrow to decrease the speed in the same increments. To steer the boat: 1. Press the LEFT and RIGHT arrows of the R keypad. Notice that as you get off course, the highway and waypoint pointer move to give you graphic guidance to get back on course. The base of the highway display also serves as a graphic course deviation indicator (CDI), relative to the scale set- ting shown at the bottom right of the page. The scale setting represents the total distance (or the width) of the base of the highway display. The default graphic highway setting is 1/4 nm, but can be set for a 1/2-, 1-, 2- or 4-nm range. To change the highway scale display: 1. Press the C or D key (ZOOM OUT to increase, ZOOM IN to decrease the scale). The Navigation Page data fields may also be configured to display any of ten different navigation values. Let’s change the VMG field to crosstrack error to pro- vide a digital readout of the distance we’re off course. To change a data field: 1. Press the O key to display the Navigation Page options. 2. Highlight the ‘Change Data Fields?’ option and press T. The field highlight will now appear in the top-left data field (the BRG field). 3. Use the R keypad to move the field highlight to the VMG field and press T. 4. Highlight the ‘XTE’ option and press T, and press Q to finish. A. To reset the simulator to steer the desired course automatically, select the ‘Auto COG’ set- ting from the options page. B. The highway scale can be set to a 1/4-, 1/2-, 1-, 2-, or 4-nm/mi/km range with the ZOOM keys.

which appears in the main page sequence whenever you are navigating a route: 1. Press the J key. The active route page shows each waypoint of the active route in sequence, with the waypoint name, distance and estimated time enroute to each waypoint displayed. As you navigate the route, the active route list will be automatically updated, indicating the next destination waypoint. The active route page also provides quick access to many route activation, edit- ing and copying functions you’ll use most often, like inverting and deactivating the active route. Let’s go ahead and deactivate the active route. To deactivate the active route and stop navigation: 1. Press the O key. 2. Highlight the ‘Deactivate Route?’ option. 3. Press T to confirm. To reset the boat speed to zero: 1. Press the O key. 2. Highlight the ‘Setup Simulator?’ option. 3. Press T. 4. Press T to access the SOG field. 5. Press the LEFT arrow of the R keypad to clear the speed entry. 6. Press T. GETTING STARTED Active Route & Main Menu Page A. To stop navigating the active route, select the ‘Deactivate Route?’ option and press EDIT/ENTER. B. Use the left arrow key to clear the SOG field and press EDIT/ENTER to confirm.

navigation and map information. The last page we’ll cover in the tour is the main menu page, which provides access to the GPSMAP 180’s waypoint, route and planning functions, as well as various operational and navigation setup features. The Main Menu is available from any page, and is accessed through the O key. To access the Main Menu Page: 1. Press the O key twice. The Main Menu Page’s 11 submenus are divided into categories by function. You can select a particular submenu by simply highlighting the desired option and pressing T. To get a feel for how the Main Menu Page works, let’s clear out the track log we’ve created during our simulated tour. This will ensure that you have a clean slate once you start navigating in your home waters. To select the track submenu: 1. Highlight the ‘Track’ menu option and press T. The track log page allows you to specify whether to record a track plot and define how it is recorded. It also provides both an indicator of the total memory used and the individual functions to clear the track log and start a TracBack route. To delete the track log: 1. Highlight the ‘Delete Track’ option and press T. A confirmation page will appear. 2. Highlight the ‘Yes’ prompt and press T to confirm. 3. Press J to return to the main page sequence. Congratulations! You’ve now gone through the basic operation of the GARMIN GPSMAP 180. Your new digital chartplotter is a powerful tool with many advanced features not covered in the Getting-Started Tour. For detailed instruc- tions on using these features or performing a specific task, please refer to the quick reference guide or the appropriate reference section of this manual. A. The GPSMAP 180’s track page lets you clear the track log and start a TracBack route. B. To delete the track log, confirm the warning page by highlighting the ‘YES’ prompt and pressing EDIT/ENTER. 15 GETTING STARTED Track Submenu & Clearing the Track Log

1. Press and hold the P key for about 3 seconds, until the screen is blank. Thank you for choosing the GARMIN GPSMAP 180 navigation system. We hope that it will be a useful tool for you wherever you travel. 16 GETTING STARTED Power Off

functions, including current satellite coverage, receiver operating mode and cur- rent receiver accuracy. The status information will give you an idea of what the receiver is doing at any given moment. 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. The signal strength is shown on a bar graph for each satellite, with the satellite number below. When a satellite is visible but not being tracked, the strength bar will not be shown and the sky view indicator will not be highlighted. The sky view shows a bird’s-eye view of the position of each satellite relative to the receiver’s last known position. The outer circle represents the horizon (track up), the inner circle is 45º above the horizon, and the center point is a position directly overhead. Use the sky view to determine if there are obstructions shading your reception of GPS signals. 17 SECTION1 SATELLITE PAGE Overview A. Whenever the GPSMAP 180 is searching for satellites, no signal strength bars will appear. B. Once the receiver has found the satellite(s) indi- cated, a hollow signal strength bar will appear. After satellite data has been collected, the signal strength bars will become solid. Status Field Horizontal Accuracy Satellite Sky View Signal Strength Indicators Status Bar Dilution of Precision

Receiver status is indicated at the top of the page, with the current estimated position error (EPE) and dilution of precision (DOP) to the left of the sky view. DOP is an indication of satellite geometry quality measured on a scale of one to ten (lowest numbers the best, highest numbers the poorest). EPE uses DOP and other factors to calculate a horizontal position error in feet or meters. The status field will show one of the following conditions: • Searching the Sky— the receiver is looking for any satellites. • AutoLocate— the receiver is is looking for any satellite whose almanac has been col- lected. This process can take up to five minutes. • Acquiring Satellites— the receiver is looking for and collecting data from satellites vis- ible at its last known or initialized position, but has not collected enough data to cal- culate fix. • 2D Navigation— at least three satellites with good geometry have been acquired and a 2 dimensional position fix (latitude and longitude) is being calculated. ‘2D Differential Navigation’ will appear when you are receiving DGPS corrections in 2D mode. • 3D Navigation— at least four satellites with good geometry have been acquired and your position is now being calculated in latitude, longitude and altitude. ‘3D Differential Navigation’ will appear when you are receiving DGPS corrections in 3D mode. • Poor GPS Coverage— the receiver is no longer tracking enough satellites for a 2D or 3D fix. • Receiver Not Usable— the receiver is unusable, possibly due to incorrect initialization or abnormal satellite conditions. Turn the unit off and back on to reset. • Simulating Navigation— the receiver is in simulator mode. 18 A. The status bar at the bottom of the page dis- plays important status, alarm, and map scale information. It also provides on-screen user and message prompts. B. The status bar will display an anchor symbol or ‘PRX’ icon whenever the anchor drag alarm or proximity alarm has been triggered. SECTION1 SATELLITE PAGE Receiver Status

The GPSMAP 180’s Satellite Page features a context-sensitive options page that provides access to functions and features relating to the Satellite Page. To display the Satellite Page options: 1. Press O. To select a menu option: 1. Highlight the desired option and press T. The following options are available: • Initialize Position?— allows you to initialize the receiver on map or by text. See pages 1-2 for instructions on initialization. • Start AutoLocate?— allows the receiver to locate your position automatically. • Track Up/North Up SkyView?— allows you to select between a north up or track up sky view display. • Setup Simulator?— allows you to define speed, course, and position values while in simulator mode. See the Getting-Started Tour for more on using simulator mode. 19 A. Whenever the GPSMAP 180 is in simulator mode, the ‘Setup Simulator?’ option will appear on all the main pages. B. The setup simulator page allows you to define your speed and course over ground, as well as your position and altitude. The ‘Auto COG’ option will automatically steer the desired course to your destination. Your speed and course can also be selected from the Navigation Page using the rocker keypad (see page 13). SECTION1 SATELLITE PAGE Satellite Page Options

are heading and how fast you are going. The top of the page features a graphic compass tape to indicate the direction you’re heading (while you’re moving), and four user selectable data fields: course over ground (COG), speed over ground (SOG), distance traveled (TRP) and altitude (ALT). The bottom half of the page displays your present position’s coordinates, along with the time of day as calcu- lated using GPS satellites. The status bar at the bottom of the page indicates posi- tion fix status, and is described in detail on page 18. The units of measure for speed, distance, position, and altitude are all user- selectable through the navigation setup option on the Main Menu Page. The time of day, shown in UTC (Universal Time Coordinated, or Greenwich Mean Time) may be set to display in a 12- or 24-hour time format (with a local offset) through the system setup option on the Main Menu Page. 20 The trip odometer can be reset from the Position Page options window. To reset the odometer, select the ‘Reset Trip Distance?’ option and press EDIT/ENTER. SECTION2 POSITION PAGE Overview Graphic Compass Tape Data Fields Position Coordinates Time of Day Status Bar

The GPSMAP 180’s Position Page features a context-sensitive options page that provides access to functions and features relating to the Position Page. To display the Position Page options: 1. Press O. To select a menu option: 1. Highlight the desired option and press T. The following options are available: • Reset Trip Distance?— resets the trip odometer (TRP) field to zero. • Change Data Fields?— allows you to choose the data displayed in the four user- selectable data fields. Five data types are available: • SOG— speed over ground • COG— course over ground • TRP— distance traveled • ALT— altitude • VDC— DC voltage To change a data field: 1. Highlight the ‘Change Data Fields?’ option and press T. 2. Move the field highlight to the field you want to change and press T. 3. Select the desired data field option and press T. • Restore Defaults?— resets all data fields to the factory settings. • Setup Simulator?— allows you to define speed, course and position values while in simulator mode. See the Getting-Started Tour for more on using simulator mode. 21 A. The four data fields at the top of the position page can be changed by selecting the ‘Change Data Fields?’ option. B. Each data field can be set to display speed over ground, course over ground, distance traveled, altitude, or DC voltage. SECTION2 POSITION PAGE Position Page Options

The GPSMAP 180’s Map Page provides a comprehensive display of electronic cartography, plotting and navigational data. The map display shows your boat on a digital chart, complete with geographic names, navaids, depth contours and a host of other chart features. It also plots your track and displays any routes and waypoints you create. An on-screen cursor lets you pan and scroll to other map areas, determine the distance and bearing to a position, and perform various route and waypoint functions. The data window, located at the top of the page, provides a user-selectable dis- play of your current course and speed over ground, along with the bearing and distance to a destination waypoint. Whenever the cursor is active, an additional data window will appear below to indicate the position, range and bearing to the cursor or a selected waypoint or navaid. Each data field may be configured to dis- play any one of ten data options. The data window may also be changed to dis- play additional data fields, a graphic compass tape, or a CDI scale. The status bar at the bottom of the page displays the map scale currently in use. 22 A. Use the cursor to pan ahead to other map areas. The map display will automatically scroll forward when you reach the edge of the map. B. To select or “highlight” an on-screen navaid or waypoint, simply move the cursor over the waypoint symbol. The cursor will “snap” to the waypoint, and display its name and posi- tion in the data field. SECTION3 MAP PAGE Overview Boat Icon Data Window Map Scale Status Bar

map display functions. The C and D keys, combined with the R keypad, let you select zoom ranges and move the cursor. Two basic map operating modes, position mode and cursor mode, determine what cartography is shown on the map display. Position mode pans the cartography to keep the present position marker within the display area, while cursor mode pans the cartography to keep the cursor within the display area. The GPSMAP system will always power up in the position mode, with your vessel centered on the map display. • Whenever sufficient map coverage is not available to keep the boat cen- tered, the boat icon will move toward the edge of the display. • If the boat icon attempts to go off the display, the zoom level may need to be adjusted to keep cartography on screen. Whenever the R keypad is pressed, the GPSMAP 180 will enter cursor mode. In cursor mode: • The cursor can be moved over the map display using the R keypad. • Whenever the cursor reaches the edge of the display, the map will scroll forward under the cursor. Keep in mind that the boat icon will move with the map scrolling and may go off the display screen (you may not be able to see your present position). • When the cursor is stationary, a fixed coordinate position will appear in the position field. Note that the distance and bearing will change as the boat’s position changes. • Whenever you zoom in cursor mode, the cursor will be centered on screen. • To return to position mode, press the Q key. 23 A. Position mode on inland water cartography. B. Cursor mode on inland water cartography. SECTION3 MAP PAGE Map Modes

The cursor allows you to pan away from your present position and scroll to other map areas around the world (even outside of your current Micro G- chart TM coverage). As you pan past the edge of the current map display, the screen will actively scroll forward to provide continuous map coverage. To move the cursor: 1. Press the R keypad to move the cursor in an up, down, left, or right direction. As you move the cursor, the distance and bearing from your present position to the cursor will be displayed in the data window, along with the cursor’s position coordinates. Keep in mind that when the cursor is stationary, the distance and bearing from your present position will change as your boat moves. The cursor may also be used to “snap” to on-screen waypoints and navaids, allowing you to review a selected position directly from the map display. To select an on-screen waypoint or navaid with the cursor: 1. Use the R keypad to move the cursor to the desired waypoint or navaid (if there are several waypoints grouped closely together, zoom in closer for a better view). 2. When a waypoint or navaid is selected, it will become highlighted on screen, with the name and position displayed. To eliminate the cursor and re-center your position on-screen: 1. Press the Q key. The cursor may also be used to create new waypoints directly from the map. To create a waypoint with the cursor: 1. Use the R keypad to move the cursor to the desired map position. 2. Press T. 3. Press T to confirm the new waypoint. 24 A. To create a new waypoint at the cursor, move the cursor to the desired position and press EDIT/ENTER. B. The create new waypoint page will appear, where you may change the waypoint name, symbol, and comment before saving the way- point. SECTION3 MAP PAGE Using the Cursor

The map display has 16 available range scales from 1/8th to 4096 n.m. (1/4 to 7500km). The map scale is controlled by the C and D keys, with the current scale displayed at the bottom of the data window. To select a map scale: 1. Press the D key to zoom out and the C key to zoom in. The GPSMAP 180’s system has a built-in worldwide database to 64 n.m.(see Appendix D for a built-in coverage map), with more detailed coverage available through the use of Micro G-chart TM data cartridges (see Section 10 for installing and using Micro G-chart TM cartridges). The GPSMAP 180 will display cartography as long as there is chart information available for the range you’ve selected. Map coverage will conform to the following conditions: • When the selected zoom range is covered by either the internal database or a Micro G-chart data cartridge, cartography will be displayed. • When the selected zoom range is covered by both the internal database and a Micro G-chart cartridge, cartography will be displayed using the data with the best res- olution. • When the selected zoom range exceeds the resolution of the chart in use by up to two settings, overzoom cartography will be displayed. The display will not show any filled landmass areas, and an ‘Ovr Zm’ warning will appear in the scale field. The lat/lon grid will also be turned on regardless of the map configuration setting. • When the selected zoom range exceeds the resolution of the chart in use by more than two settings, all cartography will be replaced by a track plot display, and a ‘No Map’ warning will appear in the scale field. The lat/lon grid will be displayed regardless of the map configuration setting. Additional caution should be used while navigating in track plot mode. A B 25 A. Whenever the selected map scale exceeds the resolution of the chart by up to two settings, an ‘Ovr Zm’ warning will appear in the scale field. B. Whenever the selected map scale exceeds the resolution of the chart by more than two set- tings, a ‘No Map’ warning will appear in the scale field. SECTION3 MAP PAGE Selecting Map Scales

The GPSMAP 180 Map Page is designed to be a flexible tool that can be cus- tom-tailored to your exact navigation needs. The map options page provides access to many of the features and functions that will help you configure the Map Page to your own preferences. To display the Map Page options: 1. Press O. To select a menu option: 1. Highlight the desired option and press T. The following options are available: • Maximize/Normal Map?— allows you to select between a full-screen map display or the default map display with data window. • Map Outlines Off/On?— allows you to specify whether coverage outlines for Micro G-chart cartography are displayed or not. The default setting is on. • Measure BRG/DIS?— allows you to measure the bearing and distance between any two points on the map display. To measure the BRG/DIS between two points: 1. Highlight the ‘Measure BRG/DIS?’ option and press T. An on- screen pointer will appear on the map display at your present position. 2. Move the cursor to the desired reference point (the point that you want to measure from) and press T. 3. Move the cursor to the point that you want to measure to. The bearing and distance from the reference point will be displayed at the bottom left of the data window. 4. Press the Q key to finish. 26 A. The map options page provides access to all map configuration, page display, and data field options. B. The ‘Maximize Map?’ option will eliminate the data fields and show full-screen cartogra- phy. SECTION3 MAP PAGE Map Page Options

a particular map scale to prevent excessive clutter. The map configuration page fea- tures an on/off grid with a list of chart features down the left side. The zoom scales are displayed across the top of the grid with the chart scale currently in use also indicated. The far-left scale setting represents all map scales 64 nm and above. A check mark in a grid box indicates that the chart feature listed will be displayed at the corresponding scale. Individual grid boxes may be turned on and off through a popup scale window, while entire rows may be controlled by using the map configuration options page (accessible through the O key). To use the map configuration grid: 1. Use the R keypad to select the desired map item and press T. A popup window will appear with the current settings displayed. 2. Use the R keypad to highlight the scale you want to change. 3. Press T to change the on/off setting. 4. Press Q to finish. To turn an entire row on or off: 1. Use the R keypad to select the desired map item. 2. Press the O key. 3. Select the ‘Enable Row?’ or ‘Disable Row?’ option and press T. The map configuration page also allows you to set the moving map display to a North Up, Track Up, or Desired Track Up orientation. To change the map orientation: 1. Use the R keypad to highlight the ‘Orientation’ field and press T. 2. Select the desired setting and press T. 27 A. The map configuration grid allows you to define what items appear on the display at each map scale. B. To turn an entire row on for the selected map item, highlight the ‘Enable Row?’ option and press EDIT/ENTER. SECTION3 MAP PAGE Map Configuration

allows you to calibrate the map display your exact physical surroundings or to cor- rect data from older charts. Before using the map calibration function, check to make sure that your map datum selected on the GPS matches the datum on the chart you are using (see page 61). To calibrate the map display, you must know exactly where you are, and understand that the correction is generally valid only in a limited range from the point of correction. Map calibration should only be performed while the vessel is not moving, and should never be used to attempt SA corrections, which can degrade accuracy up to 330’ (100 meters). The maximum correction is 16,400 feet (5000m). To calibrate the map: 1. Select the ‘Calibrate the Map?’ option and press T. 2. Use the R keypad to move the arrow cursor from the satellite position (indicated by the satellite icon) to your exact position. The bearing, distance, and position will be indicated in the data window. 3. Press T to confirm the calibration offset. The next option available from the map configuration page is the set map colors option, which allows you to define the fill color (grayscale) of the land and water used on the map display. Three options are available: no color (no fills for land or water), gray land/white water (the default setting), and white land/gray water. To select a map colors option: 1. Select the ‘Set Map Colors?’ option and press T. 2. Highlight the desired map color option and press T. The map configuration options page also features a ‘restore defaults’ function that can be used to quickly restore all map configuration options to the factory settings. To restore the map configuration options to the factory defaults: 1. Highlight the ‘Restore Defaults?’ settings and press T. 28 A. To calibrate the map, highlight the ‘Calibrate the Map?’ option and press EDIT/ENTER. B. A satellite icon will remain on the map to indicate the GPS position, while the boat marker will move to reflect the calibration changes. CAUTION! The map calibration function should never be used to attempt correcting for Selective Availability errors. SECTION3 MAP PAGE Map Configuration & Map Colors

data window section of the map page. A graphic compass tape or CDI scale may also be displayed. The following options are available: • 2 Fields • 2 Fields & Compass • 2 Fields & CDI • 4 Fields • 4 Fields & Compass • 4 Fields & CDI • 6 Fields • 6 Fields & Compass • 6 Fields & CDI • 8 Fields To select a page display option: 1. Highlight the ‘Setup Page Display?’ option and press T. 2. Select the desired option and press T. • Change Data Fields?— allows you to specify the data displayed in each data field used on the map display. The following options are available: • BRG- bearing to active wpt • DIS- distance to active wpt • SOG- speed over ground • COG- course over ground • ETE- estimated time enroute • ETA- estimated time of arrival • XTK- crosstrack error • VMG- velocity made good • TRN- turn angle to wpt • WPT- active wpt name To change a data field: 1. Highlight the ‘Change Data Fields?’ option and press T. 2. Move the field highlight to the desired field and press T. 3. Select a data field option and press T. • Restore Defaults?— resets all map page options (except map configuration options, see pages 27-28) to the factory settings. • Setup Simulator?— allows you to define speed, course, and position values while in simulator mode. See the Getting-Started Tour for more on using simulator mode. 29 A. The map page can be configured to display a variety of navigation data. B. Each data field can be set to display one of ten data options. SECTION3 MAP PAGE Page Display & Data Fields

Whenever a GOTO, MOB, TracBack or route has been activated, the GPSMAP 180 will provide digital and graphic steering guidance to the destination with the Navigation Page. The top half of the nav page features four user-selectable data fields that display the bearing (BRG) and distance (DIS) to waypoint, along with your current course (COG) and speed over ground (SOG). In addition, there’s a moving compass tape to indicate the direction you’re heading. Two additional data fields at the bottom of the page show the estimated time enroute (ETE) and velocity made good (VMG) to your destination. The middle section of the screen provides visual guidance to the waypoint on a graphic highway display. The line down the center of the highway represents your desired track, while a graphic indication of the distance and direction you are off course is shown on a scale at the bottom right of the page (the selected scale rep- resents the distance from side to side). The arrow pointer below the highway always points to the destination waypoint relative to the direction you are moving. 30 The Navigation Page can be configured to show the active waypoint, all route waypoints and/or nearby waypoints on the graphic highway. SECTION4 NAVIGATION PAGE Overview Data Fields CDI Scale Graphic Highway Graphic Compass Tape Pointer to Waypoint

progress to the waypoint and which direction you should steer to stay on course. If you are navigating a route, the Navigation Page will show each route waypoint in sequence, with the active leg indicated by the white portion of the highway. Nearby waypoints not in the active route will also be displayed. The highway scale may also be zoomed in or out to display a larger or smaller view of the high- way. Five scales are available from 1/4 to 4 nm, with a default setting of 1/4 nm. To change the highway scale: 1. Press the C or D key to select the desired setting. Navigation Page Options The GPSMAP 180’s navigation options page allows you to define the nav data fields and select what waypoints are displayed on screen. To display the Navigation Page options: 1. Press O. To select a menu option: 1. Highlight the desired option and press T. 31 A. To change the highway scale, press the IN and OUT keys. B. The navigation options page lets you set up the Navigation Page to your own preferences. SECTION4 NAVIGATION PAGE Highway Scale & Nav Page Options

• Change Data Fields?— allows you to define the data displayed in any of the six user-selectable data fields. Ten data options are available: • BRG– bearing to active wpt • DIS– distance to active wpt • SOG– speed over ground • COG– course over ground • ETE– estimated time enroute • ETA– estimated time of arrival • XTK– crosstrack error • VMG– velocity made good • TRN– turn angle to wpt • CTS– course to steer To change a data field: 1. Highlight the ‘Change Data Fields?’ option and press T. 2. Highlight the field you want to change and press T. 3. Select the desired data field option and press T. • Configure Highway?— allows you to select what waypoints are shown on the high- way display. Four options are available: • Nav & Nearest Waypoints— all route and nearest waypoints displayed • Nav Waypoints— only waypoints in the active route will be displayed • Active Waypoint— only the active waypoint will be displayed • No Waypoints— no waypoints will be displayed To configure the highway display: 1. Highlight the ‘Configure Highway?’ option and press T. 2. Select the desired option and press T. • Restore Defaults?— resets all navigation page options to the factory settings. • Setup Simulator?— allows you to define speed, course, and position values while in simulator mode. See pages 4-16 for more details on using simulator mode. • Auto COG?— allows you to reset automatic steering while simulating navigation and cancel any course adjustments made with the R keypad. 32 A. Ten data options are available for each data field on the Navigation Page. The digital crosstrack error option is especially useful to display the exact distance you are off course in feet/miles or meters. B. To select what waypoints appear on the graphic highway, highlight the desired setting and press EDIT/ENTER. SECTION4 NAVIGATION PAGE Nav Page Options

The GPSMAP 180’s Main Menu Page provides access to various waypoint, sys- tem, navigation, and interface management and setup menus. The Main Menu Page is available from any page in the GPSMAP 180’s system, and is accessed through the O key. To access the Main Menu Page: 1. Press O twice. The 11 submenus are divided into categories by function. To select a submenu from the Main Menu Page: 1. Highlight the submenu you want to view and press T. For specific instructions on using a submenu, see the waypoints, route, or setup sections of this manual. Creating and Using Waypoints 33 A. The waypoint category options on the Menu Page are described in the ‘Waypoints’ section on pages 34-42. B. The routes category options are described on pages 47-54. SECTION5 MAIN MENU PAGE Overview

user-defined icon and comment available for each waypoint. Waypoints can be created using three basic methods: • M key– used primarily for marking your present position, the M key also provides options that allow you to select a map or navaid position from the map display. • On Map– allows you to define a new waypoint position from the map dis- play using the cursor. • Text Entry– allows you to enter a new waypoint’s position coordinates manually (from a chart, etc.) or by referencing it’s bearing and distance from a stored waypoint or your present position. Mark Key The GARMIN GPSMAP 180’s M key lets you quickly capture your present position— or cursor or navaid position— in order to create a new waypoint. You must have a valid position fix to mark your present position. To mark your present position: 1. Press the M key. The mark position page will appear, with a default three-digit name for the new waypoint. 2. To accept the waypoint with the default name, symbol and comment (the date and time of creation), press T to confirm the ‘Done?’ prompt. 3. To enter a different name, symbol or comment, highlight the appropriate field and press the T key. 4. After entering and confirming your changes, move the field highlight back to the ‘Done?’ prompt and press T. 34 A. The MARK key is used primarily to mark your present position, but it can also be used to mark the cursor or a navaid position from the map page. B. The mark position page also allows you to add the new waypoint to the end of any route. If you’re heading out without a planned route, you can create a series of way- points along the way with the mark key and save them to an open storage route. When you’re ready to head back, simply invert the route to get back (see page 51). SECTION6 WAYPOINTS Creating Waypoints & MARK Key

an on-screen navaid. To mark a navaid, select the desired navaid with the cursor. The GPSMAP 180 will use the navaid text shown on the cartography as the default comment. To mark the cursor or navaid position with the M key: 1. Use the R keypad to move the cursor to the desired position or navaid. 2. Press the M key. 3. Highlight the ‘Use Map Posn?’ or the ‘Use NAVAID Posn?’ option and press T. 4. To accept the waypoint with the default name, symbol, and comment (the date and time of creation), press T to confirm the ‘Done?’ prompt. 5. To enter a different name, symbol or comment, highlight the appropriate field and press the T key. 6. After entering and confirming your changes, move the field highlight back to the ‘Done?’ prompt and press T. 35 A. To create a waypoint at an on-screen navaid, move the cursor over the desired navaid. B. Press the MARK key and select the ‘Use Navaid Posn?’ option. Press EDIT/ENTER to finish. SECTION6 WAYPOINTS Using the MARK Key Waypoint Name Field Waypoint Symbol Field Waypoint Comment Field

Waypoints may also be quickly created from the map display, which allows you to “point and shoot” at any map position to create a new waypoint. To create a new waypoint on map: 1. Use the R keypad to move the cursor to the desired map position. If you want to create the new waypoint at an on-screen navaid, highlight the navaid on the map display. 2. Press T. 3. To accept the waypoint with the default name, symbol and comment, press T. If you are creating a waypoint at an on-screen navaid, the default symbol and comment will automatically reflect the selected navaid’s name and symbol. 4. To change the name, symbol or comment, highlight the appropriate field and press T. 5. After entering and confirming your changes, move the field highlight back to the ‘Done?’ prompt and press T. Creating Waypoints By Text Entry Waypoints may also be created by manually entering a position’s coordinates or referencing a stored waypoint through the ‘Create Waypoint’ submenu option on the Main Menu Page. To create a new waypoint by manually entering its coordinates: 1. Press O twice to display the Main Menu Page. 2. Highlight the ‘Create Waypoint’ option and press T. The waypoint definition page will appear, with the next available waypoint number and the receiver’s last known position as the default name and position. 3. Use the R keypad to enter the new waypoint name, icon, position, and comment. Press T after the last character in each section. 4. When you have finished entering all your waypoint data, use the R keypad to highlight the ‘Done’ prompt and press T. 36 A. Once a position has been selected on map, the create new waypoint page will appear. Here you can change the waypoint name, symbol or comment before saving the way- point. B. To create a waypoint by text entry, start by entering the new waypoint’s name. SECTION6 WAYPOINTS Creating Waypoints On Map & By Text

entering its range and bearing from an existing waypoint or your present position. The GPSMAP 180 will then calculate the position coordinates for you, using the reference selected. To create a new waypoint using a reference waypoint: 1. Select the ‘Create Waypoint’ option from the Main Menu Page and press T. 2. Enter the name, icon, and comment for the new waypoint. 3. Highlight the reference waypoint field and press T. 4. Enter the name of the reference waypoint using the R keypad, or press O to select the waypoint from the nearest list, waypoint list, or map display. Leave the reference field blank to use your present position. 5. Press T to begin entry of the bearing from your reference waypoint to the new waypoint position. Enter the bearing and press T. 6. Press T to begin entry of the distance from your reference waypoint to the new waypoint position. Enter the distance and press T. The position for the new waypoint will automatically be calculated. 7. Highlight the ‘Done’ prompt and press T to finish. 37 A. Enter the bearing from the reference waypoint to the new waypoint in the ‘BRG’ field. B. Enter the distance from the reference waypoint to the new waypoint in the ‘DIS’ field. SECTION6 WAYPOINTS Creating a Waypoint by Reference

Once you have created and stored a waypoint, it may be modified, reviewed, renamed, or deleted at any time through the waypoint definition page. The way- point definition page is available for any stored waypoint by highlighting the desired waypoint from the map display or selecting it from any waypoint list and pressing the T key. To access the waypoint definition page: 1. Use the R keypad to highlight the desired waypoint on the map display (or any waypoint list). 2. Press T to display the waypoint definition page. From the waypoint definition page, you may change the waypoint symbol, position coordinates, or the waypoint comment for the selected waypoint. To change the waypoint symbol: 1. Highlight the waypoint symbol field and press T. 2. Use the R keypad to select the desired symbol and press T to confirm. To change the position coordinates: 1. Highlight the coordinates field and press T. 2. Use the R keypad to edit the coordinates and press T to confirm. To change the waypoint comment: 1. Highlight the comment field and press T. 2. Use the LEFT arrow of the R keypad to clear the comment field. 3. Use the R keypad to enter a comment (up to 16 characters). 4. Press T to confirm. 38 A. The waypoint definition page will appear whenever a waypoint is selected from the map or a waypoint list. B. A 20-character custom waypoint comment may be assigned to every waypoint. The default comment is the date and time of cre- ation. SECTION6 WAYPOINTS Reviewing & Editing Waypoints

The waypoint definition page also features an options page that allows you to edit the selected waypoint on the map display, rename the selected waypoint or delete the waypoint from memory. To display the waypoint definition page options: 1. Press the O key. To review/edit the selected waypoint from the map display: 1. Highlight the ‘Edit Wpt On Map?’ option and press T. 2. The selected waypoint will appear on the map display, with the waypoint name and coor- dinates shown at the top of the map, along with the distance and bearing to the waypoint from your present position. 3. To move the selected waypoint’s position, press T. A ‘MOVE’ label will now appear under the cursor arrow. 4. Use the R keypad to move the cursor arrow to the desired position. The cursor’s coordi- nates, along with the distance and bearing from the waypoint’s position, will be displayed at the top of the map display. 5. Press T to set the waypoint’s new position, and Q to return to the waypoint defini- tion page. To rename the selected waypoint: 1. Highlight the ‘Rename Waypoint?’ option and press T. 2. Enter the new waypoint name and press T. 3. Press T to confirm the ‘Yes’ prompt. To delete the selected waypoint: 1. Highlight the ‘Delete Waypoint?’ option and press T. 2. Press T to confirm. 39 A. To review or edit a waypoint on the map dis- play, select the ‘Edit Wpt On Map?’ option. B. To move the selected waypoint, press EDIT/ENTER. Use the arrow keypad to select the new position, and press EDIT/ENTER to finish. SECTION6 WAYPOINTS Waypoint Definition Page Options

you manage a large number of waypoints quickly and efficiently. The submenus also provide a continuously updated nearest waypoints list and a proximity way- point alarm function that can be used to define an alarm circle around submerged hazards, shallow waters, etc. To access the Main Menu Page waypoint submenus: 1. Press O twice. The first waypoint submenu is the nearest waypoints list, which shows the nine nearest waypoints that are within 100 miles of your present position. The nearest waypoints are continuously updated to your present position, and provide quick access to the closest points of safety in emergency situations. To scroll through and review the nearest waypoint list: 1. Highlight the ‘Nearest Waypoints’ option and press T. 2. Use the R keypad to scroll through the list in either direction. 3. Press T to review the highlighted waypoint. 4. To return to the waypoint list, highlight the ‘Done?’ prompt and press T. 5. The field highlight will automatically scroll to the next waypoint. If you want to review each waypoint, you can scroll through any waypoint list by pressing the T key repeatedly. To select a nearest waypoint as a GOTO destination: 1. Use the R key to select the desired GOTO waypoint. 2. Press G, followed by T. 40 A. The Menu Page features four waypoint submenus. B. The nearest waypoint list continuously updates to show the nine nearest waypoints to your present position. SECTION6 WAYPOINTS Waypoint Submenus & Nearest Waypoints

waypoint position, and can be used to help you avoid reefs, rocks, or restricted waters. Up to nine waypoints may be listed, with a maximum alarm radius of 99.99 nautical or statute miles or kilometers. If a proximity alarm circle overlaps with an existing alarm circle, a ‘Proximity Overlap’ message will appear each time the unit is turned on. If you enter an alarm circle overlap, you will only be alerted to the closest proximity waypoint. To enter a proximity waypoint: 1. Highlight the Proximity Waypoint option and press T. 2. Use the R key to highlight the first blank waypoint field and press T. 3. Enter the name of the proximity waypoint using the R keypad, or press O to select the waypoint from the nearest waypoint list, waypoint list, or map display. 4. Press T to confirm. The distance field will now be highlighted. 5. Press T to begin entry of the proximity radius. 6. Use the R keypad to enter a distance value (to 99.99 units) and press T. To turn proximity alarms on or off: 1. Use the R keypad to highlight the alarms on/off field and press T. 2. Select the desired setting and press T. To remove a proximity waypoint from the list: 1. Use the R keypad to highlight the waypoint to be removed. 2. Press O. 3. Highlight the ‘Clear Alarm?’ field and press T. 4. To clear all proximity waypoints, select the ‘Clear All’ option and press T. 41 A. Whenever you enter a proximity waypoint’s alarm circle, a ‘PRX’ indicator will appear in the status bar (the alarms option must be set to On’ position). Once you’ve left the alarm circle, the proximity indicator will automatically reset. B. To clear all proximity waypoints, select the ‘Clear All?’ option from the proximity options page. Finish the deletion by confirming the ‘Yes’ prompt. SECTION6 WAYPOINTS Proximity Waypoints

Waypoint’ submenu, which allows you to create a new waypoint by manually entering coordinates. Instructions for using the create waypoint submenu are pro- vided on page 36. Waypoint List The last waypoint category available from the Main Menu Page is the waypoints list, which displays a master list of all waypoints currently stored in memory. From the waypoints list, you may review, edit, rename, or delete individual waypoints; or delete all user waypoints. The total number of stored and available waypoints is displayed at the top of the waypoints page, with the stored waypoints arranged in numerical/alphabetical order and listed in two columns in the center of the page. To scroll through and review the waypoint list: 1. Highlight the ‘Waypoints’ option from the Main Menu Page and press T. 2. Use the R keypad to scroll through the list in the desired direction. 3. Press T to review the highlighted waypoint. 4. Press T to return to the list. To delete an individual waypoint from the list: 1. Use the R keypad to highlight the waypoint to be deleted and press O. 2. Press T. 3. Press the T key to confirm the deletion warning. To delete the entire waypoint list: 1. Press the O key to select the options window. 2. Highlight the ‘Delete All User Wpts?’ option and press T. 3. Use the R keypad to highlight the ‘YES’ prompt and press T to confirm. 42 A. The waypoints list displays all waypoints stored in memory in a two-column format. Temporary waypoints created by the TracBack feature are assigned a ‘TXXX’ name and a footprint symbol. B. The waypoints list options page lets you delete individual waypoints or the entire way- point list. SECTION6 WAYPOINTS Create Waypoint & Waypoint List

The GPSMAP 180 provides four ways to navigate to a destination: GOTO, MOB, TracBack and route navigation. The most basic method of selecting a desti- nation is the GOTO function, which lets you select a waypoint as your destination and quickly sets a direct course from your present position. The G key can be used in three ways: from a list of waypoints, directly from the map display and from a list of GOTO options. Pressing the G key once displays a list of all way- points in memory, from which you can select a single destination waypoint. To activate a GOTO from the waypoint list: 1. Press the G key. 2. Select a waypoint and press T. Selecting a GOTO On Map Pressing the G key twice allows you to graphically select an on-screen way- point, navaid, or cursor position as a destination. A graphical GOTO may be used to select one of three options from the map display: an existing waypoint, an on- screen navaid, or a cursor position. If you are selecting a navaid or a new position as the GOTO destination, the GPSMAP 180 will automatically create or move the waypoint named ‘MAP’ at the navaid or map position. To activate a GOTO from the map display: 1. Press the G key twice. 2. To select an existing user waypoint, highlight the waypoint on screen and press T. 3. To select a navaid, highlight the navaid on screen and press T. The ‘GOTO NEW WAYPOINT’ page will appear, displaying the navaid position as a ‘MAP’ waypoint, with the navaid symbol and text as the default icon and waypoint comment. Press T to save the waypoint and begin navigation. 4. To select a cursor position as your destination, move the arrow cursor to the desired position and press T. The ‘GOTO NEW WAYPOINT’ page will appear and display the position as the ‘MAP’ waypoint. Press T to save the waypoint and begin navigation. 43 A. Press GOTO once to select a destination from a list of waypoints. B. Press GOTO twice to select a destination way- point with the map cursor. If you are not selecting an existing waypoint as your destina- tion, a new waypoint named ‘MAP’ will be cre- ated. Keep in mind that the MAP waypoint will be overwritten for each MAP GOTO. This allows you to navigate to on-screen navaids without permanently storing the navaid as a waypoint. If you want to save the MAP way- point, rename it following the steps on page 39. SECTION7 GOTO/MOB Selecting a GOTO Destination

The GOTO options page provides a list of additional GOTO options that let you start a TracBack route, select a destination waypoint from the nearest way- points list, select a route to navigate, or cancel the current GOTO destination. To display the GOTO options: 1. Press O. To select a menu option: 1. Highlight the desired option and press T. The following options are available: • Start TracBack?— allows you to create and start navigation of a TracBack route back to the oldest track log point in memory (see pages 45-46 for more on using the TracBack function). • Show All Wpts?— displays the GOTO waypoint list. • Show Nearest Waypoints?— allows you to select the GOTO destination from a list of the nine nearest waypoints to your present position. To select a nearest waypoint as a GOTO destination: 1. Highlight the ‘Show Nearest Waypoints’ option and press T. 2. Select the desired waypoint and press T. • Select Route?— allows you to quickly select a stored route for navigation. To select a route to navigate: 1. Highlight the ‘Select Route’ option and press T. 2. Select the desired route and press T. • Cancel GOTO?— cancels the current GOTO destination and resumes navigation of any previously selected route. 44 A. The GOTO options page lets you start a TracBack route, select a destination from the nearest list, select a route to activate, or can- cel the current GOTO destination. B. The nearest waypoints list limits waypoint choices to provide quick access to nearby anchorages, facilities, etc. which are stored as waypoints. SECTION7 GOTO/MOB GOTO Options

mark and set a course to a position for quick response to emergency situations. To activate the MOB function: 1. Press the B key. 2. Press the T key to confirm and begin navigating to the MOB position. Once a MOB has been activated, a MOB icon will appear on the map display, and the destination field on the Map Page will display the bearing, distance, and ETE to the MOB position based on your present speed and course. To stop navigation to the MOB position: 1. Press the G key, followed by O, to display the GOTO options page. 2. Select the ‘Cancel GOTO’ option and press T. TracBack Navigation The third method of navigating to a destination is by using the GPSMAP 180’s TracBack feature. The TracBack function allows you to retrace your path using the track log automatically stored in the receiver’s memory, which will eliminate the need to store waypoints along the way. TracBack routes are created by reducing your track log into a route of up to 30 waypoints and activating an inverted route along those points. Once activated, a TracBack route will lead you back to the oldest track log point stored in memory, so it’s good idea to clear the existing track log at the start of your current trip (e.g., your dock) before you get started. To clear the track log and define a starting point for a TracBack route: 1. Press the O key twice to display the Main Menu Page. 2. Highlight the ‘Track’ option and press T. 3. Select the ‘Delete Track?’ option and press T. 4. Highlight the ‘Yes’ field and press T. 45 A. The GPSMAP 180’s MOB mode can be used to set a course to a passing spot for quick response to emergency situations, fish strikes, etc. B. To define a starting point for a TracBack route, clear the track log. SECTION7 GOTO/MOB MOB & TracBack Navigation

1. Press the G key, followed by the O key. 2. Highlight the ‘Start TracBack?’ option and press T. Once a TracBack has been activated, the GPSMAP 180 will take the track log currently stored in memory and divide it into segments called “legs”. Up to 30 temporary waypoints (e.g. T001) will be created to mark the most significant fea- tures of the track log in order 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 point that you want to go back to (dock, etc.). • The ‘RECORD’ option on the track log setup page must be set to ‘Fill’ or ‘Wrap’. • There must be at least two track log points stored in memory to create a TracBack route. • If there are not enough available waypoints in memory to create a TracBack route, you will be alerted with a ‘waypoint memory full’ message, and the receiver will use available waypoints to create a route with an emphasis on the track log closest to the destination. • If the track log interval is set to the ‘Time’ option, 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, the TracBack will draw a straight line between any point where coverage was lost and where it resumed. • If the changes of direction and distance of your track log are very complex, 30 waypoints may not accurately mark your exact path. The receiver will then assign the 30 waypoints to the most significant points of your track, and simplify segments with fewer changes in direction. • Whenever a TracBack route is activated, the receiver will automatically erase any tempo- rary waypoints (e.g., ‘T001’) that are not contained in routes 1-20. If there are temporary waypoints stored in routes 1-20, the receiver will create any new temporary waypoints using the first three-digit number available. 46 A. The TracBack feature uses your track log to create a route back to where you started. B. Once a TracBack is activated, the track log is divided into segments using temporary way- points, and an inverted route is activated back to the oldest track log point in memory. SECTION7 GOTO/MOB TracBack Navigation

GARMIN GPSMAP 180 system lets you create and store up to 20 reversible routes (numbered 1-20), with up to 30 waypoints each. Routes can be created and modi- fied right from the Map Page, allowing you to see each route on-screen as you cre- ate, review, modify, or navigate the route. All of the GPSMAP 180’s route func- tions are accessed through the main menu. To create a route on the map: 1. Press the O key twice to display the Main Menu Page. 2. Highlight the ‘Routes’ field and press T. The routes page will appear, showing all the routes currently stored in memory. 3. Press the O key to display the route options page. 4. Press T to select the ‘Create New Route’ option. The route edit page will appear, with the cursor displayed as an arrow pointer, and will allow you to select your route waypoints using one of two methods: 5. To add an existing waypoint or navaid to the route, use the arrow pointer to highlight the desired waypoint on screen and press T. 6. To add a new waypoint to the route, use the arrow pointer to select the desired map posi- tion and press T. Press T again to confirm the new waypoint. As you add each new waypoint to the route, the data window at the top of the map display will show the route number you are creating, along with the first and last route waypoints of the route. A route line will appear on the map to indicate each completed leg, and a dotted line will appear to indicate the distance and bearing to the arrow pointer from the last route waypoint. 7. Repeat steps 5 and 6 until you have finished defining all route waypoints. 8. Press Q to finish and enter review mode, or J to return to the main page sequence. 47 A. The route options page provides access to the GPSMAP 180’s route functions. B. Use the arrow pointer and EDIT/ENTER to add waypoints to the route. The create waypoint page will appear whenever you have selected a position that is not already stored as a way- point. SECTION8 ROUTES Creating a Route On Map

to finish), the map display will automatically enter the route review mode. The arrow pointer will be replaced by the map cursor, located at the last route way- point. The route edit mode allows you to review and modify the route displayed through a pop-up window menu for each waypoint. You may also use the cursor to select an individual route leg and insert a new route waypoint. To edit a route waypoint: 1. Use the cursor to highlight the desired route waypoint and press T. A pop-up menu of editing choices will appear, with options for reviewing, removing, moving, or inserting a route waypoint. To review a route waypoint: 1. Highlight the ‘Review?’ option and press T. To remove a route waypoint: 1. Highlight the ‘Remove?’ option and press T. To move a route waypoint: 1. Highlight the ‘Move?’ option and press T. 2. Move the cursor to the new map position and press T. To insert new route waypoint(s) at the beginning or end of the route: 1. Select the first (to add waypoints to the beginning of the route) or last (to add waypoints to the end of the route) route waypoint with the map cursor, and press T. 2. Highlight the ‘Insert?’ option and press T. 3. Move the cursor to the new waypoint position and press T. 4. If you are not inserting an existing waypoint, press T to confirm the new waypoint. 5. Repeat steps 3 and 4 to insert additional waypoints, or press Q to finish. 48 A. To move a route waypoint, select the ‘Move?’ option and press EDIT/ENTER. B. Move the arrow cursor to the new waypoint position and press EDIT/ENTER to confirm. SECTION8 ROUTES Reviewing & Editing Routes On Map

point in any route leg using the map cursor. To insert a new waypoint between two existing route waypoints: 1. Use the cursor to select the leg you want to insert the new waypoint in (the route line will change to a dotted line when the leg is selected) and press T. 2. Move the cursor to the new map position and press T. 3. If you are not inserting an existing waypoint, press T to confirm the new waypoint. The route edit options page provides access to a variety of functions which can be used to review, activate, invert, or edit the route as text and adjust the map view of the selected route. To display the route edit options: 1. Press O. To select a menu option: 1. Highlight the desired option and press T. The following options are available: • Edit As Text?— allows you to modify a route by text entry. To edit a route by text entry: 1. Highlight the ‘Edit As Text?’ option and press T. The text edit page will appear, showing a list of all route waypoints, with the desired track and distance of each leg displayed. 2. Select the route waypoint you want to review or change and press T. A pop-up menu with four route editing options will appear. To review the selected waypoint: 1. Highlight the ‘Review?’ option and press T. A. A new route waypoint may be inserted into any route leg by pointing to the new way- point or position and pressing EDIT/ENTER. B. The ‘Edit As Text?’ option allows you to review and modify waypoints by text data entry. 49 SECTION8 ROUTES Route Edit Mode

1. Highlight the ‘Insert?’ option and press T. 2. Enter the name of the new waypoint using the R keypad, or press O to select the new waypoint from the nearest list, waypoint list, or map display. 3. Press T to finish. To remove the selected route waypoint: 1. Highlight the ‘Remove?’ option and press T. To change the selected route waypoint: 1. Highlight the ‘Change?’ option and press T. 2. Enter the name of the new waypoint using the R keypad, or press O to select the new waypoint from the nearest list, waypoint list, or map display. 3. Press T to finish. The route edit options page features five more functions. These functions may be selected by highlighting the desired function and pressing T: • Activate Route?— activates the route you are editing and begins navigation. • Invert Route?— activates the route you are editing in reverse order and begins nav- igation. • Center On Vessel?— redraws route edit map with your vessel in the center of the display. • Center On First Wpt?— redraws route edit map with the first route waypoint in the center of the display. • Deactivate Route?— stops navigation of the route currently selected. To exit the route edit mode and return to the route list page, press the Q key. 50 A. To remove a route waypoint, highlight the waypoint on the map, press EDIT/ENTER, and select the ‘Remove?’ option from the pop- up window. B. The route edit options page lets you activate, invert, or deactivate the route you are editing. The ‘Center On Vessel’ and ‘Center On First Wpt’ options redraw the map to display the desired option. SECTION8 ROUTES Editing Routes & Route Editing Options

The GPSMAP 180’s route list page displays all the routes currently stored in memory in numerical order, with the route number and comment displayed. Route 00 is always reserved for the TracBack route, while routes 1-20 serve as storage routes (route 20 is stored as the GPSMAP tour route, which may be deleted at any time). From the list, you may enter your own 16-character route comment and select a specific route for activation, editing, or other management functions. To enter a custom route comment: 1. Highlight the desired route and press T. 2. Press the left arrow key of the R keypad to clear the comment field. 3. Use the R keypad to enter the new route comment and press T. Once you have selected a route from the route page, additional functions for that route are available from the route options page. To display the route options: 1. Press O. To select a menu option: 1. Highlight the desired option and press T. The following options are available from the route list page: • Create New Route?— allows you to create a new route (see page 47). • Activate Route?— activates the selected route and begins navigation. • Invert Route?— activates the selected route in reverse order and begins navigation. • Edit On Map?— allows you to edit the selected route on the map (see pages 48-49 for specific instructions). • Edit As Text?— allows you to edit the selected route by text (see pages 49-50 for specific instructions). A. The route list page displays each route stored in memory, along with a 16-character user comment. The default comment is the name of the first and last route waypoint. B. The route list options page provides quick access to many route functions, including activating and deactivating a selected route. 51 SECTION8 ROUTES Route List Page

• Clear Route?— allows you to clear all waypoints from the selected route. To clear the selected route: 1. Highlight the ‘Clear Route?’ option and press T. 2. Press T to confirm the clear route warning. • Copy Route?— allows you to copy the waypoints of a selected route to another route. The route copy function can be used to copy a TracBack route (route 00) to another route in order to either prevent losing the route the next time a TracBack route is activated, or save a modified version of an existing route without losing the original. To copy a route: 1. Highlight the ‘Copy Route?’ option and press T. The selected route will appear as the ‘copy from’ route, and the first open storage route will appear as the ‘copy to’ route. 2. Press T to confirm. (If you’d like to change the route number that is being copied or the open route which is being copied to, highlight the appropriate field and press T; select the new route number and press T. • Deactivate Route?— stops navigation of the route you are currently navigating. 52 A. To delete all waypoints from a selected route, highlight the ‘Clear Route?’ option and press EDIT/ENTER. B. Once a route is cleared, all waypoints are removed from the route. They are still stored in memory, however. SECTION8 ROUTES Route List Options

Whenever you have activated a route in the GPSMAP 180 system, the active route page will appear in the main page sequence. The active route page shows each waypoint of the active route, with the waypoint name, desired track, cumu- lative distance and ETE or ETA for each waypoint from your present position. The current destination waypoint, the “active to” waypoint, is marked with an arrow icon. As you navigate a route, the waypoint list will automatically update to indi- cate the next “active to” waypoint first. From the active route page, you can: • Change the route comment- see page 51 for instructions. • Edit the route on map- see pages 47-48 for instructions. Additional functions for the active route are available from the active route options page. To display the active route options: 1. Press O. To select a menu option: 1. Highlight the desired option and press T. 53 Each waypoint on the active route page may be reviewed, deleted, or changed right from the active route page. To edit an active route waypoint, high- light the desired waypoint and press EDIT/ENTER. Select the desired function from the pop-up menu and press EDIT/ENTER. SECTION8 ROUTES Active Route Page

The following options are available from the active route page: • Invert Route?— activates the active route in reverse order and begins navigation. • Activate Route?— reactivates the active route and selects the route leg closest to your current position as the new active leg. • Edit On Map?— allows you to edit the selected route on map (see pages 48-49 for specific instructions). • Clear Route?— allows you to clear all waypoints from the selected route. • Copy Route?— allows you to copy the waypoints of the active route to another route. • Change Data Fields?— allows you to define the data displayed in the distance and ETE fields. Four data options are available: • DIS– distance to active wpt • DTK– desired track • ETE– estimated time enroute • ETA– estimated time of arrival • Restore Defaults?— resets all active route page options to the factory settings. • Deactivate Route?— stops navigation of the route you are currently navigating. • Setup Simulator?— allows you to define speed, course, and position values while in simulator mode. See the Getting-Started Tour for more on using the simulator mode. 54 The ‘Change Data Fields?’ option lets you specify what information is displayed for each route way- point. Four data options are available: distance, desired track, and ETA or ETE to each route way- point. SECTION8 ROUTES Active Route Page Options

The Main Menu Page’s track submenu lets you specify whether or not to record a track plot (an electronic recording of your path) and define how it is recorded. It also provides an indicator of the track memory used and selects functions to clear the track memory and start a TracBack route. The following functions are available: • Record Mode— lets you select one of three track recording options: • Off– No track log will be recorded. Note that selecting the ‘Off’ setting will prevent you from using the TracBack feature. • Fill– a track log will be recorded until the track memory is full. • Wrap– A track log will be continuously recorded, wrapping through the available memory (replacing the oldest track data with new data). • Interval— defines the frequency with which the track plot is recorded. Three interval settings are available: • Time– records track plot based on a user-defined time interval. • Resolution– records track plot based upon a user-defined variance from your course over ground. The resolution option is the default setting and is recommended for the most efficient use of memory and TracBack per- formance. The distance value (entered in the interval field) is the maxi- mum error allowed from the true course before recording a track point. • Distance– records track based on a user-defined distance between points. • Interval Value— defines the distance or time used to record the track log. • Delete Track?— allows you to clear the track log currently stored in memory. • Start TracBack?— converts the current track log into an inverted route and begins route navigation along the track log. To reset all track options to the default settings: 1. Press O, followed by T. 55 A. The ‘Wrap’ option will continuously record a track log, and replace the oldest track log point with new data. The ‘Fill’ option will record a track log until the memory is full. B. The track submenu’s default settings may be quickly restored from the track options page. SECTION9 SETUP MENUS Track Log Setup

The GPSMAP 180’s trip and fuel planning submenu lets you plan and review distance, fuel, and ETE/ETA information between any two waypoints; your pre- sent position and a stored waypoint; or any part of a stored route. Sunrise and sunset information is also provided. Two planning modes are available: point-to- point and route planning. To use the point-to-point planning mode: 1. Highlight the ‘Trip & Fuel Planning’ option from the Main Menu Page and press T. 2. If the plan field is not set to ‘Point-To-Point’, press the O key and select it from the options page. 3. Highlight the first waypoint field and press T. Press the left arrow key to clear the field, and use the R keypad to enter the name of the starting waypoint. You may leave the waypoint field blank to use your present position, or press the O key to select the way- point from the nearest list, the waypoint list, or the map display. Press T to confirm the waypoint. 4. Move the field highlight to the second waypoint field and follow the steps above to select the destination waypoint. 5. Enter a speed for your trip in the speed field, or press O to select your current SOG for the speed value. 6. Enter an hourly fuel flow (if desired) in the fuel field, and press T. 7. Enter the date and time of your departure (the default date and time will be the current date and time in UTC or local time, whichever you have selected) and press T. The bottom of the page will now display the desired track and distance between the two points; the estimated time enroute and fuel required; the date and time of your arrival; and the sunrise and sunset times at the destination for the date of arrival. 56 A. To perform point-to-point planning, enter a ‘TO’ and ‘FROM’ waypoint, or leave the field blank if you want to use your present posi- tion. B. Enter a date and time for your departure. The sunrise/sunset and ETA at the ‘TO’ waypoint will be displayed at the bottom of the page. SECTION9 SETUP MENUS Trip & Fuel Planning

any route stored in memory, in leg or cumulative leg, or route totals. To use the route planning mode: 1. Highlight the ‘Trip & Fuel Planning’ option from the Main Menu and press T. 2. If the plan field is not set to ‘Route’, press O and select it from the options page. 3. Highlight the route number field and press T. 4. Use the R keypad to select the route you want to plan and press T. 5. Highlight the leg field and press T. 6. To plan the cumulative totals for the all route legs, select the ‘ALL’ option—or use the R keypad to select a specific route leg to plan. Press T to confirm. 7. Enter a speed for your trip, or press O to select your current SOG for the speed value. 8. Enter an hourly fuel flow (if desired) in the fuel field, and press T. 9. Enter the date and time of your departure (the default date and time will be the current date and time in UTC or local time, whichever you have selected) and press T. The bottom of the page will now display the planning information for the route leg selected or the cumulative values for the entire route. The route planning mode will also let you plan cumulative totals for multiple route legs by using the ‘Hold First Waypoint?’ selection from the options window. To plan multiple route legs: 1. Follow steps 1 through 6 above to select the last route leg you want to plan. For example, select leg 03 if you want to plan cumulative totals for the first three legs of the route (with- out including the rest of the route). 2. Enter the speed, fuel and date/time values as described in steps 7-9 above. 3. Press the O key to display the options page. 4. Select the ‘Hold First Waypoint?’ option and press T. The cumulative totals from the first route waypoint to the end of the selective leg will appear at the bottom of the page. 57 A. To plan cumulative totals for an entire route, select the ‘All’ option from the leg field. B. To plan cumulative totals through a particular leg, select the ‘Hold First Waypoint?’ option from the Trip and Fuel Planning options page. Then enter the last leg you want to plan in the leg field. SECTION9 SETUP MENUS Route & Trip Planning

and sunset times for your present position or any waypoint for a selected date. To use the sunrise/sunset planner: 1. Highlight ‘Trip & Fuel Planning’ option from the main menu and press T. 2. Highlight the first waypoint field and press T. Press the left arrow key to clear the field, and use the R keypad to enter the name of the desired waypoint. You may leave the waypoint field blank to use your present position, or press the O key to select the way- point from the nearest list, the waypoint list, or the map display. To calculate the sunrise/sunset for your present position, leave both waypoint fields blank. 3. Press T to confirm. 4. Highlight the date field and press T. 5. Enter the date you want sunrise/sunset information for (the current date and year will be used as the default setting) and press T. The sunrise and sunset times for the arrival date will be displayed at the bottom right of the planning page. Setup Submenus The last four options available from the Main Menu Page provide access to the various system, navigation, alarm, and interface settings of the GPSMAP 180. The system setup submenu is used to select the operating mode, date and time for- mats, tone preferences, backlight timeout, and display contrast. • Operational Mode lets you select between normal operation and simulator mode. The GPSMAP 180’s system only pretends to track satellites in simulator mode, and should not be used for actual navigation. Waypoints and routes created in simulator mode are saved in memory and are available for use in normal mode. • Time Offset provides a data entry field to enter the time difference between UTC time and the local time. (See Appendix F for a list of time offsets.) When entering a time offset, be sure to select a positive or negative offset. Note that entering an off- set will not automatically display local time. The local setting from the Date/Time Selection submenu must be selected. 58 A. The system setup submenu provides access to the GPSMAP 180’s time formats and con- trast/backlight controls. B. When entering a time offset, be sure to select a positive or negative indicator to the left of the offset value. SECTION9 SETUP MENUS Sunrise/Sunset Planning & System Setup

Time) time or local time offset from UTC time. The default setting is local with a ‘0’ offset. (If you are boating in the United States, be sure to enter a negative time indi- cator in front of the appropriate time offset for your location). • Tone Selection lets you select an audible tone to sound for either messages and keystroke confirmation (the default setting), messages only, or not to sound at all (the tone selection does not affect the external alarm operation). • Display Contrast provides a slide bar to adjust the LCD screen contrast in order to compensate for changes in temperature or lighting conditions. • Backlight Timeout provides an automatic shutoff for the GPSMAP 180’s screen backlighting. Six settings are available: No Timeout (the backlight will stay on until it is turned off), 15 seconds (default setting); 30 seconds; and 1, 2, or 4 minutes. Keeping the timeout at the lowest acceptable setting will prolong the life of the backlight. • Language lets you select one of nine languages that the unit can display. The avail- able lanaguages are; English, Danish, Finnish, French, German, Italian, Portuguese, Spanish, Swedish. The system setup page also features an options page that allows you to quickly reset all the system setup options to the factory default settings and define speed, course and position values while in simulator mode (see Getting-Started Tour). To view the system setup page options: 1. Press the O key. To restore the default settings: 1. Highlight the ‘Restore Defaults?’ option, and press T. A B 59 A. The tone preference will not affect external alarm operation. B. Keeping the backlight timeout at the lowest acceptable setting will prolong the useful life of the backlight. SECTION9 SETUP MENUS System Setup & System Setup Options

tion including: position format, units of measure, and heading preferences. This submenu is also used to select map datums, set the CDI scale and adjust the built- in velocity filter. The following options are available: • Position Format lets you select the coordinate system used to display position. The following formats are available: • hddd.dddddº (degrees) • hdddºmm.mmm’ (degrees and minutes) • hdddºmm’ss.s” (deg/min/sec) • British grid • German grid • Irish grid • Maidenhead • Swedish grid • Swiss grid • Taiwan grid • Loran TD • UTM/UPS grid See Appendix G, page 80 for more information on the Loran TD positon format. • Navigation Units selects the format for speed and distance measurements. You may select from nautical, statute, or metric formats. (The default setting is nautical.) • Depth Units selects the format for depth contour display on Micro G-chart offshore chart cartridges. Depth contours can be displayed in feet, meters, or fathoms. (The default setting is feet.) • Heading lets you select what reference is used in calculating heading information. You can select to reference automatic magnetic variation, true north, grid heading, or user magnetic variation. (The default setting is automatic.) To enter a user magnetic variation: 1. Highlight the ‘Heading’ field and press T. Select the ‘User Mag Var’ option and press T. 2. Press T to access the variation field, and use the R keypad to enter the desired variation. Press T to confirm. • CDI Scale provides a list of six CDI scale settings for the map page CDI: +/-0.10, 0.50, 1.0 (default), 5.0, 10.0, and 25.0 miles or kilometers. The scale represents the distance from the center of the scale to either end of the scale. 60 A. The GPSMAP 180 will also display position coordinates in eight grid formats. B. To enter a user magnetic variation, select the ‘User Mag Var’ option and enter a direction and value in the variation field. SECTION9 SETUP MENUS Navigation Setup

graphic steering guidance. The steer-to-center selection displays your position as the vertical line on the scale, and your desired track as the center of the scale. The steer to D-Bar option displays your position as the center of the scale, with the desired track as the vertical line. The default setting is steer to center. • Map Datum provides a list of the available map datums for use with the GPSMAP system. For a list of the available GPSMAP datums, see Appendix D. The default set- ting is WGS 84. • Velocity Filter allows you to select the GPSMAP’s response time to changes in track or ground speed. Three settings are available: automatic, on, or off. The ‘auto’ (default) setting will monitor the changes in your current track and speed and adjust the receiver’s response time automatically. The ‘on’ setting allows you to manually enter a response time up to 240 seconds. Selecting a higher setting may be desirable in slow-speed applications with frequent changes in track. To enter a user defined velocity filter value: 1. Highlight the ‘Velocity’ field and press T. Select the ‘On’ option and press T. 2. Highlight the time value field. 3. Press T. 4. Enter a value in seconds (up to 240) and press T to confirm. A B 61 A. CAUTION! Using the incorrect map datum can seriously effect the accuracy of your GPS receiv- er. The GPS datum should always match the datum of the local chart you are using. If no datum information is indicated on the charts you are using, contact the chart manufacturer. B. Keeping the velocity filter on the ‘Auto’ setting will allow the GPSMAP 180 to automatically monitor and adjust the response time for track and speed calculations. SECTION9 SETUP MENUS Navigation Setup

The timer & alarms submenu is used to control various alarm/timer settings. • Timer sounds an alarm when an entered interval (up to 99:59:59) has expired, or provides a continuous running clock timer to 99:59:59. To use the countdown timer: 1. Select the ‘Count Down’ menu option. 2. Enter the desired time interval in the interval field, and press T. 3. Once the count down time has expired, an alarm message will appear, and the timer will automatically switch to the count up mode. 4. To reset the timer, select the reset option and press T. • Clock Alarm provides an alarm for the system clock. To use the clock alarm, select the ‘On’ option and enter the desired time of day in the time field. • Arrival Alarm lets you specify an alarm to sound when you’re a specified distance away from a destination waypoint. Three options are available: • Off- No arrival alarm will sound. • Auto- An arrival alarm will sound one minute before the destination, based upon your current speed and course over ground. • On- An arrival alarm will sound at the alarm distance specified in the distance field for the destination waypoint (the ‘On’ setting will only provide an arrival alarm for the final destination waypoint of the active route). • Crosstrack Alarm provides an alarm for crosstrack error (XTK) when your vessel is off course by more than a specified distance, up to 99.99 (units). • Anchor Drag Alarm lets you specify an alarm to sound when you’ve exceeded a specified drift distance, up to 9999 (units). Whenever the anchor alarm is trig- gered, an anchor icon will appear in the status bar. A. The timer field can be set to count down from a specified interval or provide a running count of elapsed time. B. The ‘On’ setting of the arrival alarm will cause the alarm to sound only for the final destination waypoint of a route at the dis- tance specified. 62 A B SECTION9 SETUP MENUS Timers & Alarms

external NMEA devices, a DGPS receiver, or a personal computer. The ‘Input/Output Format’ field, at the top of the page, lets you specify one of seven interface formats: Data Transfer is a proprietary interface that allows you to exchange data such as way- points, routes, and track logs between GPSMAP units or a GARMIN PC kit. No In/NMEA Out provides navigation information to a compatible NMEA device such as an autopilot or radar. NMEA 0180, 0182, 0183 v.1.5 and 0183 v.2.0 output options are available. See Appendix B for additional NMEA sentence information. No In/No Out provides no interfacing capabilities. RTCM In/NMEA Out allows DGPS beacon receiver input and also provides selectable NMEA output. RTCM In/No Out allows DGPS beacon receiver input, with no output capabilities. NMEA In/No Out allows input from a NMEA compatible external device, such as a Yeoman© Plotter, with no output capabilities. NMEA In/NMEA Out provides the same input capabilities as NMEA IN, with selectable NMEA output. When the ‘Data Transfer’ option is selected, you’ll need to specify what informa- tion to request or send to the remote unit through the ‘Transfer Mode’ field. The ‘slave’ setting lets you control all data transfer from the ‘external’ GPS receiver, or PC while the other settings request or send specific data from the primary unit. A. The data transfer options allow you to send or receive almanac data, proximity way- points, routes, track log data, and waypoints to another GARMIN GPS or PC Kit. B. The NMEA In setting allows you to accept NMEA data from a Yeoman plotter or other compatible device. 63 A B SECTION9 SETUP MENUS Input & Output Setup

If you are using an NMEA interface format, the NMEA format must be specified in the NMEA format field that will automatically appear when an NMEA option is selected. The appropriate baud rate will be set automatically. To select an NMEA format: 1. Select a NMEA IN/OUT format from the options page. 2. Highlight the NMEA Format field and press T. 3. Select a NMEA sentence format and press T. 4. The baud rate will automatically be set to the appropriate speed. If you have selected an NMEA IN/OUT setting, you must use the same NMEA format for both the input and output device. Tuning DGPS Stations If the I/O Format is set to accept RTCM input/NMEA Output for connecting a differential-ready GPS beacon receiver, you will need to tune a frequency in the tuning field and select a bit rate. The default frequency will be 304.0 kHz, with a bit rate of 100 bps, or the last DGPS frequency/bit rate selected. To tune a DGPS frequency: 1. Select the ‘RTCM In/NMEA Out’ format from the options page. 2. Highlight the beacon receiver frequency field and press T. 3. Enter the desired frequency and press T. If you are using an auto- matically-tuned DGPS receiver, you may enter 000.0 for the frequency. 4. Press T to select a bit rate. Five bit rates are available: 0 (used for automatically-tuned DGPS receivers), 25, 50, 100 and 200 bps. Press T to confirm. The DGPS status, along with the signal-to-noise ratio of the tuned station, will be displayed at the bottom of the page. A. Select the desired format from the NMEA field. The baud rate will automatically be set to the appropriate speed. B. After entering a DGPS frequency, set the bit rate to the speed indicated on the USCG sta- tion chart. DGPS coverage, frequencies, and bit rates are available from the Coast Guard’s automated FAX service (703-313-5920). 64 A B SECTION9 SETUP MENUS NMEA & DGPS Setup

The GARMIN GPSMAP 180 system uses Micro G-chart offshore or inland cartog- raphy to display digital charts on-screen. Micro G-chart cartridges are installed ti the card slot located at the bottom right of the GPSMAP unit. Micro G-chart cartridges may be installed or removed at any time, whether the unit is turned on or off. To install a Micro G-chart cartridge: 1. Open the cartridge door on the GPSMAP 180 unit. 2. Insert the card (label facing front and Micro G-chart logo at top) into the slot. 3. Use your thumb to firmly push the cartridge into place. If your GPSMAP 180 is on, a confir- mation tone will sound when the cartridge has been properly installed and accepted. 4. Close the door (Note: The door will not close unless the Micro G-chart is fully inserted.). If you insert a Micro G-chart cartridge and get a ‘card format not recognized’ message, try removing the card and reinserting it. If the card is still not recog- nized, contact the dealer you purchased it from for assistance. Micro G-chart cartridges are not waterproof, should not be exposed to moisture or exces- sive static charges, and should be stored in the anti-static bag supplied with the cartridge. To remove a Micro G-chart cartridge: 1. Open the cartridge door. 2. Grasp the card at the bottom groove and pull firmly. 3. If your GPSMAP is on, a confirmation tone will sound when the Micro G-chart cartridge has been removed. 65 SECTION10 G-CHARTS Installing & Removing G-charts

Once a Micro G-chart cartridge has been inserted, the map coverage outlines for the cartridge will automatically appear on-screen. Keep in mind that the dis- play will not automatically scroll to the map area or zoom to a level where you can see the coverage outlines. If you do not immediately see the outlines, scroll the cursor to the broad geographic area covered by the chart and zoom out to another map scale. The large outlined box shown is the main chart, which serves as the boundary area for the entire cartridge. The small outlined box inside the main box are sub- charts, which provide more detailed coverage of the area indicated. To view the detailed cartography of any subchart, scroll the cursor to the subchart outline and use the C key to zoom in to smaller range scales. If the map outlines still do not appear, check the ‘Map Outlines’ setting on the map options page to make sure they are set to appear (see page 26). Whenever you zoom past the usable range of the current electronic chart, the range field will display ‘Ovr Zm’ or ‘No Map’. These warnings indicate that although you may still have cartography, you should exercise extreme caution using the data. See page 25 for more information on Overzoom and No Map modes. When a Micro G-chart cartridge is installed, the GPSMAP 180’s system will automatically use the best available chart for display. As you enter and exit various subcharts, the system will automatically display the appropriate chart for the area you are in. When you leave the area covered by the main map of a cartridge, the GPSMAP 180 will default back to using the built-in 64 nm database if it is avail- able at the current scale. If you are not seeing certain map items (navaids, depth contours, etc. on offshore cartridges; highways, boat ramps, etc. on inland cartridges), check the map configuration settings available from the map options page. A. Map outlines for Micro G-chart offshore car- tography. B. Map outlines for Micro G-chart inland cartog- raphy. Note: The smaller boxes located within larger boxes indicate areas of greater detail. 66 A B SECTION10 G-CHARTS Using Micro G-chart Cartography

The GPSMAP 180 must be properly installed according to the following instruc- tions to get the best possible performance. The GPS antenna should be installed first, followed by the display unit. To complete the installation, you’ll need the appropriate fasteners for your installation, and a 1” x 14-thread marine antenna mount available at most marine dealers. Mounting the GPS antenna The antenna should be mounted in a location that has a clear, unobstructed view of the sky in all directions to ensure the best reception. Avoid mounting the antenna where it will be shaded by the boat’s superstructure, a radome antenna, or mast. Sailboat users should avoid mounting the antenna high on the mast to pre- vent inaccurate speed readings caused by excessive heeling. Most marine VHF and loran antennas will not seriously degrade the GPS antenna’s reception. Never paint the antenna or clean it with harsh solvents. The GARMIN antenna screws directly onto any standard 1” x 14-thread anten- na mount. If you need to raise the antenna to avoid shading, try using a 1” x 14- thread extension mast available at most marine dealers. To install the GPS antenna: 1. Screw the antenna directly onto the 1” x 14-thread mount. 2. Route the cable to the mounting location of the display unit. Use the appropriate tie- wraps, escutcheon plates, and sealant to secure the cable along the route and through any bulkhead or deck. 3. Once the GPSMAP unit has been installed, connect the cable to the antenna connector on the back of the display unit. Make sure that you turn the antenna-connector locking ring 1/4 turn clockwise to lock the cable into place. 67 SECTIONA APPENDIX Installation It is possible to route the coaxial cable either through, or outside the antenna mount. The BNC connector on the coaxial cable can be removed, and the coaxial cable short- ned to ease installation. If the BNC connector is removed, it must be replaced with a new BNC connector.

The GPSMAP 180’s water-resistant case is suitable for mounting in exposed locations or at the nav station. The unit comes with a mounting bracket and a gimbal mount to allow surface or overhead mounting. When choosing a location for the display unit, make sure you consider the following conditions: • There should be at least a 3” (7.5 cm) clearance behind the case to allow connection of the antenna and power/data cables. • The unit should not be mounted where it is exposed to excessive temperatures for extended periods (see page 71). • You should provide adequate clearance for the Micro G-chart cartridge to slide out com- pletely. • The mounting surface should be heavy enough to support the unit and protect it from excessive vibration and shock. To surface mount the GPSMAP unit: 1. Place the gimbal mount in the desired location. 2. Mark and drill the four mounting holes for the fastener you are using. 3. Fasten the gimbal mount to the surface using the appropriate fasteners. 4. Insert the GPSMAP 180 into the gimbal mount. The mount is designed for a tight fit to provide additional support when swiveling the unit. 5. Screw the two mounting knobs through the gimbal mount and into the mounting bracket. 6. Connect the power/data and antenna cables to the back of the unit, making sure the lock- ing rings are tightened on both connectors. NOTE: The mounting bracket can be rotated 360°, allowing the GPSMAP 180 to be mounted on a vertical surface or overhead. 68 SECTIONA APPENDIX Installation

1. Remove the four M5 screws from the back of the unit and remove the mounting bracket . 2. Using the mounting template provided in the box, determine the location where you want to mount the unit and tape the template in place. 3. Using a hammer and center punch, mark the centers of the relief hole and mounting screw holes. 4. Using a drill and 2.75” hole saw, cut the center relief hole from the panel. Drill the four 0.25” screw holes, using a 1/4” drill bit. 5. From the front, place the GPSMAP 180 into the relief hole until the unit rests flush against the mounting surface. 6. Secure the unit to the mounting surface using M5 screws. Note: For thick mounting surfaces, insert the M5 screws directly thru the four drilled holes (figure 1). For thin panels, place the mounting bracket on the back side of the panel for more support (figure 2). 7. Attatch the power/data cable and antenna connectors. 69 SECTIONA APPENDIX Installation Figure 1 Figure 2 Mounting template provided in box Mounting Template

The power/data cable connects the GPSMAP 180 to a 10-40 volt DC system and provides interface capabilities for connecting external devices, including an external alarm. The color code in the diagram below indicates the appropriate harness connections. The following formats are supported for connection to up to 3 NMEA devices: • NMEA 0180/NMEA 0182 • NMEA 0183 version 1.5 Approved sentences— GPBWC, GPGLL, GPRMB, GPRMC, GPXTE, GPVTG, GPWPL, GPBOD Proprietary sentences— PGRMM, PGRMZ (alt.), PSLIB (beacon receiver control input) • NMEA 0183 version 2.0 Approved sentences— GPGGA, GPGLL, GPGSA, GPGSV, GPRMB, GPRMC, GPRTE, GPWPL, GPBOD Proprietary sentences— PGRME (estimated error), PGRMM (map datum) PGRMZ (altitude), PSLIB (beacon rec. control input) DGPS corrections are accepted in RTCM-104 v. 2.0 format through the NMEA In (BROWN) harness lead. The GARMIN GBR 21 is the recommended beacon receiver for use with the GPSMAP system.Other receivers with the correct RTCM format may be used, but may not correctly display status or allow tuning control from the GPSMAP unit. 70 SECTIONB APPENDIX Wiring &Specifications PIN ASSIGNMENT

PHYSICAL Case: Gasketed Construction Size: 6.13H x 6.30W x 3.0D (15.85 cm x 16 cm x 7.6 cm) Weight: 1.75 Lbs (.794 Kg) Temperature Range: 5º to 158ºF (-15º to 70ºC) PERFORMANCE (GPSMAP 180) Receiver: 12-channel PhaseTrac12 Acquisition Time: Approx. 15 seconds (warm) Approx. 45 seconds (cold) Approx. 5 minutes (AutoLocateTM) Approx. 5 minutes (Search the sky) Update Rate: 1/second, continuous Position Accuracy: 1-5 meters (3-16 ft.)* 15 meters (49 ft.) RMS** Velocity Accuracy: 0.1 knot RMS steady state, 90 knots max. Dynamics: Performs to specification to 6g POWER Input: 10-40v DC Usage: 10 watts max. Specifications subject to change without notice. * With optional GARMIN GBR 21 Beacon Receiver Input. ** Subject to accuracy degradation to 100m 2DRMS under the U.S. DOD-imposed Selective Availability Program. 71 SECTIONB APPENDIX Wiring & Specifications WARNING! The temperature range for the GPSMAP 180 is -4 to +158ºF (-20 to 70ºC). Extended exposure to temperatures exceeding this range (in storage or operating conditions) may cause failure of the LCD screen. This type of failure and related con- sequences are NOT covered by the manufactur- er’s limited warranty.

Anchor Drag Alarm—You have drifted out of the specified distance range. Approaching—You are less than one minute away from reaching a destination waypoint at your present speed over ground. Arrival At—You have arrived at the destination waypoint. Can’t Change An Active Waypoint—You have attempted to change the “active to” or “active from” waypoint. Clear the active route or GOTO before making your changes. Card Format is Not Recognized—The cartridge inserted is not readable by the GPSMAP system and may be damaged. Reinsert the cartridge to make sure it is properly installed. If the cartridge is still not recognized, call the Micro G-chart information line at 1-800-427-6460. Cross-Track Alarm—You have exceeded the off-course distance specified in the CDI setup. Data Transfer is Complete—The receiver is finished uploading or downloading information to the connected device. Database Memory has Failed—The built-in 64 nm database has failed. See an authorized service center for repair. Degraded Accuracy—The accuracy of your GPSMAP system has been degraded beyond 500 meters due to poor satellite geometry or data quality. You should check other navigational sources to verify the position indicated. Max Calibration Is 5000mt (16,400 ft)—You have exceeded the maximum possible map cali- bration. Memory Battery Power is Low—The internal battery that stores waypoints, routes, and track plots needs to be replaced. Take your unit to an authorized GARMIN service center for installa- tion of a new battery. Need Altitude—Your GPSMAP system needs the altitude to maintain a position fix due to poor satellite coverage. Enter your approximate altitude on the initialize position page. Need to Select Init Method—The GPSMAP 180 needs to be initialized to your present position. See pages 1-2 for complete instructions on initialization. No Differential GPS Position—Not enough data is being received to compute a DGPS position. The GPSMAP 180 uses an on-screen message prompt to alert you to important information. Whenever a message appears, press the J key to view the message. 72 SECTIONC APPENDIX Messages

its internal oscillator, which may result in longer acquisition times. Take the unit to an authorized GARMIN service center for adjustment. Poor GPS Coverage—The GPSMAP 180 cannot acquire the necessary number of satellites to compute a position. Power Down and Re-init—The GPSMAP 180 cannot calculate a position due to abnormal satellite conditions. Power down and verify the last position shown by other means. Proximity Alarm—You have entered the alarm radius for the proximity way- point indicated. Proximity List Full—You have used all nine proximity waypoints. Proximity Overlaps Another Prox Wypt—The alarm radius specified overlaps the area specified for another proximity waypoint. RAM has Failed—The random access memory has failed and the unit is not operable. Take your unit to an authorized GARMIN service center for repairs. ROM has Failed—The unit’s permanent memory has failed and the unit is not operable. Take your unit to an authorized GARMIN service center for repairs. Received Invalid Waypoint—A waypoint was received during upload transfer that has an invalid identifier. Receiver has Failed—A failure in receiver hardware has been detected. If this message persists, do not use the unit and take it to an authorized dealer for repair. Route Already Exists—The route number you are trying to copy to is already used. Route Does Not Exist—The route number you are trying to use or copy is not defined. Route is Full—You have attempted to add more than 30 waypoints to a route. Route Memory is Full—You have attempted to create more than 20 routes. Route Waypoint was Deleted—A route waypoint entered does not exist in the database and has been deleted from the route. 73 SECTIONC APPENDIX Messages RTCM Input has Failed—DGPS data being received has been lost. You are no longer receiving the beacon signal. Searching the Sky—The GPSMAP 180 is searching the sky for almanac data. Stored Data was Lost—All waypoints, routes and almanac data has been lost due to internal battery failure. There is No RTCM Input—The beacon receiver is not properly connected or baud rates do not match. Timer Has Expired—The countdown timer has expired. Track Memory is Full—The track memory is full and no additional track plot will be recorded until the track memory has been cleared or set to wrap mode. Wypt Already Exists—The waypoint name you’ve entered already exists in memory. Waypoint Memory is Full—You have used all 250 waypoints in the GPSMAP 180 system.

Senegal, Sudan Afgooye Afgooye- Somalia AIN EL ABD ‘70 AIN EL ANBD 1970- Bahrain Island, Saudi Arabia Anna 1 Ast ‘65 Anna 1 Astro ‘65- Cocos I. ARC 1950 ARC 1950- Botswana, Lesotho, Malawi, Swaziland, Zaire, Zambia, Zimbabwe ARC 1960 Kenya, Tanzania Ascnsn Isld ‘58 Ascension Island ‘58- Ascension Island Astro B4 Sorol Atoll Sorol Atoll- Tern Island Astro Beacon “E” Astro Beacon “E”- Iwo Jima Astro Dos 71/4 Astro Dos 71/4- St. Helena Astr Stn ‘52 Astronomic Stn ‘52- Marcus Island Astrln Geod ‘66 Australian Geod ‘66- Australia, Tasmania Island Astrln Geod ‘84 Australian Geod ‘84- Australia, Tasmania Island Austria Austria Bellevue (IGN) Efate and Erromango Islands Bermuda 1957 Bermuda 1957- Bermuda Islands Bogata Observ Bogata Obsrvatry- Colombia Campo Inchspe Campo Inchauspe- Argentina Canton Ast ‘66 Canton Astro 1966- Phoenix Islands Cape Cape- South Africa Cape Canavrl Cape Canaveral- Florida, Bahama Islands Carthage Carthage- Tunisia CH-1903 CH 1903- Switzerland Chatham 1971 Chatham 1971- Chatham Island (New Zealand) Chua Astro Chua Astro- Paraguay The GPSMAP 180’s built-in worldwide data- base includes chart coverage down to 64 nm (120 km) for the areas outlined above. Note that the GPSMAP database is only valid to 68º15’ of latitude. The maximum cursor latitude is 85º05’, and the maximum waypoint latitude is 89º24.543 north or south. 74 SECTIOND APPENDIX Map Datums

Djakarta Djakarta (Batavia)- Sumatra Island (Indonesia) Dos 1968 Dos 1968- Gizo Island (New Georgia Islands) Easter Isld 67 Easter Island 1967 European 1950 European 1950- Austria, Belgium, Denmark, Finland, France, Germany, Gibraltar, Greece, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland European 1979 European 1979- Austria, Finland, Netherlands, Norway, Spain, Sweden, Switzerland Finland Hayfrd Finland Hayford- Finland Gandajika Base Gandajika Base- Republic of Maldives Geod Datm ‘49 Geodetic Datum ‘49- New Zealand Guam 1963 Guam 1963- Guam Island Gux 1 Astro Guadalcanal Island Hjorsey 1955 Hjorsey 1955- Iceland Hong Kong ‘63 Hong Kong Hu-Tzu-Shan Taiwan Indian Bngldsh Indian- Bangladesh, India, Nepal Indian Thailand Indian- Thailand, Vietnam Indonesia ‘74 Indonesia ‘74 Ireland 1965 Ireland 1965- Ireland ISTS 073 Astro ISTS 073 ASTRO ‘69- Diego Garcia Johnston Island Johnston Island Kandawala Kandawala- Sri Lanka Kandawala Sri-Lanka Kerguelen Islnd Kerguelen Island Kertau 1948 West Malaysia, Singapore L. C. 5 Astro Cayman Brac Island Liberia 1964 Liberia 1964- Liberia Luzon Mindanao Luzon- Mindanao Island Luzon Philippine Luzon- Philippines (excluding Mindanao Isl.) Mahe 1971 Mahe 1971- Mahe Island Marco Astro Marco Astro- Salvage Isl. Massawa Massawa- Eritrea (Ethiopia) Merchich Merchich- Morocco Midway Ast ‘61 Midway Astro ‘61- Midway Minna Minna- Nigeria NAD27 Alaska North American 1927- Alaska NAD27 Bahamas North American 1927- Bahamas (excluding San Salvador Island) NAD27 Canada North American 1927- Canada and Newfoundland NAD27 Canal Zone North Am. 1927- Canal Zone NAD27 Caribbean North American 1927- Caribbean (Barbados, Caicos Islands, Cuba, Dom. Rep., Grd. Cayman, Jamaica, Leeward and Turks Islands) NAD27 Central North American 1927- Central America (Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua) NAD27 CONUS North Am. 1927- Mean Value (CONUS) 75 SECTIOND APPENDIX Map Datums

Cuba NAD27 Greenland North American 1927- Greenland (Hayes Peninsula) NAD27 Mexico N. American 1927- Mexico NAD27 San Salvadr North American 1927- San Salvador Island NAD83 North American 1983- Alaska, Canada, Central America, CONUS, Mexico Nahrwn Masirah llnd Nahrwn- Masirah Island (Oman) Nahrwn Saudi Arbia Nahrwn- Saudi Arabia Nahrwn United Arab Nahrwn- United Arab Emirates Naparima BWI Naparima BWI- Trinidad and Tobago Obsrvtorio ‘66 Observatorio 1966- Corvo and Flores Islands (Azores) Old Egyptian Old Egyptian- Egypt Old Hawaiian Old Hawaiian- Mean Value Oman Oman- Oman Ord Srvy Grt Britn Old Survey Grt Britn- England, Isle of Man, Scotland, Shetland Isl., Wales Pico De Las Nieves Canary Islands Potsdam Germany Pitcairn Astro ‘67 Pitcairn Astro ‘67- Pitcairn Prov So Amricn ‘56 Prov So Amricn ‘56- Bolivia, Chile,Colombia, Ecuador, Guyana, Peru, Venezuela Prov So Chilean ‘63 So Chilean ‘63- S. Chile Puerto Rico Puerto Rico & Virgin Isl. Qatar National Qatar National- Qatar Qornoq Qornoq- South Greenland Reunion Reunion- Mascarene Island Rome 1940 Rome 1940- Sardinia Isl. RT 90 Sweden Santo (Dos) Santo (Dos)- Espirito Santo Sao Braz Sao Braz- Sao Miguel, Santa Maria Islands Sapper Hill ‘43 Sapper Hill 1943- East Falkland Island Schwarzeck Schwarzeck- Namibia South American ‘69 S. American ‘69- Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Venezuela, Trin/Tobago South Asia South Asia- Singapore Southeast Base Southeast Base- Porto Santo and Madiera Islands Southwest Base Southwest Base- Faial, Graciosa, Pico, Sao Jorge and Terceira Islands Timbalai 1948 Timbalai 1948- Brunei and E. Malaysia (Sarawak and Sabah) Tokyo Tokyo- Japan, Korea, Okinawa Tristan Astro ‘68 Tristan Astro 1968- Tristan da Cunha Viti Levu 1916 Viti Levu 1916- Viti Levu/ Fiji Islands Wake-Eniwetok Wake-Eniwetok- Marshall WGS 72 World Geodetic System 72 WGS 84 World Geodetic System 84 Zanderij Zanderij- Surinam 76 SECTIOND APPENDIX Map Datums

satellites) that is transmitted to your receiver from every GPS satellite. Almanac data must be acquired before GPS navigation can begin. Bearing (BRG)—The compass direction from your position to a destination. Course Over Ground (COG)—Direction of movement relative to a ground position. Crosstrack Error (XTK)—The distance you are off a desired course in either direction. Desired Track (DTK)—The compass course between the “from” and “to” waypoints. Differential GPS (DGPS)—An extension of the GPS system that uses land-based radio bea- cons to transmit position corrections to GPS receivers. Estimated Time of Arrival (ETA)—The time of day of your arrival at a destination. Estimated Time Enroute (ETE)—The time remaining to your destination at your present speed. Grid—A coordinate system that projects the earth on a flat surface, using square zones for position measurements. Ground Speed (SOG)—The velocity you are traveling relative to a ground position. Latitude—A north/south measurement of position perpendicular to the earth’s polar axis. Longitude—An east/west measurement of position in relation to the Prime Meridian, an imaginary circle that passes through the north and south poles. Position—An exact, unique location based on a geographic coordinate system. Turn (TRN)— The difference and direction in degrees between the bearing to your desti- nation and your course over ground. The TRN value is used to indicate what direction, and how many degrees, to turn to get back on course. 77 SECTIONE APPENDIX Glossary

tude) in Greenwich, England. Universal Transverse Mercator- (UTM)— A grid coordinate system that projects global sec- tions onto a flat surface to measure position in specific zones. Velocity Made Good (VMG)—The speed you are traveling in the direction of the destination. Waypoint—A specific location saved in the receiver’s memory. 78 SECTIONE APPENDIX Glossary

longitudinal zones. Check with local charts for more detailed information. If you are in daylight savings time, add one hour to the offset. Longitudinal Zone Offset W180.0º to W172.5º -12 W172.5º to W157.5º -11 W157.5º to W142.5º -10 W142.5º to W127.5º -9 W127.5º to W112.5º -8 W112.5º to W097.5º -7 W097.5º to W082.5º -6 W082.5º to W067.5º -5 W067.5º to W052.5º -4 W052.5º to W037.5º -3 W037.5º to W022.5º -2 W022.5º to W007.5º -1 W007.5º to E007.5º 0 E007.5º to E022.5º 1 E022.5º to E037.5º 2 E037.5º to E052.5º 3 E052.5º to E067.5º 4 E067.5º to E082.5º 5 E082.5º to E097.5º 6 E097.5º to E112.5º 7 E112.5º to E127.5º 8 E127.5º to E142.5º 9 E142.5º to E157.5º 10 E157.5º to E172.5º 11 E172.5º to E180.0º 12

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 the waypoint. After the waypoint is stored in unit memory, it will always reference the loran chain number and secondary stations currently selected in the Setup TD field. If you enter a different loran chain number or change the secondary stations in the Setup TD field, the active waypoint information will reflect those changes. Since the GPSMAP 180 does not rely on the loran signal for navigation, it can reference a different GRI chain and/or secondary stations and still navi- gate to the location stored in memory. To change the Setup TD settings: 1. Highlight the ‘Setup TD’ field and press T. 2. Select the field to change and press T. 3. Highlight the new setting and press T..

62 Antenna Installation 67 Arrival Alarm 62 AutoLocate 1-2,18 B Backlight Level 3 Beacon Receiver Setup 63-64 Bearing 77 Bearing/Distance Calculation 26 Built-in Map Coverage 2,74 C Calibrations, Map 28 Cancelling Active GOTOs 44 Capabilities iii Cautions ii Clock Alarm 62 Configurations, Map 27-28 Contrast Setting 59 Countdown Timer 62 Course Deviation Indicator (CDI) 13 Crosstrack Error 77 Cursor Mode 23-24 Cursor Movement 8,24 D Data Field Entry 10 Data Window 47 Date/Time Formats 59 Datums 74-76 Definitions 77-78 Desired Track (DTK) 77 Depth Contours 60 Depth Units 60 Dilution of Precision (DOP) 18 DGPS Setup 63-64 DGPS Status 18 E Entering Initial Position 2,19 Estimated Position Error (EPE) 18 Estimated Time of Arrival (ETA) 29,77 Estimated Time Enroute (ETE) 29,77 F Full Page Mapping 26 G Micro G-chart Cartridges 65-66 GOTO Key 9,43-44 Ground Speed 77 H Heading Selection 60 I Initialization 1-2 Installation 67-70 Interface Options 63 Interface Setup 63-64 Interval, Track Storage 55

59 Loran TD Position Format 80 M Magnetic Variation 60 Main Menu 33 Man Overboard Function 45 Map Calibration 28 Map Configuration 27-28 Map Datum List 74-76 Map Datum Selection 61 Map Page 26-29 Map Scales 25 Marking a Position 6,34-35 Measuring Bearing & Distance 26 Submenu Selection 15 Message Descriptions 72-73 Messages, Viewing 1 N Navigation Page 12-13,31-32 Navigation Setup 60-61 Navigation Units 60 NMEA Formats 70 NMEA Setup 63-64 No Map Mode 25 O Offset, local time 59,79 Operation Mode Setup 58 Overzoom Mode 25 P Packing List vi Page Sequence 5 Physical Specifications 71 Point-to-Point Planning 56 Position Mode 23 Position Page 20-21 Position Format 60 Velocity Filters 61 Power Off 16 Power On 1 Proximity Alarm 41 R Removing Micro G-chart Cartridges 65 Routes 47-54 Activating A Route 50 Active Route Page 14,53-54 Clearing 52 Copying 52 Creating 47 Deactivating 50,52,54 Editing By Text 49-50 Editing On Map 48 Modifying Route Waypoints 48-50 Modifying Routes 48-52 Moving Route Waypoints 48 Removing Route Waypoints 50 Reviewing Routes 48

57 Stopping Route Navigation 14 S Satellite Acquisition 2,17-18 Satellite Sky View 17 Signal Strength Bars 2,17 Simulator Mode 4 Simulator Tour 4-16 Status Bar 18 Status Page 17-19 Steering Guidance 13,30-32 Sunrise/Sunset Calculation 58 System Setup 58-59 T Table of Contents vii Time Offsets 58-59,79 Timer/Alarm Setup 62 Tone Selection 59 TracBack Function 45-46 Track Log 55 Track Memory 55 Track Plot Resolution 55 Track Recording 55 Trip Odometer 20-21 Turn (TRN) 32,77 U Units of Measure 60 UTC time 59,79 UTM/UPS Coordinates 79 V Velocity Filter 61 Velocity Made Good (VMG) 32,78 W Waypoints 34-42 Active Waypoints 53 Creating 34-37 Deleting 39 Editing By Text 38 Editing On Map 39 Modifying 38-40 Moving Route Waypoints 48 Nearest Waypoints 40 Proximity Waypoints 41 Reference Waypoints 37 Removing Route Waypoints 50 Renaming 39 Reviewing 38 Submenus 40 Waypoint List 42 Wiring Installation 70 83 SECTIONH APPENDIX Index

1200 E. 151st Street, Olathe, KS 66062 USA GARMIN (Europe) LTD Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey SO51 9AQ UK GARMIN (Asia) Corp. 4th Fl., No 1, Lane 45, Pao-Hsing Road, Hsin Tien, Taiwan R.O.C. Part Number 190-00157-10 Rev. A