Garmin GPSMAP 178C Owner'S Manual Download

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owner’s manual

GPSMAP 178C

GPSMAP178C Cover.indd 1

6/9/2004, 10:00:00 AM

Summary of Contents for GPSMAP 178C

Page 1: ...owner s manual GPSMAP 178C GPSMAP178C Cover indd 1 6 9 2004 10 00 00 AM...

Page 2: ...nge 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 improvement...

Page 3: ...provided on page iv of this manual NOTE If you have previously registered a Garmin product purchase we invite you to re register using our NEW on line system Many services provided by our new product...

Page 4: ...ns However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determine...

Page 5: ...ghtings charts etc For safety always resolve any discrepancies before continuing navigation CAUTION IT IS THE USER S RESPONSIBILITY TO USE THIS PRODUCT PRUDENTLY THIS PRODUCT IS INTENDED TO BE USED ON...

Page 6: ...imitations may not apply to you Garmin retains the exclusive right to repair or replace the unit or software or offer a full refund of the purchase price at its sole discretion SUCH REMEDY SHALL BE YO...

Page 7: ...p to 20 miles includes detailed ocean river and lake coast lines cities interstates US state highways and local thoroughfares 50 reversible routes with up to 50 waypoints each Uploadable maps using Ga...

Page 8: ...our unit please check to see that your package includes the following items If any parts are missing please contact your Garmin dealer immediately Standard Package GPSMAP 178C Sounder Unit GA 29 Remot...

Page 9: ...ce 22 91 Map Page 22 Cursor 23 Zooming 24 Map Page Options 25 Map Sonar Split Page 32 Sonar Page 33 Adjustment Menu 34 Sonar Page Options 36 Sonar Tab Options 39 Compass Page 41 Highway Page 42 Highwa...

Page 10: ...k your present location as a waypoint 44 Go to a destination 53 Create and use a route 57 Pan using the map arrow 23 Zoom in or out on the Map page 24 Recon gure the Map page display 25 Adjust Sonar s...

Page 11: ...nt when pressed and held for more than one second MENU Key The MENU key displays a menu of available options for the current page Press twice or press and hold for more than one second to display the...

Page 12: ...al features which are speci c for that particular page To select any feature on the list of options requires movement of the cursor which is identi ed as highlighting selecting or choosing an item in...

Page 13: ...s you rapidly through the list 4 Use the ARROW KEYPAD LEFT RIGHT arrows to move to the next character on the line or back wards to edit characters If there are more than two lines of data keep pressin...

Page 14: ...within a few minutes Before you initialize make sure the GPSMAP 178C Sounder unit and antenna have been correctly installed on your vessel according to the instructions in Appendix A The antenna needs...

Page 15: ...Ready 2D or 3D during this process it is not necessary to initialize the unit The GPS Information Page appears as the receiver begins acquiring satellites for your region and should acquire a x withi...

Page 16: ...complete press the ENTER MARK key if you agree to acknowledge the warning The GPS Information Page appears as the receiver begins acquiring satellites From this or any other page you may also adjust t...

Page 17: ...Simulator option and press ENTER Choose No to the retail demonstration and press the ENTER key 3 Press the ENTER key to con rm the Running Simulator message that appears at the bottom of the display...

Page 18: ...at its various features and displays The map display shows your boat as a triangle marker on an electronically generated chart Geographic names roads markers and buoys that are provided by the optiona...

Page 19: ...r along with the latitude longitude of the cursor 3 Press the QUIT key to remove the cursor and re center your boat on the map display As you become more familiar with the cursor you ll see that the m...

Page 20: ...f you accidentally press ENTER MARK before you are done simply press ENTER MARK again and move the highlight to where you left off 5 After you have entered all the letters press ENTER MARK to con rm t...

Page 21: ...lect a pre programmed tour route using the rst method This also shows how the MENU key is used throughout the GPSMAP 178C Sounder system to provide tab style options and functions Let s start by chang...

Page 22: ...A data eld at the top of the page now displays the speed distance to the second route waypoint and a compass ribbon which shows you which way to go To get started let s enter a speed for our vessel w...

Page 23: ...earing from your present position and the coordinates for the waypoint To review the waypoint page for a selected waypoint 1 With the waypoint highlighted press ENTER 2 To return to the Map Page press...

Page 24: ...f a zoomed portion of the sonar bottom lock display scaled from the bottom up or a combination of these options see pg 34 For example you may choose to show dual frequency at a 2X zoom Dual 2X on one...

Page 25: ...e desired option and press ENTER to access the adjustment window To easily exit any of the adjustment options press the QUIT key To change an Adjustment Menu setting 1 Select an adjustment option to c...

Page 26: ...your destination For instance if the arrow points up you are going directly to the waypoint If the arrow points any direction other than up turn toward the arrow until it points up then continue in t...

Page 27: ...ourse and Time To Next point Use the Highway Page as your primary navigation page in lieu of the Compass Page when your main concern is follow ing a de ned course Whenever the GPSMAP 178C Sounder is i...

Page 28: ...ferent information categories see pages 30 31 for the complete list On the Highway Page let s change the TIME TO NEXT eld to TIME OF DAY To change a data eld 1 Press the MENU key to display the Highwa...

Page 29: ...ge Use the ARROW KEYPAD to highlight the desired setting then press ENTER 4 Press QUIT when nished Active Route Page Press PAGE to see the last page appearing in the main sequence which is the Active...

Page 30: ...u tabs and options for that tab To get a basic feel for how the Main Menu page works let s delete the two waypoints you created during the simulated tour This ensures that you have a clean slate once...

Page 31: ...opriate reference section of this manual The unit is still in Simulator mode for practice but automatically returns to it s Normal operation mode when you shut it off and turn it back on To turn the G...

Page 32: ...de 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...

Page 33: ...tes Keep in mind that when the cursor is stationary the distance and bearing from your present position changes as your boat moves The cursor may also be used to snap to on screen waypoints and map it...

Page 34: ...Press the OUT key to zoom out and the IN key to zoom in The scale value represents the distance from one end of the scale bar to the other The GPSMAP 178C s system has a built in worldwide database t...

Page 35: ...unctions and features relating to the Map Page and the layout options To display the Map Page options 1 Press MENU To select a menu option 1 Use the ARROW KEYPAD to highlight the desired option and pr...

Page 36: ...ion uses a le tab feature making it easier to organize the various settings for ease of use The following table lists the le tabs and the settings available under each tab General Detail Orientation A...

Page 37: ...me for daylight viewing For Dark mode uses a dark color scheme for night viewing Source Tab Basemap On Off turns the built in base map on or off Data Card Maps On Off turns all optional BlueChart MapS...

Page 38: ...maximum scale at which the feature should appear on the screen Some types of data only shows up to certain zoom scales Navaids Tab Symbol Set Auto GARMIN NOAA International controls the desired navaid...

Page 39: ...thin the circle Lat Lon Grid Text None Small Medium and Large controls the screen size of the name Zoom Auto Off 20 ft 800 mi sets the maximum scale at which the feature should appear Map Outlines On...

Page 40: ...ck DEPTH Depth below transducer DIST TO DESTINATION Distance to nal waypoint DIST TO NEXT Distance to next waypoint ELEVATION Elevation above below MSL Mean Sea Level ETA AT DESTINATION Estimated Time...

Page 41: ...destination VOLTAGE Current voltage reading being received by unit WATER SPEED Speed through the water WATER TEMP LOG Timeline graph of the transducer s temperature reading WATER TEMPERATURE Water tem...

Page 42: ...the split left or right Size Split enables width adjustment of the Map Sonar Split Page You may adjust the size of the map sonar split window anywhere from 1 3 to 2 3 width from the edges of the scree...

Page 43: ...t window OR 1 Press MENU highlight Adjustments and press ENTER A list of all options and their current set tings appears with the selected option highlighted Press UP DOWN on the ARROW KEYPAD to selec...

Page 44: ...or Dual on both sides The Zoom setting is divided into six display levels 2X Split shows two reduced size sonar pictures at the same time The right half of the display screen shows the complete sonar...

Page 45: ...screen is cluttered lowering the sensitivity may increase the clarity of the display Target Level adjusts the color range of a return or target A Color Bar see also page 39 appears on the right side o...

Page 46: ...the ARROW KEYPAD DOWN until the setting bar is all the way at the bottom of the range and reads Off Scroll adjusts the rate that the graph scrolls from right to left If you are sitting still or the g...

Page 47: ...data window at the top of the screen displays the cursor s depth coordi nates and bearing and distance from your current position 3 Press ENTER MARK The New Waypoint page appears with the waypoint s c...

Page 48: ...ation If Fish Symbols are set to Off the unit displays all of the available informa tion about the underwater environment If a sh symbol is selected the graph displays only the information related to...

Page 49: ...face reading for the depth of a keel This makes it possible to measure depth from the bottom of your keel instead of from the transducer s location Enter a posi tive number to offset for a keel or ent...

Page 50: ...tputting a speed you see a Boat Is Not Moving Fast Enough To Calibrate message at the bottom of the display Check that the speed sensor wheel is moving or safely increase boat speed If there is a prob...

Page 51: ...ce the direction of your movement and the direction to your destination For instance if the arrow points up you are going directly to the waypoint If the arrow points any direction other than up turn...

Page 52: ...The highway perspective scale may also be zoomed in or out to display a larger or smaller view of the highway Five settings are available from 1X to 16X with a default setting of 8X To change the high...

Page 53: ...of the data elds to show more elds with a smaller number size or less elds with a larger number size See page 29 Change Numbers allows you to specify the type of data displayed in each data eld used o...

Page 54: ...mark your present position This can be determined by looking at the GPS tab on the Main Menu To mark your present position 1 Press and hold the ENTER MARK key until the New Waypoint window appears the...

Page 55: ...cursor s position 3 The New Map Waypoint page appears To accept the waypoint with the default name and symbol press ENTER To change the name symbol position or add a comment depth or water temp highl...

Page 56: ...appropriate eld and press ENTER Make your changes and press ENTER when nished 5 Use the ARROW KEYPAD to highlight OK and press ENTER to save the waypoint A waypoint may also be created by projecting...

Page 57: ...nu Options Two additional options are available by pressing MENU on the New Waypoint and New Map Waypoint Pages Append To Route and Move Waypoint these menu options also appear on the Waypoint Edit an...

Page 58: ...YPAD to highlight the Points tab then highlight the desired waypoint from the User or Proximity lists 2 Press ENTER to display the Waypoint Edit page If the waypoint is located on a map feature or on...

Page 59: ...ypoint name position and distance and bearing from your current position 2 To move the waypoint press ENTER A MOVE label now appears under the cursor arrow It may be necessary to use the IN and OUT ke...

Page 60: ...the bottom of the User page with the stored waypoints arranged in numerical alphabetical order To scroll through and review the waypoint list 1 With the ARROW KEYPAD highlight the Points tab on the m...

Page 61: ...lete waypoints by symbol 1 From the User tab highlight the waypoint to be deleted and press MENU then select Delete By Symbol and press ENTER 2 Use the ARROW KEYPAD to highlight the symbol of the wayp...

Page 62: ...he desired ON or OFF setting and press ENTER The following options are available from the Proximity submenu of the Points tab Delete Alarm removes selected waypoint from proximity list Delete All remo...

Page 63: ...ch as Cities Tide Stations etc from this list 4 Select a waypoint from the By Name or Nearest list then press ENTER To display the Waypoint Review page for the selected waypoint 5 With the Go To butto...

Page 64: ...ly stored in the receiver s memory which eliminates the need to store waypoints along the way TracBack routes are created by reducing your track log into a route of up to 50 turns and activating an in...

Page 65: ...t the track you wish to follow and press ENTER 3 Choose either Original which navigates you from the start to the end of your trip or Reverse which navigates you from the end to the start of your trip...

Page 66: ...ting up the Track options and saved tracks see pages 75 MOB Key The GPSMAP 178C s Man OverBoard function MOB lets you simultaneously mark and set a course to a position for quick response to emergency...

Page 67: ...the ARROW KEYPAD to highlight the desired waypoint or map item on screen and press ENTER Map items do not appear in the waypoint list To create a waypoint from a map item see page 45 4 To add a new w...

Page 68: ...age OK is automatically highlighted Choose Show Map and press ENTER to view the point on the map then press QUIT to return to the Waypoint Point Review page With OK highlighted press ENTER to add the...

Page 69: ...D to highlight the desired route and press NAV 2 With Follow route name highlighted press ENTER Highlight Activate or Invert and activate and press ENTER To deactivate stop following the route 1 Press...

Page 70: ...s or map items one at a time from the list To review individual route points 1 Highlight the desired point and press ENTER 2 On the Point Review window you may choose Next highlight the next point on...

Page 71: ...Move user waypoints only and Add To remove a route waypoint 1 Highlight the Remove option and press ENTER To move a route waypoint 1 Highlight the Move option and press ENTER 2 Move the cursor to the...

Page 72: ...r the Route Review or Active Route pages use the ARROW KEYPAD to highlight the point you wish to insert the new point before and press MENU 2 Highlight Add Before and press ENTER 3 From the Find menu...

Page 73: ...PAD to select the desired item 3 To enter planning information from the Route Review Page only press MENU and select Trip Planning from the options list Enter the gures for Speed Fuel Flow Departure T...

Page 74: ...share many of the same features and options Active Route Page Options The following options are available by pressing MENU on the Active Route page Edit on Map see page 61 for instructions Add Before...

Page 75: ...nt location 1 From any page press FIND 2 Using the ARROW KEYPAD highlight the desired category from the list and press ENTER 3 For Waypoints and Cities you may search using By Name or Nearest Use the...

Page 76: ...your search from any waypoint route list entry map item or tide station Highlight the item you want to Find from and press the FIND key Find Options Using the Find options you may search from various...

Page 77: ...s 2 Press either MENU for additional submenu options or press ENTER MARK to make changes to the highlighted item Press LEFT on the ARROW KEYPAD to get back to the Menu tab list Press QUIT to return to...

Page 78: ...ength bars the receiver has found the satellite s and is collecting data Dark Green signal strength bars the receiver has collected the necessary data and the satellite s are ready for use As soon as...

Page 79: ...sky view on your GPSMAP 178C Initial reception of the WAAS signal may take up to 15 20 minutes then 1 2 minutes afterwards When WAAS differential correction has been received for GPS satellites number...

Page 80: ...ected Poor GPS Coverage the receiver is no longer tracking enough satellites for a 2D or 3D x Receiver Not Usable the receiver is unusable possibly due to interference or abnormal satellite conditions...

Page 81: ...or off Track Up North Up allows you to select between a north up or track up sky view display for the GPS Info display only AutoLocate allows the receiver to locate your position automatically This pr...

Page 82: ...the top indicates the time of day when using current date and intersects the tide graph to show their relation The tide curve shows as a shaded area with higher tides being taller and lower tides sho...

Page 83: ...W KEYPAD highlight the On eld and press ENTER 2 Enter the desired date and press ENTER To use the current date 1 Press MENU then highlight Use Today s Date and press ENTER You may move the time bar on...

Page 84: ...on on using the Find feature List highlight any category except Other Location and press ENTER If you wish to reference a Find item select from the Find list and press ENTER The location the unit is u...

Page 85: ...he TracBack feature Fill a track log is recorded until the track memory is full Wrap A track log is continuously recorded wrapping through the available memory replacing the oldest track data with new...

Page 86: ...he Saved Track tab of the Main Menu highlight the desired track and press ENTER The Saved Track window appears 2 You may rename the track choose to show the track on the Map and Highway pages delete t...

Page 87: ...they are in transit to the caller s position A non emergency DSC Position Report allows mariners to exchange and display the positions of one another Once a DSC position is received the mariner may ch...

Page 88: ...FCC Forms 159 and 605 U S Federal User Federal users can obtain MMSI assignments from their agency radio spectrum management of ce These procedures are currently under review by the NTIA National Tele...

Page 89: ...u a Distress Call has been received an alarm sounds if enabled The alarm only sounds on a Distress Call and it does not sound on a Position Report Distress Calls are broadcasted to all DSC users in ra...

Page 90: ...Time Sort By Name Sort By Call Type Delete only after highlighting a particular call and Delete All To Review a Call 1 From the DSC tab of the Main Menu and the Log or Call List tab highlighted press...

Page 91: ...e Arrow Keypad highlight the Delete button and press ENTER to delete the entry or highlight the OK button and press ENTER to accept the entry After creating a New Directory Item entry the name created...

Page 92: ...interface control for saving waypoints routes and tracks to a data card When data is saved to a data card it may be exchanged with other compatible units and Garmin s MapSource PC program To transfer...

Page 93: ...Tab contains setup options for the Sonar Page See page 39 Setup Tab consists of three submenu tabs System Units and Time System Submenu Tab controls system settings for beeper speed lter languages sys...

Page 94: ...pth and Temperature The following settings are available Position Format is used to change the coordinate system in which a given position read ing is displayed You should only change the position for...

Page 95: ...ld set to User Mag Var highlight the heading reference eld immediately to the right and press ENTER 2 Use the ARROW KEYPAD to enter the magnetic variation at your current position and press ENTER Dist...

Page 96: ...vices a DGPS beacon receiver a personal computer another Garmin GPSMAP 178C etc If a DGPS receiver is used WAAS capability is automatically turned to Off The unit supports two input output ports See p...

Page 97: ...tting and press ENTER To select a transfer mode 1 Use the ARROW KEYPAD to select Garmin Data Transfer in the Serial Data Format eld 2 Highlight the Transfer Mode eld and press ENTER 3 Use the ARROW KE...

Page 98: ...uning unit is attempting to tune to the speci ed frequency and bit rate Scanning unit is automatically scanning through the frequencies and bit rates Receiving unit is receiving DGPS signal and ready...

Page 99: ...le NMEA sentences the output rate may exceed two seconds The Advanced NMEA Output Setup page allows you to turn on off the GPS status GSA GSV Waypoint Route WPL RTE and the Garmin Proprietary sentence...

Page 100: ...nd when the battery is reaching a critical state of discharge DGPS sets an alarm to sound when the unit loses a differential x Accuracy sets an alarm to sound when the GPS position accuracy falls outs...

Page 101: ...etects a sh of the speci ed size symbol s To set an alarm 1 Use the ARROW KEYPAD to highlight desired submenu tab of the Alarm Tab 2 Highlight the eld below the alarm name you wish activate and press...

Page 102: ...ntenna or clean it with harsh solvents The Garmin antenna screws directly onto any standard 1 x 14 thread antenna mount If you need to raise the antenna to avoid shading try using a 1 x 14 thread exte...

Page 103: ...This type of failure and related consequences are NOT covered by the manufacturer s limited warranty To swivel mount the GPSMAP 178C display Tools not included Drill Screwdriver Phillips or Standard...

Page 104: ...wise to widen the bracket arms clockwise to tighten 2 Adjust the unit angle and tighten the long mounting knob until snug 3 To tilt the unit loosen the long mounting knob on the right side of the brac...

Page 105: ...drill a hole for a location to begin cutting the mounting surface 5 Using the Jig Saw cut the mounting surface along the inside of the dashed line indicated on the template Be very careful when cutti...

Page 106: ...larm Low To Transducer To Unit Beacon Receiver or DSC VHF Autopilot NMEA Device DC Power Source RXD RXD RX TX Alarm Relay 100ma max coil current Note During a typical installation only the Red and Bla...

Page 107: ...er suited to deep water installations The narrow cone angle provides a smaller viewing area compared to a wide cone angle transducer at the same depth with improved bottom resolution and a smaller dea...

Page 108: ...er directly in the path of the prop The transducer can cause cavitation that may degrade the boat s performance and damage the prop Make sure that the transducer is below water level when the boat is...

Page 109: ...e location needs to be in an area of clean water at all speeds Do not place the transducer over any strakes or behind any obstruction on the hull that would create turbulence at speed NOTE Many modern...

Page 110: ...t a depth distance reading when out of the water As the unit powers on it should immediately start showing the bottom Verify that the unit is not in the simulator mode If the unit is in the simulator...

Page 111: ...rce the card and about 1 2 is still exposed when it is properly inserted If the unit is on a con rmation tone sounds and a message displays on the screen noting the card details when the card has been...

Page 112: ...his conversion is approximately thirty meters When the unit is placed in the LORAN TD format mode it simulates the operation of a LORAN receiver Position coordinates may be displayed as TDs and all na...

Page 113: ...t enter the desired setting and press ENTER 4 When done press the QUIT key to return to the Main Menu If the active GRI Chain secondary stations or offsets have been changed since the waypoint was cre...

Page 114: ...y Corrego Alegr Corrego Alegre Brazil Djakarta Djakarta Batavia Sumatra Island Indonesia Dos 1968 Dos 1968 Gizo Island New Georgia Islands Dutch Dutch Easter Isld 67 Easter Island 1967 European 1950 E...

Page 115: ...rima 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 G...

Page 116: ...s For That Area There are no tide stations within 100 miles of the speci ed point Try another area Off Course Alarm You have exceeded the speci ed off course distance Processor Failed Unit Needs Repai...

Page 117: ...low water alarm depth has been detected below transducer Sonar Failed Unit Needs Repair Internal problem with the unit Contact your dealer or Garmin Customer Service page iv to have the unit serviced...

Page 118: ...e estimated time you will reach your destination waypoint based on current speed and track ETA at Destination The estimated time you will reach a Go To destination or the nal waypoint in a route ETA a...

Page 119: ...or stay on course Provides the most ef cient heading to get back to the desired course and proceed along your route Track The direction of movement relative to a ground position Also referred to as gr...

Page 120: ...E007 5 to E022 5 1 E022 5 to E037 5 2 E037 5 to E052 5 3 E052 5 to E067 5 4 E067 5 to E082 5 5 E082 5 to E097 5 6 E097 5 to E112 5 7 E112 5 to E127 5 8 E127 5 to E142 5 9 E142 5 to E157 5 10 E157 5 to...

Page 121: ...displayed on the chart in the order that it is returned rst returned rst on the chart The diagram in the sidebar demon strates this showing an underwater scene as it would be displayed on the chart Ge...

Page 122: ...le 200kHz frequency approximately covers the area of a 6 foot diameter circle at a 30 foot depth When using the GPSMAP 178C in Dual frequency mode the unit transmits both 50kHz and 200kHz signals at t...

Page 123: ...graphs it appears the sh and tree are side by side as shown in Example 1 However when we look at Example 2 we see that the sh can be several feet from the tree It is important to remember that the son...

Page 124: ...ses the whiteline function to make this bottom layer information easier to distinguish With the GPSMAP 178C active whiteline helps accentuate where strong signals are located which make bottom type de...

Page 125: ...ws the GPSMAP 178C to see through thermoclines and helps locate sh where they live and sh love thermoclines A rough de nition of a thermocline is a break in water where the water temperature changes f...

Page 126: ...o IEC 60529 IPX 7 Temp Range 5 F to 158 F 15 C to 55 C Performance Receiver Differential ready 12 parallel channel WAAS capable receiver Acquisition Times Warm Approx 15 seconds Cold Approx 45 seconds...

Page 127: ...on in 1 meter of water for 30 minutes Prolonged submersion can cause damage to the unit After submersion be certain to remove the data card and dry the compartments before reuse To resolve problems th...

Page 128: ...or Sonar Background 39 Color Bar 39 Color Mode 27 Communications Tab 86 90 Compass Page 16 41 Compass Page options 41 Compass Ring 16 41 Contrast 1 6 Copying Routes 59 Course Line 29 Course Up 27 Crea...

Page 129: ...n 15 35 General Tab 27 Going to a Destination 11 53 54 Go To 53 Go To Point 11 53 GPS Information Page 5 6 GPS Status 5 70 GPS Tab 68 71 Grids 84 H Heading 85 Heading Line 29 Hide Numbers 37 Hide Poin...

Page 130: ...avaids Tab 28 Navigation Terms 108 109 NAV Key 1 53 56 82 Nav Line Tab 29 Nearest To Boat 66 Nearest To Destination 66 Nearest To Next 66 Nearest To Other 66 New Waypoint 46 NMEA 86 90 96 NMEA Interfa...

Page 131: ...Layout 19 29 40 43 Set Up Sonar 38 Shallow Water Alarm 91 Show Data 25 Show Numbers 37 Show Pointer 37 Signal Strength Bars 68 Simulated Tour 12 Simulator 71 83 Simulator Mode 7 11 17 Simulator Set Po...

Page 132: ...utter On Off 31 U Understanding Sonar 111 115 Understanding the Graph 113 115 Underwater Waypoints 37 Units 84 85 Unit Care 117 User Datum 104 User Waypoint List 50 V View 15 35 W WAAS 69 71 Warnings...

Page 133: ...GPSMAP178C Cover indd 3 6 9 2004 10 01 20 AM...

Page 134: ...04 Garmin Ltd or its subsidiaries Garmin International Inc 1200 East 151st Street Olathe Kansas 66062 U S A Garmin Europe Ltd Unit 5 The Quadrangle Abbey Park Industrial Estate Romsey SO51 9DL U K Gar...

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