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INTRODUCTION
Preface
Congratulations on choosing one of the most advanced depth sounding and
marine navigation systems available! The GARMIN GPSMAP 135 Sounder com-
bines the proven performance of GARMIN GPS, powerful G-Chart electronic
charting, and full featured depth sounding into one unit to create an unsurpassed
marine navigation and fishfinding package.
To get the most out of your new navigation and sounding 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 parts for your convenience.
Part One introduces you to the GPSMAP 135 Sounder and provides a Getting
Started tour so that you may become more familiar with the unit. This section will
provide you with a basic working knowledge necessary to use the unit to its fullest
potential.
Part Two is divided into sections that provide detailed references to the
advanced features and operations of the GPSMAP 135 Sounder. This allows you to
concentrate on a specific topic quickly, without reading through entire portions of
text that you may not need. This section can be used to look up detailed informa-
tion about the GPSMAP 135 Sounder.
Preface
WARNING!
The electronic chart is an aid to navigation and is
designed to facilitate the use of authorized govern-
ment charts, not replace them. Only official gov-
ernment charts and notices to mariners contain
all information needed for safe navigation – and,
as always, the user is responsible for their
prudent use.
GPS 135 Rev C 8/4/98 4:17 PM Page v