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Introduction
Preface and
Registration
)
Preface
Congratulations on choosing one of the most advanced marine navigation systems available! The
Garmin GPSMAP
®
188/188C/238 Sounders utilize the proven performance of Garmin GPS and full fea-
tured mapping to create an unsurpassed marine navigation chartplotters.
This manual covers instructions for the GPSMAP 188, GPSMAP 188C (color), and GPSMAP 232.
Unit operation and specifi cations will be the same on all three models, unless otherwise speci-
fi ed. To get the most out of your new navigation system, take the time to go through this owner’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 188/188C/238 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 opera-
tions of the GPSMAP 188/188C/238 Sounder. This allows you to concentrate on a specifi c topic quickly
and look up detailed information about the GPSMAP 188/188C/238 Sounder.
Customer Service Product Registration
Help us better support you by completing our on-line registration today!
Have the serial number of your GPSMAP 188/188C/238 handy and connect to our web site
(www.garmin.com). Look for the Product Registration link on the Home page. Also, be sure to record
your serial number in the area 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
registration system are now being automated and re-registering your purchase ensures
you the best possible support from Garmin.
188188C238 Manual Intro.indd i 6/30/2003, 3:26:06 PM