Filter
Top Products
iii
Introduction
Warnings and Cautions
The GPS system is operated by the United States government, which is solely 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 178C is a precision electronic NAVigation AID (NAVAID),
any NAVAID can be misused or misinterpreted and, therefore, become unsafe.
The electronic chart is an aid to navigation and is designed to facilitate the use of authorized government
charts, not replace them. Only offi cial government charts and notices to mariners contain all information
needed for safe navigation – and, as always, the user is responsible for their prudent use.
Use the GPSMAP 178C 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 178C to all available
navigation sources, including the information from other NAVAIDs, visual sightings, 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 ONLY AS A NAVIGATIONAL AID AND MUST NOT BE USED
FOR ANY PURPOSE REQUIRING PRECISE MEASUREMENT OF DIRECTION, DISTANCE, LOCA-
TION, OR TOPOGRAPHY.
MAP DATA INFORMATION: One of the goals of Garmin is to provide customers with the most
complete and accurate cartography that is available to us at a reasonable cost. We use a combination of
governmental and private data sources, which we identify (as required) in product literature and copy-
right messages displayed to the consumer. Virtually all data sources contain inaccurate or incomplete
data to some degree. This is particularly true outside the United States, where complete and accurate
digital data is either not available or prohibitively expensive.
WARNING: This product, its packaging, and its components contain chemicals known to the State
of California to cause cancer, birth defects, or reproductive harm. This Notice is being provided in
accordance with California’s Proposition 65. If you have any questions or would like additional infor-
mation, please refer to our web site at http://www.garmin.com/prop65.
,
GPSMAP178CManual.indd iii 3/19/2004, 3:09:46 PM