Garmin gmr 41 User Manual

Thank you for choosing Garmin’s GMR 21/41 marine radar. The 

addition of the GMR 21/41 marine radar to your Garmin Marine 

Network, enhances the capability of your system by adding graphical 

radar data to your Garmin chartplotter.
This manual covers the features and operation of the GMR 21/41 

marine radar when viewed on the Garmin chartplotters. To get the 

most out of your new radar, take time to read this manual and learn 

the operating procedures for your unit in detail.
The Introduction contains information about this manual and the 

Table of Contents.
The Main Pages contain information on the setup and operation of the 

GMR 21/41. 
The Appendix contains information such as specifications and license 

requirements. You can also find warranty and FCC information in the 

Appendix. 
Use the Index as a key word search to help you find information more 

quickly.

•   This manual refers to the radome hardware as the “scanner,” 

“radar,” or “GMR 21/41.” These terms can be used 

interchangeably.

•   This manual uses the term “chartplotter” when referring to a 

Garmin GPSMAP 3000 series multi-function display.

•   This manual uses the term “Radar Page.” The Radar Page is 

a dedicated page on the Garmin chartplotter showing radar 

information. Radar information can be displayed as a split 

screen on any of the chartplotter main pages.     

•   This manual uses the term “highlight” when referring to the 

on-screen cursor. To highlight something, use the Rocker key 

on the chartplotter to move  the cursor to the desired item. The 

on-screen cursor is represented by a highlighted yellow box.

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