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Author Topic:   Garmin GPSMAP 178C Basemap In Europe
erik selis posted 06-29-2006 05:52 AM ET (US)   Profile for erik selis   Send Email to erik selis  
Can I use a pre-programmed BlueChart data card for Europe (Zone 2 Atlantic) in a Garmin GPSMAP 178C that has a built-in Basemap for the Americas? Would it have the same accuracy as the same unit with the Atlantic basemap?

The same question as the first but now using a blank data card and downloading the data from a PC using the BlueChart software.



PS: I wrote and asked these questions to the people at the Garmin helpdesk but haven't received an answer. Maybe the knowledgeable people here could help me out. I'm afraid I may have been ripped off for the first time by an on-line company where I purchased the GPS unit although I'm not sure yet.

Chuck Tribolet posted 06-29-2006 10:26 AM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
You shouldn't have a problem. The chip isn't dependent on the basemap.
If there were a problem, there would be lots of stories in
the GPS forums: "I sailed by boat to Europe and the chartplotter
wouldn't work.


erik selis posted 06-29-2006 11:38 AM ET (US)     Profile for erik selis  Send Email to erik selis     
Thanks Chuck, I hope you're right. I read somewhere that the BlueChart data cards enhance the features of the basemap. This made me wonder...


Royboy posted 06-30-2006 02:56 PM ET (US)     Profile for Royboy  Send Email to Royboy     
The BlueChart maps will completely obliterate the basemap, so it doesn't matter what's on it. It's like maps on a table, the basemap is on the table and the blueChart map lays on top of that. You can no longer see the map underneath. When you download maps to your unit or use a chip, you have selected what map is to be "on top". You have the option to turn off downloaded maps, I assume you can do the same thing with chip based maps. On mine, I go to map set-up and there is a list of maps to "check" or "uncheck". "Checking" a map turns it on, "unchecking" turns it off revelaing the basemap underneath. Not something you'd want to do on the fly, but available nevertheless.


erik selis posted 07-01-2006 12:58 AM ET (US)     Profile for erik selis  Send Email to erik selis     
Thanks Roy, for this reassuring information.

The pre-loaded BlueChart data cards are split into 3 categories: small, regular and large. Would this represent the amount of detail available on the charts?



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