[mkgmap-dev] Garmin

Wed Jan 13 10:34:00 GMT 2010

On 12.01.2010 01:12, Markus wrote:
> Dear professionals,
>
> Mark has made a very nice nautical chart for www.OpenSeaMap.org
> <https://sourceforge.net/projects/openseamap/files/Maps/Garmin/baltic.zip/download>
> It works very well on handhelds!
>
> Next week we will exhibit OpenSeaMap on the boat show
> www.boat-duesseldorf.com (23.-31. January, hall 14/G39).
>
> Now I need your help:
> How can I make working the map on a Garmin nautical chart plotter?
>
> Garmin *GPSmap 525* with SD-slot.
>
> Sub-folder: "Garmin"
> File: "gmapsupp.img"
> Message: "Map format is not supported"
> and: "DK Copenhagen"
>
> Thanks for help!
> Markus
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> mkgmap-dev at lists.mkgmap.org.uk
> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
>    
Found something: (either change in mkgmap source, or with gmaptool on 
the gmapsupp.img):
set "TRE 0-4-23" and it might work.

This is the process to make "old" blue chart maps compatible with newer 
units that accept maps like City Navigator but not old blue chart (like 
gpsmap 620).