Humminbird Helix5 sonar-GPS

[newfielander]

Hi guys i have a Helix5, its a Sonar-GPS, serial number 15052803-0051. I'm trying to find out if there are some sort of maps available that i can load to this thing through the SD card port, so i can use this as a GPS on land. My plans were to connect it to my snowmobile. Yes i know i can buy the proper GPS made for a snowmobile, but this thing fits perfectly on the dash, near my speedometer. If anyone knows the name of any maps/charts that's compatible with this, please let me know
Thanks so much for the help!

[Princeton_Man]

I guess it would be great for ice fishing.