Global Mapper Pro

Problems importing from OziExplorer map file using British National Grid calibration references

I think this is a very similar to the problem

When importing an Ozi .map file that has been calibrated using the British National Grid grid letters in the .map file rather than lat/long GM places the referenced raster in the "SV" square which is the most south west square of the BNG. It appears not to be interpreting the grid letters correctly from the .map file and is defaulting to the false origin of the BNG.
I attach a zipped .map file along with the referenced .jpg which is in the NM BNG square, opening it in GM places in the SV square.
Present in Global Mapper v20.1 and I think previous versions too.


  • bmg_bob
    bmg_bob Global Mapper Programmer

    I suggest that you contact Blue Marble Support directly via email ( to address this issue. Please include a detailed description of your workflow, and the file you are trying to load. Thank you.

Sign In or Register to comment.