The datasets distributed with PyFerret and Ferret  may be downloaded from the Datasets GitHub page. The datasets are used for creating land outlines and masks, and also used by example and tutorial scripts.  The datasets that are used by "go land" and "go land_detail" to draw land boundaries, national borders, rivers, and so forth on maps.
 

Smaller subset of Ferret Datasets (fer_dsets_smaller.tar.gz)

Miscellaneous Datasets:

• 5 Minute Topographic Dataset (etopo05.nc.Z) - This data is currently part of the standard Ferret datasets distribution.
• Multi-file netCDF example datasets (mc_datasets.tar.Z)