Topographic mapping.
In some references incorrectly attributed to the Maldives. See datum code 6684.
The Democratic Republic of the Congo (Zaire) - onshore and offshore.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Gandajika", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 }, "scope": "Topographic mapping.", "area": "The Democratic Republic of the Congo (Zaire) - onshore and offshore.", "bbox": { "south_latitude": -13.46, "west_longitude": 11.79, "north_latitude": 5.39, "east_longitude": 31.31 }, "id": { "authority": "EPSG", "code": 6685 } }