EPSG
US NGA GeoTrans software v3.4 and other industry sources.
2014-07-30
Engineering survey, harbour hydrography.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Aden 1925", "ellipsoid": { "name": "Clarke 1880 (RGS)", "semi_major_axis": 6378249.145, "inverse_flattening": 293.465 }, "scope": "Engineering survey, harbour hydrography.", "area": "Yemen - South Yemen onshore mainland.", "bbox": { "south_latitude": 12.54, "west_longitude": 43.37, "north_latitude": 19, "east_longitude": 53.14 }, "id": { "authority": "EPSG", "code": 1135 } }