Topographic mapping.
Triangulation limited to environs of Nouakchott. Extended in 1982 by satellite translocation from a single station "Ruines" to support Syledis chain for offshore operations. Replaced by Mauritania 1999 (datum code 6602).
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Nouakchott 1965", "ellipsoid": { "name": "Clarke 1880 (RGS)", "semi_major_axis": 6378249.145, "inverse_flattening": 293.465 }, "scope": "Topographic mapping.", "area": "Mauritania - coastal area south of Cape Timiris.", "bbox": { "south_latitude": 16.81, "west_longitude": -16.57, "north_latitude": 19.41, "east_longitude": -15.59 }, "id": { "authority": "EPSG", "code": 6680 } }