Oil and gas exploration and production.
Origin coordinates determined by Transit single point position using 32 passes and transformed from WGS72BE using transformation code 15790. Differs from Mhast (onshore) by approximately 10m. Replaced in 1987 by Malongo 1987 (code 6259).
Angola (Cabinda) - offshore; The Democratic Republic of the Congo (Zaire) - offshore.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "Mhast (offshore)", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 }, "scope": "Oil and gas exploration and production.", "area": "Angola (Cabinda) - offshore; The Democratic Republic of the Congo (Zaire) - offshore.", "bbox": { "south_latitude": -6.04, "west_longitude": 10.53, "north_latitude": -5.05, "east_longitude": 12.37 }, "id": { "authority": "EPSG", "code": 6705 } }