Convert Mhast (offshore) to WGS 72BE

Convert coordinates from Mhast (offshore) (EPSG:4705) to WGS 72BE (EPSG:4324) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.

From

Input (lon, lat (decimal degrees))

Output (lon, lat (decimal degrees))

Direct link to this transformation: epsgtransform.com/transform/epsg-4705-to-epsg-4324

Official EPSG transformation from Mhast (offshore) to WGS 72BE

The EPSG Geodetic Parameter Dataset defines 1 transformation between Mhast (offshore) (EPSG:4705) and WGS 72BE (EPSG:4324). Its parameters, accuracy and area of use are listed below.

Mhast (offshore) to WGS 72BE (1)

EPSG:15790±10 m

Method:: Geocentric translations (geog2D domain)
Area of use:: Africa - Angola (Cabinda) and DR Congo (Zaire) - offshore
Scope:: Oil and gas exploration and production.

Parameter	Value	Unit
X-axis translation(tx)	-255	metre
Y-axis translation(ty)	-29	metre
Z-axis translation(tz)	-105	metre

Derived by Oceaneering for CABGOC in 1979. Mean of parameters derived by single point Transit translocation at 2 stations (Mongo Tando and N'To). Applied to single point Transit translocations at other stations to define Mhast (offshore) coordinates.

Convert EPSG:4705 to EPSG:4324 in code

The same transformation with common GIS tools and libraries:

from pyproj import Transformer

transformer = Transformer.from_crs("EPSG:4705", "EPSG:4324", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)

Source: EPSG:4705 — Mhast (offshore)

geographic system using latitude and longitude on an ellipsoid · Area of use: Africa - Angola (Cabinda) and DR Congo (Zaire) - offshore

+proj=longlat +ellps=intl +no_defs +type=crs

More about EPSG:4705 →

Target: EPSG:4324 — WGS 72BE

geographic system using latitude and longitude on an ellipsoid · Area of use: World

+proj=longlat +ellps=WGS72 +towgs84=0,0,1.9,0,0,0.814,-0.38 +no_defs +type=crs

More about EPSG:4324 →

Frequently asked questions

How accurate is converting Mhast (offshore) to WGS 72BE?: The most accurate official EPSG transformation between these systems is accurate to about ±10 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation in a desktop GIS.
Does my data leave the browser when I use this converter?: No. All coordinate transformations are computed locally in your browser using proj4js. The coordinates you enter are never transmitted to any server.

Need the reverse? Convert EPSG:4324 to EPSG:4705 →