Belfast height


Unit: metre

Geodetic CRS: Belfast height

Datum: Belfast Lough

Data source: EPSG

Information source: Ordnance Survey of Northern Ireland.

Revision date: 2008-03-14

Scope: Topographic mapping (large scale).

Remarks: Malin Head height (CRS code 5731) used for medium and small scale topographic mapping.

Area of use: United Kingdom (UK) - Northern Ireland (Ulster) - onshore.

Coordinate system: Vertical CS. Axis: height (H). Orientation: up. UoM: m.

Center coordinates
54.66 -6.76

Projected bounds:
53.96 -8.18
55.36 -5.34

WGS84 bounds:
-8.18 53.96
-5.34 55.36

United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
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Definition: Well Known Text (WKT)

VERT_CS["Belfast height",
    VERT_DATUM["Belfast Lough",2005],
    AXIS["Gravity-related height",UP],

Definition: ESRI WKT


Definition: PROJ.4

+vunits=m +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:5732","+vunits=m +no_defs +type=crs");

Definition: JSON

    "$schema": "https://proj.org/schemas/v0.4/projjson.schema.json",
    "type": "VerticalCRS",
    "name": "Belfast height",
    "datum": {
        "type": "VerticalReferenceFrame",
        "name": "Belfast Lough"
    "coordinate_system": {
        "subtype": "vertical",
        "axis": [
                "name": "Gravity-related height",
                "abbreviation": "H",
                "direction": "up",
                "unit": "metre"
    "scope": "Topographic mapping (large scale).",
    "area": "United Kingdom (UK) - Northern Ireland (Ulster) - onshore.",
    "bbox": {
        "south_latitude": 53.96,
        "west_longitude": -8.18,
        "north_latitude": 55.36,
        "east_longitude": -5.34
    "id": {
        "authority": "EPSG",
        "code": 5732

Definition: GeoServer

5732=VERT_CS["Belfast height",VERT_DATUM["Belfast Lough",2005],UNIT["metre",1],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5732"]]

Definition: MapServer - MAPfile


Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+vunits=m +no_defs +type=crs">
	<Layer srs="+vunits=m +no_defs +type=crs">

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 5732, 'EPSG', 5732, '+vunits=m +no_defs +type=crs', 'VERT_CS["Belfast height",VERT_DATUM["Belfast Lough",2005],UNIT["metre",1],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5732"]]');

Definition: OGC WKT

VERT_CS["Belfast height",VERT_DATUM["Belfast Lough",2005],UNIT["metre",1],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5732"]]

Definition: OGC WKT 2 (2019)

VERTCRS["Belfast height",VDATUM["Belfast Lough"],CS[vertical,1],AXIS["gravity-related height (H)",up,LENGTHUNIT["metre",1]],USAGE[SCOPE["Topographic mapping (large scale)."],AREA["United Kingdom (UK) - Northern Ireland (Ulster) - onshore."],BBOX[53.96,-8.18,55.36,-5.34]],ID["EPSG",5732]]