Hydrography and nautical charting.
For offshore engineering on UKCS, use Ordnance Datum Newlyn (Offshore).
55.66 -6.35
47.42 -16.1
63.89 3.4
-16.1 47.42
3.4 63.89
Definition: OGC Well Known Text 2 (2019)
VERTCRS["MSL UK & Ireland VORF08 depth", VDATUM["Mean Sea Level UK & Ireland VORF08"], CS[vertical,1], AXIS["depth (D)",down, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Hydrography and nautical charting."], AREA["Ireland and United Kingdom (UK) (including Isle of Man and Channel Islands) - inshore, nearshore and offshore."], BBOX[47.42,-16.1,63.89,3.4]], ID["EPSG",10150]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "MSL UK & Ireland VORF08 depth", "datum": { "type": "VerticalReferenceFrame", "name": "Mean Sea Level UK & Ireland VORF08" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Depth", "abbreviation": "D", "direction": "down", "unit": "metre" } ] }, "scope": "Hydrography and nautical charting.", "area": "Ireland and United Kingdom (UK) (including Isle of Man and Channel Islands) - inshore, nearshore and offshore.", "bbox": { "south_latitude": 47.42, "west_longitude": -16.1, "north_latitude": 63.89, "east_longitude": 3.4 }, "id": { "authority": "EPSG", "code": 10150 } }
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"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 10150, 'EPSG', 10150, '+vunits=m +no_defs +type=crs', 'VERT_CS["MSL UK & Ireland VORF08 depth",VERT_DATUM["Mean Sea Level UK & Ireland VORF08",2005,AUTHORITY["EPSG","1330"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Depth",DOWN],AUTHORITY["EPSG","10150"]]');