Geodesy, engineering survey.
Defined through OSGM geoid model (transformation code 7713). Replaces Fair Isle height, Flannan Isles height, Foula height, North Rona height, St Kilda height and Sule Skerry height (CRS codes 5741, 5748, 5743, 5745, 5747 and 5744) from 2016.
55.38 -3.5
50.26 -9.01
61.01 2.01
-9.01 49.75
2.01 61.01
Definition: OGC Well Known Text
VERT_CS["ODN (Offshore) height", VERT_DATUM["Ordnance Datum Newlyn (Offshore)",2005, AUTHORITY["EPSG","1164"]], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Gravity-related height",UP], AUTHORITY["EPSG","7707"]]
Definition: OGC Well Known Text 2 (2019)
VERTCRS["ODN (Offshore) height", VDATUM["Ordnance Datum Newlyn (Offshore)"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]], USAGE[ SCOPE["Geodesy, engineering survey."], AREA["United Kingdom (UK) - offshore between 2km from shore and boundary of UKCS within 49°45'N to 61°N and 9°W to 2°E."], BBOX[49.75,-9.01,61.01,2.01]], ID["EPSG",7707]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalCRS", "name": "ODN (Offshore) height", "datum": { "type": "VerticalReferenceFrame", "name": "Ordnance Datum Newlyn (Offshore)" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] }, "scope": "Geodesy, engineering survey.", "area": "United Kingdom (UK) - offshore between 2km from shore and boundary of UKCS within 49°45'N to 61°N and 9°W to 2°E.", "bbox": { "south_latitude": 49.75, "west_longitude": -9.01, "north_latitude": 61.01, "east_longitude": 2.01 }, "id": { "authority": "EPSG", "code": 7707 } }
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 ( 7707, 'EPSG', 7707, '+vunits=m +no_defs +type=crs', 'VERT_CS["ODN (Offshore) height",VERT_DATUM["Ordnance Datum Newlyn (Offshore)",2005,AUTHORITY["EPSG","1164"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","7707"]]');