AIOC95 height


Unit: metre

Geodetic CRS: AIOC95 height

Datum: AIOC 1995

Data source: EPSG

Information source: BP

Revision date: 2008-03-14

Scope: Oil and gas exploration and production.

Remarks: AIOC95 datum is 1.7m above Caspian datum and 26.3m below Baltic datum. Also used by AIOC and BP as the depth system for all offshore Azerbaijan activities (see CRS code 5734).

Area of use: Azerbaijan - Caspian offshore and onshore Sangachal terminal.

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

Center coordinates
40.24 50.19

Projected bounds:
37.89 48.66
42.59 51.73

WGS84 bounds:
48.66 37.89
51.73 42.59

Azerbaijan - Caspian offshore and onshore Sangachal terminal.
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Definition: Well Known Text (WKT)

VERT_CS["AIOC95 height",
    VERT_DATUM["AIOC 1995",2005],
    AXIS["Gravity-related height",UP],

Definition: ESRI WKT


Definition: PROJ.4

+vunits=m +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:5797","+vunits=m +no_defs +type=crs");

Definition: JSON

    "$schema": "https://proj.org/schemas/v0.4/projjson.schema.json",
    "type": "VerticalCRS",
    "name": "AIOC95 height",
    "datum": {
        "type": "VerticalReferenceFrame",
        "name": "AIOC 1995"
    "coordinate_system": {
        "subtype": "vertical",
        "axis": [
                "name": "Gravity-related height",
                "abbreviation": "H",
                "direction": "up",
                "unit": "metre"
    "scope": "Oil and gas exploration and production.",
    "area": "Azerbaijan - Caspian offshore and onshore Sangachal terminal.",
    "bbox": {
        "south_latitude": 37.89,
        "west_longitude": 48.66,
        "north_latitude": 42.59,
        "east_longitude": 51.73
    "id": {
        "authority": "EPSG",
        "code": 5797

Definition: GeoServer

5797=VERT_CS["AIOC95 height",VERT_DATUM["AIOC 1995",2005],UNIT["metre",1],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5797"]]

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 ( 5797, 'EPSG', 5797, '+vunits=m +no_defs +type=crs', 'VERT_CS["AIOC95 height",VERT_DATUM["AIOC 1995",2005],UNIT["metre",1],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5797"]]');

Definition: OGC WKT

VERT_CS["AIOC95 height",VERT_DATUM["AIOC 1995",2005],UNIT["metre",1],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5797"]]

Definition: OGC WKT 2 (2019)

VERTCRS["AIOC95 height",VDATUM["AIOC 1995"],CS[vertical,1],AXIS["gravity-related height (H)",up,LENGTHUNIT["metre",1]],USAGE[SCOPE["Oil and gas exploration and production."],AREA["Azerbaijan - Caspian offshore and onshore Sangachal terminal."],BBOX[37.89,48.66,42.59,51.73]],ID["EPSG",5797]]