EPSG:5518 — CI1971 / Chatham Islands Map Grid

Projected · New Zealand - Chatham Islands group

Export Formats

OGC WKT

PROJCS[
    "CI1971 / Chatham Islands Map Grid",
    GEOGCS[
        "Chatham Islands 1971",
        DATUM[
            "Chatham_Islands_Datum_1971",
            SPHEROID["International 1924",6378388,297],
            TOWGS84[175,-38,113,0,0,0,0]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4672"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",-44],
    PARAMETER["central_meridian",-176.5],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",350000],
    PARAMETER["false_northing",650000],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","5518"]
]

WKT2

PROJCRS[
    "CI1971 / Chatham Islands Map Grid",
    BASEGEOGCRS[
        "Chatham Islands 1971",
        DATUM[
            "Chatham Islands Datum 1971",
            ELLIPSOID[
                "International 1924",
                6378388,
                297,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7022]
            ],
            ID["EPSG",6672]
        ],
        ID["EPSG",4672]
    ],
    CONVERSION[
        "Chatham Islands Map Grid",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            -44,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            -176.5,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            1,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            350000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            650000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",5517]
    ],
    CS[Cartesian,2,ID["EPSG",4500]],
    AXIS["Northing (N)",north],
    AXIS["Easting (E)",east],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",5518]
]

PROJ.4

+proj=tmerc +lat_0=-44 +lon_0=-176.5 +k=1 +x_0=350000 +y_0=650000 +ellps=intl +towgs84=175,-38,113,0,0,0,0 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:5518", "+proj=tmerc +lat_0=-44 +lon_0=-176.5 +k=1 +x_0=350000 +y_0=650000 +ellps=intl +towgs84=175,-38,113,0,0,0,0 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 5518,
  "name": "CI1971 / Chatham Islands Map Grid",
  "kind": "projected",
  "area": "New Zealand - Chatham Islands group",
  "unit": "metre",
  "bbox": [
    -44.64,
    -177.25,
    -43.3,
    -175.54
  ],
  "proj4": "+proj=tmerc +lat_0=-44 +lon_0=-176.5 +k=1 +x_0=350000 +y_0=650000 +ellps=intl +towgs84=175,-38,113,0,0,0,0 +units=m +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (5518, 'EPSG', 5518, '+proj=tmerc +lat_0=-44 +lon_0=-176.5 +k=1 +x_0=350000 +y_0=650000 +ellps=intl +towgs84=175,-38,113,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["CI1971 / Chatham Islands Map Grid",GEOGCS["Chatham Islands 1971",DATUM["Chatham_Islands_Datum_1971",SPHEROID["International 1924",6378388,297],TOWGS84[175,-38,113,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4672"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",-44],PARAMETER["central_meridian",-176.5],PARAMETER["scale_factor",1],PARAMETER["false_easting",350000],PARAMETER["false_northing",650000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","5518"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=tmerc"
  "+lat_0=-44"
  "+lon_0=-176.5"
  "+k=1"
  "+x_0=350000"
  "+y_0=650000"
  "+ellps=intl"
  "+towgs84=175,-38,113,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

5518=PROJCS["CI1971 / Chatham Islands Map Grid",GEOGCS["Chatham Islands 1971",DATUM["Chatham_Islands_Datum_1971",SPHEROID["International 1924",6378388,297],TOWGS84[175,-38,113,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4672"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",-44],PARAMETER["central_meridian",-176.5],PARAMETER["scale_factor",1],PARAMETER["false_easting",350000],PARAMETER["false_northing",650000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","5518"]]

Related Coordinate Systems

Available Transformations (1)

Transformations inherited from base CRS: EPSG:4672 (Chatham Islands 1971)

Transformation	Source → Target	Accuracy (m)
CI1971 to WGS 84 (1)	4672 → 4326	26

Other CRS using Chatham Islands Datum 1971

Frequently Asked Questions

How do I add EPSG:5518 to GeoServer?

Add the following definition to your GeoServer configuration:

5518=PROJCS["CI1971 / Chatham Islands Map Grid",GEOGCS["Chatham Islands 1971",DATUM["Chatham_Islands_Datum_1971",SPHEROID["International 1924",6378388,297],TOWGS84[175,-38,113,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4672"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",-44],PARAMETER["central_meridian",-176.5],PARAMETER["scale_factor",1],PARAMETER["false_easting",350000],PARAMETER["false_northing",650000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","5518"]]

Read the full GeoServer guide →

How do I add EPSG:5518 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (5518, 'EPSG', 5518, '+proj=tmerc +lat_0=-44 +lon_0=-176.5 +k=1 +x_0=350000 +y_0=650000 +ellps=intl +towgs84=175,-38,113,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["CI1971 / Chatham Islands Map Grid",GEOGCS["Chatham Islands 1971",DATUM["Chatham_Islands_Datum_1971",SPHEROID["International 1924",6378388,297],TOWGS84[175,-38,113,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4672"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",-44],PARAMETER["central_meridian",-176.5],PARAMETER["scale_factor",1],PARAMETER["false_easting",350000],PARAMETER["false_northing",650000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","5518"]]');

Read the full PostGIS guide →

How do I add EPSG:5518 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=tmerc"
  "+lat_0=-44"
  "+lon_0=-176.5"
  "+k=1"
  "+x_0=350000"
  "+y_0=650000"
  "+ellps=intl"
  "+towgs84=175,-38,113,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:5518 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:5518", "+proj=tmerc +lat_0=-44 +lon_0=-176.5 +k=1 +x_0=350000 +y_0=650000 +ellps=intl +towgs84=175,-38,113,0,0,0,0 +units=m +no_defs +type=crs");

Read the full Proj4js guide →