EPSG systems

EPSG:30200 Trinidad 1903 / Trinidad Grid

Projected system (Cassini-Soldner) in use: Trinidad and Tobago - Trinidad. The full definition below, and conversion in one click.

System record
CodeEPSG:30200
NameTrinidad 1903 / Trinidad Grid
TypeProjected system — Cassini-Soldner
Area of use Trinidad and Tobago - Trinidad
Trinidad and Tobago - Trinidad - onshore and offshore.
Bounds W -62,09° · S 9,83° · E -60,00° · N 11,51°
Countries Trinidad & Tobago
DatumTrinidad 1903
Ellipsoid Clarke 1858 a = 6378293.645208759 m · 1/f = 294.260676369
Base geographic system EPSG:4302 — Trinidad 1903
Unit Clarke's link (E east, N north)
Transformation to WGS 84 Trinidad 1903 to WGS 84 (1) (EPSG:1296) — accuracy 2 m
ScopeEngineering survey, topographic mapping.

Projection parameters

ParameterValueUnit
Latitude of natural origin10.441666666666666degree
Longitude of natural origin-61.333333333333336degree
False easting430000Clarke's link
False northing325000Clarke's link

proj4 definition

+proj=cass +lat_0=10.4416666666667 +lon_0=-61.3333333333333 +x_0=86501.46392052 +y_0=65379.0134283 +a=6378293.64520876 +b=6356617.98767984 +to_meter=0.201166195164 +towgs84=-61.702,284.488,472.052 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:30200.

WKT (ESRI format, the .prj content)

PROJCS["Trinidad_1903_Trinidad_Grid",GEOGCS["GCS_Trinidad_1903",DATUM["D_Trinidad_1903",SPHEROID["Clarke_1858",6378293.64520876,294.260676369261]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Cassini"],PARAMETER["False_Easting",430000.0],PARAMETER["False_Northing",325000.0],PARAMETER["Central_Meridian",-61.3333333333333],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",10.4416666666667],UNIT["Clarke's link",0.201166195164]]

All systems — Trinidad & Tobago

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.