{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"GeographicCRS","name":"SZCTW-IRF","datum":{"type":"GeodeticReferenceFrame","name":"SZCTW Intermediate Reference Frame","ellipsoid":{"name":"GRS 1980","semi_major_axis":6378137,"inverse_flattening":298.257222101}},"coordinate_system":{"subtype":"ellipsoidal","axis":[{"name":"Geodetic latitude","abbreviation":"Lat","direction":"north","unit":"degree"},{"name":"Geodetic longitude","abbreviation":"Lon","direction":"east","unit":"degree"}]},"scope":"Engineering survey, GIS, topographic mapping.","area":"United Kingdom (UK) - Sizewell power station site and  rail and road routes related to the site.","bbox":{"south_latitude":52.13,"west_longitude":1.35,"north_latitude":52.38,"east_longitude":1.7},"id":{"authority":"EPSG","code":11466},"remarks":"Intermediate CRS created in 2026 to assist the emulation of the ETRS89 / SZCTW SnakeGrid projected CRS through transformation ETRS89-GBR [OSNet v2009] to SZCTW-IRF (1) (code 11467) used in conjunction with the SZCTW-TM map projection (code 11468)."}