{"$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}}