PROJCRS["Helle 1954 / Jan Mayen Grid",BASEGEOGCRS["Helle 1954",DATUM["Helle 1954",ELLIPSOID["International 1924",6378388,297,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4660]],CONVERSION["Jan Mayen Grid",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",-8.5,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",1,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False easting",50000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False northing",-7800000,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["northing (x)",north,ORDER[1],LENGTHUNIT["metre",1]],AXIS["easting (y)",east,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["Topographic mapping."],AREA["Jan Mayen - onshore."],BBOX[70.75,-9.17,71.24,-7.87]],ID["EPSG",3058]]