PROJCS["Helle 1954 / Jan Mayen Grid",GEOGCS["Helle 1954",DATUM["Helle_1954",SPHEROID["International 1924",6378388,297],TOWGS84[982.6087,552.753,-540.873,32.39344,-153.25684,-96.2266,16.805]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4660"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-8.5],PARAMETER["scale_factor",1],PARAMETER["false_easting",50000],PARAMETER["false_northing",-7800000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3058"]]