PROJCS["TROMELIN SGM 1956 MERCATOR DIRECTE",
    GEOGCS["Tromelin geographiques (dms)",
        DATUM["TROMELIN (SGM 1956)",
            SPHEROID["International 1924",6378388,297,
                AUTHORITY["EPSG","7022"]],
            AUTHORITY["IGNF","REG3820001"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["IGNF","TROM56G"]],
    PROJECTION["Mercator_1SP"],
    PARAMETER["central_meridian",0],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",20000000],
    PARAMETER["false_northing",10000000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["IGNF","TROM56MD"]]