COMPOUNDCRS["SVY21 / Singapore TM + SHD height",
    PROJCRS["SVY21 / Singapore TM",
        BASEGEOGCRS["SVY21",
            DATUM["SVY21",
                ELLIPSOID["WGS 84",6378137,298.257223563,
                    LENGTHUNIT["metre",1]]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            ID["EPSG",4757]],
        CONVERSION["Singapore Transverse Mercator",
            METHOD["Transverse Mercator",
                ID["EPSG",9807]],
            PARAMETER["Latitude of natural origin",1.36666666666667,
                ANGLEUNIT["degree",0.0174532925199433],
                ID["EPSG",8801]],
            PARAMETER["Longitude of natural origin",103.833333333333,
                ANGLEUNIT["degree",0.0174532925199433],
                ID["EPSG",8802]],
            PARAMETER["Scale factor at natural origin",1,
                SCALEUNIT["unity",1],
                ID["EPSG",8805]],
            PARAMETER["False easting",28001.642,
                LENGTHUNIT["metre",1],
                ID["EPSG",8806]],
            PARAMETER["False northing",38744.572,
                LENGTHUNIT["metre",1],
                ID["EPSG",8807]]],
        CS[Cartesian,2],
            AXIS["northing (N)",north,
                ORDER[1],
                LENGTHUNIT["metre",1]],
            AXIS["easting (E)",east,
                ORDER[2],
                LENGTHUNIT["metre",1]]],
    VERTCRS["SHD height",
        VDATUM["Singapore Height Datum"],
        CS[vertical,1],
            AXIS["gravity-related height (H)",up,
                LENGTHUNIT["metre",1]]],
    USAGE[
        SCOPE["Engineering survey, GIS, topographic mapping."],
        AREA["Singapore - onshore and offshore."],
        BBOX[1.13,103.59,1.47,104.07]],
    ID["EPSG",6927]]