VERTCRS["ZH Portugal depth",
    VDATUM["Chart Datum Portugal "],
    CS[vertical,1],
        AXIS["depth (D)",down,
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Hydrography and nautical charting."],
        AREA["Portugal - offshore."],
        BBOX[29.24,-35.58,43.07,-7.25]],
    ID["EPSG",10349]]