VERTCRS["Yellow Sea 1956 height",VDATUM["Yellow Sea 1956"],CS[vertical,1],AXIS["gravity-related height (H)",up,LENGTHUNIT["metre",1]],USAGE[SCOPE["Geodesy, engineering survey."],AREA["China - onshore."],BBOX[18.11,73.62,53.56,134.77]],ID["EPSG",5736]]