VERTCRS["HKCD depth",VDATUM["Hong Kong Chart Datum"],CS[vertical,1],AXIS["depth (D)",down,LENGTHUNIT["metre",1]],USAGE[SCOPE["Hydrography and nautical charting."],AREA["China - Hong Kong - offshore."],BBOX[22.13,113.76,22.58,114.51]],ID["EPSG",5739]]