EPSG
Survey and Mapping Office, Lands Department. Http://www.info.gov.hk/landsd/mapping/tindex.htm
2009-06-02
Hydrography and nautical charting.
Chart datum is 0.15 metres below Hong Kong Principal Datum (code 5135) and 1.38m below MSL at Quarry Bay.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalReferenceFrame", "name": "Hong Kong Chart Datum", "scope": "Hydrography and nautical charting.", "area": "China - Hong Kong - offshore.", "bbox": { "south_latitude": 22.13, "west_longitude": 113.76, "north_latitude": 22.58, "east_longitude": 114.51 }, "id": { "authority": "EPSG", "code": 5136 } }