Cascais depth to ZH Portugal depth (1)
Coordinate Reference Systems
Remarks
The Zero Hidrografico (CD Portugal) surface is defined to be 2.0m below the Cascais vertical reference surface offshore mainland Portugal and 2.08 metres below the Cascais vertical reference surface in the Tagus estuary off Lisbon (see CT 10381).
Frequently Asked Questions
What is the accuracy of the Cascais depth to ZH Portugal depth transformation?
This is an exact transformation (EPSG:10380) with no loss of precision (0m accuracy) using the Vertical Offset method. Area of use: Portugal - mainland - nearshore.