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Details
Item Type : Simple Attribute
Domain : IHO Hydro
AlphaCode : VERDAT
Simple AttributeName: Vertical datum
Alias : VERDAT
CamelCase : Unspecified
Data Type : Enumeration (Show)
Definition : The datum to which both heights (vertical datum, see S-57 Part 3) and soundings (sounding datum, see S-57 Part 3) are referred.
Reference :
Definition Source :
Similarity to Source : Unspecified
Int1 :
S4 :
Remarks : When the vertical datum is unknown, such as water areas above locks, the value 'local datum' is to be used, and further details may be encoded using 'INFORM'. The +0.3m approximation quoted in the 'approximate' levels is somehow arbitrary and follows the British example of their definition for 'approximate LAT'.
Management Details
Proposal Type : Addition
Submitting Organization : unknown
Proposed Change : NULL
Justification : NULL
Proposed :
Accepted : 2000-11-01
Amended :
Successor : VERDAT
Predecessor : -


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