IHO S-100

IHO S-100 is the Universal Hydrographic Data Model, the framework standard that succeeds S-57 as the basis for the next generation of marine data products. Built on the ISO 19100 series of geographic standards, S-100 is a model rather than a single product spec: it defines feature and portrayal catalogues from which a family of S-10x product specifications is derived. The decision to designate the planned S-57 Edition 4.0 as S-100 was taken at CHRIS in 2005. The S-100 family includes S-101 for ENCs, S-102 for gridded bathymetry, S-104 for water levels, and S-111 for surface currents, all of which an S-100-capable ECDIS can overlay together.