S-100 Universal Hydrographic Data Model

What is the IHO S-100 Standard?

The S-100 Standard is a framework document that is intended for the development of digital products and services for hydrographic, maritime and GIS communities. It comprises multiple parts that are based on the geospatial standards developed by the International Organization for Standardization, Technical Committee 211 (ISO/TC211).


How Frequently is the S-100 Standard Updated?

The IHOs S-100 Working Group (responsible for maintaining the Standard) recognizes that the standard must evolve in order to cater for new user community requirements and has developed a planned revision cycle for the Standard. User communities are invited to submit proposals for corrections and/or extensions to the standard, for inclusion in the next planned edition.  The planned plan for the S-100 Standard is decided by the Hydrographic Services and Standards Committee.

S-100 Dependent Product Specification Numbers

In order to manage the development of S-100 based products; and with a view to minimizing duplication and encouraging conformity, the IHO Hydrographic Services and Standards Committee (HSSC) allocates S-1XX numbers to be used for the development of S-100 dependent products developed by the IHO. The S-101 to S-199 number range has been allocated for IHO product development. Higher number ranges have been allocated for use by other organizations.  A list of known product specifications under development is provided below:

International Hydrographic Organization (IHO) (S-101 to S-199)

  • S-101 Electronic Navigational Chart (ENC)
  • S-102 Bathymetric Surface
  • S-103 Sub-surface Navigation
  • S-104 Water Level Information for Surface Navigation
  • S-111 Surface Currents
  • S-112 Open - (See Decision HSSC9/38)
  • S-121 Maritime Limits and Boundaries
  • S-122 Marine Protected Areas
  • S-123 Marine Radio Services
  • S-124 Navigational Warnings
  • S-125 Marine Navigational Services
  • S-126 Marine Physical Environment
  • S-127 Marine Traffic Management
  • S-128 Catalogue of Nautical Products
  • S-129 Under Keel Clearance Management (UKCM)
  • S-130 Polygonal Demarcations of Global Sea Areas
  • S-131 Marine Harbour Infrastructure
  • S-164 IHO Test Data Sets for S-100 ECDIS

International Associateion of Light Authorities (IALA) (S-201 to S-299)

  • S-201 Aids to Navigation Information
  • S-210 Inter-VTS Exchange Format
  • S-211 Port Call Message Format
  • S-230 Application Specific Messages
  • S-240 DGNSS Station Almanac
  • S-245 eLoran ASF Data
  • S-246 eLoran Station Almanac
  • S-247 Differential eLoran Reference Station Almanac

Intergovernmental Oceanographic Commission (IOC) (S-301 to S-399)

  • (None proposed yet)

Inland ENC Harmonization Group (IEHG) (S-401 to S-402)

  • S-401 IEHG Inland ENC
  • S-402 IEHG Bathymetric Inland ENC

Joint Technical Commission for Oceanography and Marine Meteorology (WMO/IOC JCOMM) (S-411 to S412)

  • S-411 JCOMM Ice Information
  • S-412 JCOMM Weather Overlay
  • S-413 Weather and Wave Conditions
  • S-414 Weather and Wave Observations

International Electrotechnical Commission - Technical Committee 80 (IEC-TC80) Numbers (S-421 to S-430

  • S-421 Route Plan

NATO Geospatial Maritime Working Group (GMWG) for Additional Military Layers (AML) Numbers (S-501 to 525)

Other S-100 Related Resources

  • S-100 Github Repository - UML Model and Schemas
  • Base Camp - Collaborative Web Worksite
  • S-100 brochure (May 2017)
  • S-99 Operational Procedures for the Organization and Management of the S-100 Geospatial Information Registry
  • IHO GI Registry

More About S-100

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Last modified: 14/01/2021 - 14:34