S-100 Geospatial Information Registry


Welcome to the
S-100 Geospatial
Information Registry
(Version 3.1)

This registry is owned by the International Hydrographic Organization (IHO) and is managed by the Secretariat of the IHO. The site contains many registers of hydrographic information together with registers of supplementary information owned by specialist domain experts. Each register type is further sub-divided into domains e.g. hydrographic, nautical publications, ice, inland ENC etc. The administration of this registry conforms to IHO Publication S-99 (Operational Procedures for the Organization and Management of the S-100 Geospatial Information Registry), a copy of which can be downloaded here.

The information contained in the Registry can be freely accessed, however items can only be added or changed by the representatives of approved Submitting Organizations. Application to become a Submitting Organization can be made by fulfilling the requirements of the prerequisite form available hereOnce accepted as a submitting organization you are free to submit proposals to any register. The Registry interface undergoes periodic improvements and any difficulties using this site should be reported to the Registry Manager.

Please note: It is not necessary to be a Submitting Organization in order to request new (S-62) Data Producer codes. Requests for new Data Producer codes, or changes to existing codes should be sent to the following email address (Info@iho.int and tsso@iho.int).



  • Feature


  • Information


  • Simple


  • Complex


  • Listed


Development Status

  • Development Status
    ID Currents Schedule
    S-122 Published
    S-123 Published
    S-101 Published 2018-12-31
  • Development Status
    ID Currents Schedule
    S-100 Published 2018-12-31
    S-412 Development
    S-127 Published
  • Development Status
    ID Currents Schedule
    S-129 Published 2019-06-30
    S-121 Published 2019-06-30
    S-111 Development
  • Development Status
    ID Currents Schedule
    S-104 Testbed
    S-401 Published
    S-124 Testbed
  • Development Status
    ID Currents Schedule
    S-102 Development
    S-128 StakeholderReview 2020-01-01


  • Development


  • Testbed


  • Review


  • Approval


  • Released


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