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UN Ocean Decade Conference

The IHO and the OECD are co-hosting a satellite event during the UN Ocean Decade conference in Barcelona. Entitled "The Seabed Data We Need for the Ocean We Want," this session aims to look at the importance of advancing our understanding of the ocean and fostering increased investment in related activities.

Council Members Discuss Progress in Transition to Smart Navigation and More

130 participants representing 45 Member States, Observers and partner organizations gathered at the IHO Secretariat in Monaco and online for the annual meeting of the Council from 15-17 October. Participants discussed topics covering education and training, technology, a potential new infrastructure center and of course the transition to smart navigation. With the provision of products and services scheduled to begin in January 2026, many of the discussions focused on progress with the implementation of S-100, the Universal Hydrographic Data Model. The main goals of the meeting were to review the work plan, take stock of progress, and decide on priority areas for the coming year.

IHO S-101 to S-199

Introduction An S-100 based Product Specification defines a data product, and usually includes additional resources such as a machine readable Feature Catalogue and Portrayal Catalogue, a data Encoding Guide and at least one data encoding format. The latest published versions of IHO S-100 based Product Specifications can be downloaded directly from the Product Specification Register of the IHO Geospatial Information (GI) Registry; and links to the Product Specifications can be found on the IHO Standards and Specifications Download Page. A guidance document S-97 for developing Product Specifications can also be downloaded from the IHO Standards and Specifications Download Page. A list of known IHO S-100 based Product Specifications is provided below:

ARHC12 (2022)

12th ARHC Meeting and Symposium on the Hydrography in Arctic St John's, Newfoundland and Labrador, Canada 12 - 16 September 2022 Last Update: 19 December 2022

Major Flag State Joins the International Hydrographic Organization

The global hydrographic community expanded in January 2026 with the accession of Panama to the International Hydrographic Organization (IHO), marking a significant milestone for international maritime cooperation. As one of the world’s major flag states and a strategic hub for global shipping, Panama’s membership is expected to strengthen hydrographic capacity and standards worldwide.

Project Activities

IHO Assembly sets the priorities for the next 3 years

The IHO Assembly has finished after 3 days of productive meetings. From 16 to 18 November IHO Member States were able to discuss how to move forward on work items, with the Assembly being held by videoconference.

S-100 FAQ's

S-57 Frequently Asked Questions

7th Council Meeting (2023)

Monaco, IHO Secretariat 17 - 19 October 2023 Last Update: 12 November 2023