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10th Meeting of S-100 Working Group. Bali, Indonesia. 22 – 26 September 2025.

UNCLOS and the international legal framework suitability for ocean activities discussed at ABLOS Conference

The 12th IHO-IAG ABLOS conference brought together participants from all over the world to discuss how the global regulatory framework and the United Nations Convention on the Law of the Sea (UNCLOS) addresses some of today's most pressing ocean-related challenges. Organised in partnership with the Qatari Standing Committee of the Convention on the Law of the Sea, the 280 participants learned about achievements of UNCLOS, challenges it faces in today’s international context, and gaps to be addressed. One question which emerged repeatedly was whether the convention was flexible enough to address modern issues.

MSDIWG15 (2024)

15th MEETING OF THE IHO MARINE SPATIAL DATA INFRASTRUCTURES WORKING GROUP (MSDIWG15) Bali, Indonesia (4 March to 8 March 2024) (including joint sessions with the UN Working Group on Marine Geospatial Information  and the OGC Marine DWG)

Capacity-Building Sub-Committee discusses new projects and challenges

The Capacity Building Sub-Committee (CBSC) met last week in Denpasar, Bali, for its annual meeting where participants discussed training and education initiatives. Hosted by Pushidrosal, the Hydrographic and Oceanographic Centre of the Indonesian Navy, the gathering enabled the Committee members to review projects such as the IHO e-learning centre and achievements of the Empowering Women in Hydrography project.

Joint IHO-Singapore Innovation and Technology Laboratory Established in Singapore

Singapore and the International Hydrographic Organization (IHO) launched the Joint IHO-Singapore Innovation and Technology Laboratory on 26 October 2021.

Empowering Women in Hydrography

Despite more and more women working in hydrography, leadership positions are still often occupied by men. In the IHO bodies, only 13% are chaired by women. With the goal of raising awareness about the different jobs available to women in hydrography, and of facilitating them to reach leadership positions, the IHO has launched a new project to “Empower women in Hydrography”.  

S-100 based Product Specifications

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.  A guidance document S-97 for developing Product Specifications can be downloaded from the GI registry. A list of known IHO S-100 based product specifications is provided below;

ARHC Intersessional VTC-01 Meeting (2020)

ARHC Intersessional VTC-01 Meeting 29 April 2020 Last Update: 26 May 2020

External Liaisons

Inter-Governmental Organizations and Non-Governmental Organizations are recognized as observers to be invited to meetings of the Assembly and all subsidiary organs and subordinate bodies of the IHO in which they have an interest and to which they can make a contribution. The IHO maintains a substantive number of Memoranda of Understanding and Co-operative Agreements with relevant organizations active in the maritime domain.