Search results

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)

HSSC15 (2023)

IHO Hydrographic Services and Standards Committee (HSSC) 15th HSSC Meeting Helsinki, Finland 5 - 9 June 2023   Last Update: 1 August 2023    

Winner of the 2026 Ex Abyssis ad Alta IHO Award Announced

The recipient of the 2026 Ex Abyssis ad Alta Award for Hydrographic Excellence is a true combination of intelligence, competence, and kindness.  

Global hydrographic community to gather in Monaco for pivotal International Hydrographic Organization Assembly

Government representatives, maritime authorities, international organizations, and industry leaders from across the world will gather in Monaco from 20 to 23 April 2026 for the Assembly of the International Hydrographic Organization (IHO), the principal global forum for decisions on hydrography, seabed mapping, and maritime data standards.

Women in Hydrography: New Data Reveal Gains in Leadership, Gaps in Workforce Representation

The latest data on the number of men and women working in hydrography have been released. With 51 IHO Member States answering the EWH 2025 survey, the results reveal advancements in some areas but also challenges.

Policy on the Use of IHO Logos, Branding, and Materials by External Stakeholders

DOCUMENT ARCHIVE

    Important Notice System Decommissioning and Transition to New Platform

Hydrography discussed at the UN Ocean Conference

The IHO organized a side event on the role of marine data to help address the competing needs of a broad range of ocean stakeholders at the UN Ocean Conference in Lisbon on 28 June 2022. With many sessions during the week highlighting the need for baseline data and ocean mapping to support decision-making, this side event enabled panellists to draw attention to the central role hydrography can play in these endeavours.

Navigation Warnings on the Web

The following map shows the limits of the 21 Operational NAVAREAs.   NAVAREA Implementation Status and links to NAVAREA Coordinators’ website https://iho.int/en/iridium-safetycast-implementation-status (Note not all NAVAREA Coordinators publish warnings on the World Wide Web, some only provide Notice to Mariners.) Click here for a full list of contact details for all NAVAREA Coordinators  NB The availability of Navigational Warnings on the web does not relieve Masters / Captains of the requirement to receive Navigational Warnings via IMO/IHO approved broadcast systems, as websites are not continuously updated and not necessarily monitored for correctness.