The 4th Session of the Assembly of the International Hydrographic Organization (IHO), the highest body of this intergovernmental organization, took place in Monaco from 20 to 23 April 2026. The Assembly was preceded by meetings of the Finance Committee and heads of delegations on 19 April.
The event brought together representatives from 104 IHO Member States, alongside numerous observers from international organisations and industry. This reaffirmed the IHO’s pivotal role as the global forum for decision-making in hydrography, maritime safety, and marine data management. The Republic of Croatia was represented by Vinka Kolić Bubić, Director of the Hydrographic Institute of the Republic of Croatia.
Throughout the session, delegates reviewed the Organization’s progress and discussed proposals across its three main work programmes. A major milestone was the adoption of the new IHO Strategic Plan for 2027–2032, alongside the three-year work programme and budget for 2027–2029. These documents outline the priorities for the future development of global hydrography, driving forward maritime data digitalization, the implementation of S-100 standards, and closer international cooperation.
The key discussions focused on enhancing the availability and interoperability of hydrographic data, development of IHO infrastructure, including the establishment of the IHO Infrastructure Centre in Busan, upgrading standards and strengthening skills and expertise within member states, dedicated thematic debates on the future of smart navigation and ocean mapping, featuring presentations from regional hydrographic commissions.
The session was followed by a lunchtime event on Increasing Gender Balance in Hydrography, organized by the Empowering Women in Hydrography project and the United Kingdom Gender Balance Fund.
Alongside the official plenary sessions, an international exhibition showcased the latest technological breakthroughs in hydrography and marine cartography from member states and industry partners, as well as a vibrant backdrop for bilateral and multilateral networking, whilst also welcoming new member states who have recently joined IHO.
On the last day, the Assembly adopted its key outcomes and held elections for top leadership positions within the IHO. Rear Admiral Luigi Sinapi (Italy) was elected as Secretary-General for a three-year term. Adam Greenland (New Zealand) was elected as Director for a six-year term, commencing on 1 September 2026.
The decisions reached and the newly adopted strategic framework signal a clear step forward in the IHO’s transformation into a modern, digital, and globally harmonised hydrographic data management system. Ultimately, these initiatives will advance navigation safety, support marine environmental protection, and ensure the sustainable use of our oceans.