Background
At its fifteenth session, UN-GGIM, through , noted the establishment of the UN-GGIM–IHO Joint Working Group on Marine Geospatial Information, consolidating the UN-GGIM Working Group on Marine Geospatial Information and the IHO Marine Spatial Data Infrastructure Working Group, and noted its terms of reference and working modalities. The Committee recognized that the consolidation would optimize resources and strengthen global coordination.
The Committee also noted the Working Group’s workplan, compilation report and future priorities, including the integration of terrestrial, maritime, built and cadastral domains, with a focus on the land–sea interface and integrated national strategies. It highlighted the importance of integrated geodetic information and unified reference systems (horizontal and vertical datums) to support climate resilience, the blue economy, coastal development, biodiversity and disaster risk management.
Marine geospatial information is essential to improve the availability and interoperability of high-quality, timely and reliable geospatial information for inland waters, seas and oceans, supporting governance, planning and sustainable development. Building on adopted standards and good practices, the Joint Working Group promotes integrated marine and terrestrial spatial data infrastructures within national geospatial information infrastructures, including standards and guidance for mapping the seas and oceans and integrating marine observations.
Co-Chairs

Parry Oei
Maritime and Port AuthoritySingapore

Caitlin Boatright
National Geospatial-Intelligence AgencyUnited States of America
(as of March 2024)
Member States | Non-Member State |
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Chiang MaiThailand
First Expert Meeting of the UN-GGIM and IHO Joint Working Group on Marine Geospatial Information
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Indonesia
Sixth expert meeting of the Working Group on Marine Geospatial Information and International Seminar on UN-GGIM
Italy
Fourth Expert Meeting of the Working Group on Marine Geospatial Information
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Third Expert Meeting of the Working Group on Marine Geospatial Information and International Seminar on United Nations Global Geospatial Information Management
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- Virtual Meeting
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Germany
Second expert meeting of the Working Group on Marine Geospatial Information
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Republic of Korea
First expert meeting of the Working Group on Marine Geospatial Information
United States of America
- Caitlin Boatright Co-Chair, UN-GGIM–IHO Joint Working Group on Marine Geospatial Information
Introduction
Integrated marine geospatial information.
Sixteenth SessionJWGMGI Workplan
JWGMGI Workplan
Ocean & Sea Governance: Why Marine Geospatial Information Matters
E/C.20/2026/14/Add.1 – Report
Integrated marine geospatial information.
Sixteenth SessionE/C.20/2026/14 – Summary
Integrated marine geospatial information.
Sixteenth Session- UN-GGIM Secretariat
UN-GGIM Overview and Recent decisions on Land Administration
E/C.20/2025/14/Add.1 – Report
Integrated marine geospatial information
Fifteenth SessionSingapore
- Parry Oei, Chair, Working Group on Marine Geospatial Information