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DCDB
In 1988, the U.S. National Geophysical Data Centre (NGDC) offered to host and operate a Worldwide digital oceanic bathymetry data center on behalf of the IHO Member States. This led to the official establishment (in June 1990) of the IHO Data Centre for Digital Bathymetry (DCDB). Data provided by the IHO Member States are available for download from the DCDB web site. It is possible to search, view or download all available data using the DCDB Web Map Server and GEODAS interfaces (please see below).
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.
Finance Documents and Reports
The IHO operates under a 3 year budget approved by the Assembly and an annual operational Budget endorsed by the Council and approved by the Member-States through correspondence. The Finance Committee Officers are used to meet in spring every year to approve the audit report of the Secretariats operations. The Member States are informed via Finance Circular Letters which can be downloaded from the Circular Letters section - under the top menu called "About IHO".
IHO Council
During the inter-Assembly period the Council coordinates the activities of the Organization within the framework of the strategy, work programme and financial arrangements, prepares proposals concerning the overall strategy and the work programme, considers the financial statements and budget estimates, review proposals submitted to it by subsidiary organs, proposes the establishment of subsidiary organs, reviews draft agreements between the Organization and other organizations. The Council meets one a year and submits its reports, obervations, recommendations, and draft decisions to the Assembly and the IHO Member States for approval. The General Regulations applying to the Council and the Rules of Procedures are part of the IHO Publication M-1 and can be downloaded from the Publications section, Category "M" - Miscellaneous.
Become a Member State
How to join the IHO to become a member state?
IHO Strategic Plan and Work Programme
The IHO runs a 3-yearly budgetary cycle. Each budget cycle is based on forward forecast approved by the Member States at the previous Assembly. Each yearly forecast is reviewed in the preceding year and any changes approved by the Member States. The approved budget supports an annual work programme that is also approved by the Member States.
How to Get Involved
Welcome to the world of crowdsourced bathymetry (CSB), where collective efforts can help shape our understanding of the depths in our coastal zones, oceans, lakes, and waterways. This approach harnesses the power of individuals and organizations worldwide to contribute to and create improved bathymetric maps and products. Join our crowdsourced bathymetry effort and contribute to the exploration of the world's oceans like never before! We invite scientists and researchers, navigators, fishers, like-minded enthusiasts, and anyone with a passion for the mysteries that lie beneath the waves. Together, we can help create a comprehensive and accurate map of the ocean floor, unlocking valuable insights into marine ecosystems, geological processes, and potential resources. By pooling our collective knowledge and data, we can accelerate scientific discovery and conservation efforts. Whether you have access to specialized equipment or are simply an avid sailor, your contributions can make a difference.
Why CSB?
Participating in the CSB Initiative benefits both those collecting the data and the communities of data users. These data contribute to increasing our knowledge, information which supports local regional and global initiatives in favour of the sustainable use of the oceans. They can also contribute to improved knowledge of seabed topography and better bathymetric maps or hydrographic charts in previously uncharted areas or areas lacking accurate data. This in turn can help avoid groundings and make navigation safer for all.
The importance of mapping the ocean is highlighted at the 32nd Session of the IOC UNESCO Assembly
As part of its mission to “participate actively in international initiatives related to the knowledge of the sustainable use of the ocean,” the IHO participated in the 32nd Session of the IOC UNESCO Assembly held in Paris, France from 21-30 June 2023. In addition to engaging in plenary discussions in its role as an Observer, the IHO joined IOC UNESCO in celebrating the 120th anniversary of their joint project, the General Bathymetric Chart of the Oceans (GEBCO).