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ICCM is the Inter-Commission Committee on Marine Geodesy. This IAG component was approved and created after IUGG general assembly in Montreal in 2019 (following on a proposal from the Chinese National Committee). It is the first attempt to foster worldwide communication and exchanges on marine and submarine geodesy. Marine Geodesy community encompasses a wide range of topics at very different maturity stages (e.g. tides versus real time seafloor deformation monitoring) and a large part of this community is not yet structured at the international level, which is part of the challenge of the ICCM.

The main objectives of the ICCM are:

• to shorten the gaps between theory and applications in marine geodesy, and to encourage transdisciplinary integration of the contemporary geodetic sensors, including marine geophysical sensors, oceanic sonar and physical oceanography instrumentation;
• to improve the global realization of the International Terrestrial Reference Frame (ITRF) by connecting the seafloor geodetic network component with the ITRF, and to improve current marine geodetic models by including the space, surface and subsurface geodetic observations;
• to encourage development of marine geodetic methodology, especially for the fusion methods of multi-marine geodetic observations;
• to promote international collaborations in regional marine geodetic surveys, and to develop and establish international conventions for marine geodetic data processing, the seafloor reference frame, and other standards.