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How to access IHO DCDB World Bathymetry Database?

Deep ocean bathymetric data are freely available for download from the IHO-DCDB web site.  It is possible to search, view or download data using the following DCDB interfaces;
Some shallow water data have been provided exclusively for GEBCO mapping purposes.  Although these data are not freely available, they are incorporated into the GEBCO digital grid, which if freely available from the GEBCO web site.  Metadata concerning shallow water bathymetry provided IHO Member States is available HERE