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The GEBCO Digital Atlas (GDA) was a collection of GEBCO's bathymetric contour and gridded bathymetric data sets made available on CD-ROM/DVD along with gridding viewing and data access software. The GDA was first published in 1994, with the last version published in 2015. The GDA is now discontinued.
GEBCO's gridded bathymetric data sets are now available for direct download.