The General Bathymetric Chart of the Oceans (GEBCO) is a continuous terrain model of the global oceans and land. The GEBCO project has been producing bathymetric charts and datasets since 1903. Since 2019, GEBCO’s global bathymetric grids have been developed through the framework of The Nippon Foundation-GEBCO Seabed 2030 Project. This is a collaborative project between the Nippon Foundation of Japan and the General Bathymetric Chart of the Oceans (GEBCO). It aims to bring together all available bathymetric data to produce the definitive map of the world ocean floor by 2030 and make it available to all.

The GEBCO Product Collection encompasses all digital products released in all formats since 2008. The GEBCO Product Collection contains all available formats and datasets for the latest GEBCO release, alongside documentation and terms of use:

• GEBCO 2025 - 15 arc-seconds - global data set, on a geographic grid, at 15 arc-second intervals. The grid is accompanied by a Type Identifier Grid (TID), and a version that contains sub-ice topography information for Greenland and Antarctica. Available as a global NetCDF format file or as a set of 8 tiles (each with an area of 90° x 90°) in Data GeoTiff and Esri ASCII raster format.

The GEBCO Product Collection also contains all available datasets in all formats for legacy GEBCO releases, alongside their documentation and terms of use:

• GEBCO 2024 - 15 arc-seconds - global data set, on a geographic grid, at 15 arc-second intervals. The grid is accompanied by a Type Identifier Grid (TID), and a version that contains sub-ice topography information for Greenland and Antarctica. Available as a global NetCDF format file or as a set of 8 tiles (each with an area of 90° x 90°) in Data GeoTiff and Esri ASCII raster format.
• GEBCO One Minute Grid - 1 arc-minute - a global bathymetric grid. Originally published in 2003, last updated in 2008.
• GEBCO 2014 Grid - 30-arc seconds - a global bathymetric grid originally published in 2014, last updated in April 2015.
• GEBCO 2019 - global data set, on a geographic grid, at 15 arc-second intervals. The grid is accompanied by a Type Identifier Grid (TID). Available in NetCDF format only.
• GEBCO 2020 - 15 arc-seconds - global data set, on a geographic grid, at 15 arc-second intervals. The grid is accompanied by a Type Identifier Grid (TID). Available as a global NetCDF format file or as a set of 8 tiles (each with an area of 90° x 90°) in Data GeoTiff and Esri ASCII raster format.
• GEBCO 2021 - 15 arc-seconds - global data set, on a geographic grid, at 15 arc-second intervals. The grid is accompanied by a Type Identifier Grid (TID), and a version that contains sub-ice topography information for Greenland and Antarctica. Available as a global NetCDF format file or as a set of 8 tiles (each with an area of 90° x 90°) in Data GeoTiff and Esri ASCII raster format.
• GEBCO 2022 - 15 arc-seconds - global data set, on a geographic grid, at 15 arc-second intervals. The grid is accompanied by a Type Identifier Grid (TID), and a version that contains sub-ice topography information for Greenland and Antarctica. Available as a global NetCDF format file or as a set of 8 tiles (each with an area of 90° x 90°) in Data GeoTiff and Esri ASCII raster format.
• GEBCO 2023 - 15 arc-seconds - global data set, on a geographic grid, at 15 arc-second intervals. The grid is accompanied by a Type Identifier Grid (TID), and a version that contains sub-ice topography information for Greenland and Antarctica. Available as a global NetCDF format file or as a set of 8 tiles (each with an area of 90° x 90°) in Data GeoTiff and Esri ASCII raster format.