General Bathymetric Chart of the Oceans (GEBCO)

GEBCO world map

GEBCO world map 2014
GEBCO world map 2014 ©

The GEBCO world map shows the bathymetry of the world's ocean floor in the form of a shaded relief colour map. This is the third release of the map and now includes the names of features on the seafloor.

Access a copy of the world map

Please note that because of the size of the files we recommend that they are saved to disk rather than opened from the above links.

The GEBCO world map image (between 72°N and 72°S) is included in Google's Maps Gallery.

Data set acknowledgement

If imagery is reproduced from the GEBCO world map then we suggest the following form of acknowledgement

"Image reproduced from the GEBCO world map 2014,"

Creation of the map

Work on the creation of the GEBCO world map began as a laboratory workshop project of the Nippon Foundation/GEBCO Training Project at the Center for Coastal and Ocean Mapping of the University of New Hampshire, USA.

The map is based upon bathymetry data from the GEBCO_08 Grid, version 20100927, a global bathymetric grid with 30 arc-second spacing. The grid is largely based upon a database of shiptrack soundings with interpolation between soundings guided by satellite-derived gravity data. Where they improve on the existing grid, data sets developed by other methods have been included.

Names of features on the seafloor are taken from the GEBCO Gazetteer of Undersea Feature Names.

The land imagery is taken from the US National Aeronautics and Space Administration's (NASA) Blue Marble data set. The coastline is taken from the World Vector Shoreline.

The first release of the GEBCO world map was published in 2007 and was based on bathymetry data from the GEBCO One Minute Grid.

Use of the GEBCO world map

The image file has been made available for you to download and either print or use in digital form.

The map is supplied under the following terms and conditions

Related GEBCO pages at BODC

GEBCO at BODC      GEBCO Grid display software
GEBCO Digital Atlas   IHO-IOC GEBCO Cook Book
Order the GEBCO Digital Atlas   Software Interface updates
Download data — GEBCO's gridded data sets   Data set errata
GEBCO Web Map Service (WMS)    


Related external links

Official GEBCO web site      Nippon Foundation/GEBCO Training Project
Intergovernmental Oceanographic Commission (IOC)      The Blue Marble — land imagery
International Hydrographic Organization (IHO)   World Vector Shoreline (WVS)