General Bathymetric Chart of the Oceans (GEBCO)

GEBCO’s gridded bathymetric data sets

Please read the following terms for the use of the data.

Terms of use

Data within the GEBCO_08 Grid and GEBCO One Minute Grid are subject to copyright and database right restrictions.

Reproduction of the gridded bathymetry data sets in derivative form for scientific research, environmental conservation, education or other non-commercial purposes is authorised without prior permission, providing the source material is properly credited.

The production of these gridded data sets is the result of an international collaboration of numerous scientists and hydrographers who have devoted much of their time and effort, often on a voluntary basis. This work was stimulated by a wish to create an authoritative, high-quality bathymetry of the world's oceans for the benefit of all.

Therefore, we ask that you contact us first, should you wish to pass on the data to third parties or use the data for commercial purposes.

In the first instance, please contact the British Oceanographic Data Centre (BODC) and include a clear statement of the purpose for which the material will be used and the manner in which it will be reproduced.

In the case of commercial activities, a contribution may be requested for the further improvement of GEBCO's data sets.


Any material reproduced from GEBCO gridded data sets should be accompanied by appropriate attribution to the source material. The version number of the grid is given in the header information within the grid data file.

For the GEBCO bathymetry data, this should be of the form (including the appropriate version number):

Reference for the GEBCO_08 Grid: ‘The GEBCO_08 Grid, version 20100927,’

Reference for the GEBCO One Minute Grid: ‘The GEBCO One Minute Grid, version 2.0,’

For non-GEBCO material, such as the land data from the SRTM30 data set, the acknowledgement should include reference to the original source material.



Data used in the creation of the GEBCO_08 Grid and GEBCO One Minute Grid have been obtained from sources believed to be reliable but their accuracy and completeness cannot be guaranteed. Whilst every effort has been made to ensure their reliability within the limits of present knowledge, no responsibility can be accepted by those involved in their compilation or publication for any consequential loss or damage arising from their use.

The GEBCO_08 Grid and GEBCO One Minute Grid are essentially deep ocean products and do not include detailed bathymetry for shallow shelf waters. Even to the present day, most areas of the world’s oceans have not been fully surveyed and, for the most part, bathymetric mapping is an interpretation based on random tracklines of data from many different sources. The quality and coverage of data from these sources is highly variable. Although the GEBCO_08 Grid and GEBCO One Minute Grid are presented at 30 arc-second and one arc-minute intervals of latitude and longitude respectively, this does not imply that knowledge is available on sea floor depth at this resolution - the depth in most 30 arc-second squares of the world’s oceans has yet to be measured.

Related external links

Official GEBCO web site  
International Hydrographic Organization (IHO) Intergovernmental Oceanographic Commission (IOC)


General Bathymetric Chart of the Oceans (GEBCO)       International Hydrographic Organization (IHO)       Intergovernmental Oceanographic Commission (IOC)