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Contributing Data

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Contributing data

GEBCO is continually working to improve its data sets with the aim of providing the most authoritative publicly-available global bathymetric grids of the world's oceans and helping us achieve the goal of the Seabed 2030 Project – 100% of the ocean floor mapped by 2030.

We are grateful for contributions of single-beam and/or multibeam survey data, individual soundings or existing grids to help update our gridded data sets and products.

Coverage of ship tracklines (black) overlain on the GEBCO_2019 Grid in part of the Pacific Ocean. These are the lines along which depth measurements have been taken. Between the tracklines, the GEBCO_2019 Grid is based on interpolation, largely guided by satellite-derived gravity data. This highlights the need for GEBCO to continually update its bathymetric grid with new contributions of data to help fill the data gaps.

How to contribute

Contributing data for public access

GEBCO encourages the sharing of source bathymetric data within the international community for the benefit of all.

If you would like to make your data publicly available, contact the International Hydrographic Organization Data Center for Digital Bathymetry (IHO DCDB), hosted at the US NOAA National Centers For Environmental Information (NCEI) to find out how to submit data.

The IHO DCDB manages a worldwide publicly-accessible digital data bank of oceanic soundings on behalf of the Member Countries of the IHO.

Contributing data for updating the GEBCO grid only

If you are unable to make your source data publicly available, you can contribute the data directly to GEBCO through the Seabed 2030 Project.


To help with the inclusion of contributed data into the global GEBCO grid, we would ideally like processed data in the form of multibeam grids, single beam tracks or pre-generated grids - i.e. a data set in gridded form based on a number of source data sets.

If you would like to submit a pre-generated grid, it would be helpful if you could provide an accompanying information on the types of source data included in the grid and if areas are based on interpolation (e.g. as a Type Identifier Grid). This will help us work to 'map the gaps'.

Join the Crowdsourced bathymetry (CSB) data initiative

In order to map the whole of the global seafloor, we cannot rely on traditional survey vessels alone. An initiative has been setup to support and enable mariners and professionally manned vessels to collect CSB. This approach leverages underway x, y, z, t data already being collected on vessels with common commercial echo sounders and Global Navigation Satellite System receivers.

Find out how to get involved.

Our data contributors

GEBCO thanks all the data collectors and regional grid developers who make their data sets available. Find out about the data sets included in the GEBCO global grid.