GEBCO - The General Bathymetric Chart of the Oceans

GEBCO aims to provide the most authoritative, publicly available bathymetry data sets for the world’s oceans.

Gridded Bathymetry Data

GEBCO’s gridded bathymetric data sets are global terrain models for ocean and land. The grids are available to download or access through Web Map Services.

Data & Products

Part of the GEBCO world map showing bathymetry from the GEBCO grid and names from the GEBCO Gazetteer of Undersea Feature Names

GEBCO produces and makes available a range of bathymetric data sets and products. This includes a global bathymetric grid; gazetteer of undersea feature names, a Web Map Service and printable maps of ocean bathymetry.

Seabed 2030

3D view of the GEBCO grid for the Mariana Trench region in the Northwest Pacific Ocean

Seabed 2030 is a collaborative project between the Nippon Foundation and 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.

GEBCO Spotlight

Training Progam (2023-2024)

Applications are now sought for the Nippon Foundation/GEBCO Training Program in 2023.

Latest Stats and information

How deep are the oceans?

The deepest depth measured so far in the oceans is around 10,920m in the Challenger Deep, part of the Mariana Trench, in the Northwest Pacific Ocean. For comparison, Mount Everest is around 8,850m high.
Over 1,300 seafloor 'mountains' named

The GEBCO Gazetteer of Undersea Feature Names includes names for over 1,300 seamounts, (elevations on the seafloor over 1,000m high).
Training program now in 18th year

Since 2004, the Nippon Foundation/GEBCO Training Program has trained students from around the world in seafloor mapping through a one-year postgraduate course held at the University of New Hampshire, USA.

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Latest News

Geographic coverage of the South and West Pacific regional mapping area.

Seabed 2030 South and West Pacific Regional Mapping Meeting

The next South and West Pacific Regional Mapping meeting will be held as a hybrid event from Lima, Peru, 12-14 July 2023. Find out how to register to attend and participate in this event.

Calling all Hydrographic and Oceanographic Authorities

Opportunity to contribute to key study. Closes 15th April 2023 (extended from 31st March 2023 by popular demand).

General Bathymetric Chart of the Oceans

GEBCO's aim is to provide the most authoritative publicly-available bathymetry of the world's oceans. It operates under the joint auspices of the International Hydrographic Organization (IHO) and the Intergovernmental Oceanographic Commission (IOC) (of UNESCO).

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