GEBCO - The General Bathymetric Chart of the Oceans

Gridded Bathymetry Data

GEBCO’s gridded bathymetric data sets are global terrain models for ocean and land, and includes the GEBCO 2014 Grid, a global 30 arc-second interval grid. 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

GEBCO Symposium 2019 - Call for expressions of interest

This year's GEBCO Symposium will be held on 6th November in New Hampshire, USA. Find out more and how to get involved.

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 15th year

Since 2004, the Nippon Foundation/GEBCO Training Program has trained 90 students from 39 countries in seafloor mapping through a one-year postgraduate course held at the University of New Hampshire, USA.

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Latest News

GEBCO Symposium 2019 - Call for expressions of interest

The GEBCO Symposium is a one day event that brings together international experts to discuss innovative technologies and approaches that are pushing the boundaries of ocean floor mapping. This year, the GEBCO Symposium will be held on 6th November in Portsmouth, New Hampshire, USA.

Logos of the Oceanographic Museum of Monaco, the IHO and Piri Reis University, Instanbul, Turkey

International Symposium to be held in Monaco, June 2019

The symposium on a historical approach for measuring and protecting of World Oceans and Waters will be held in June 2019 as one of the events of the IHO centenary celebrations. Due date for abstract submissions is 22 February 2019.

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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