The General Bathymetric Chart of the Oceans (GEBCO) is a publicly available, global terrain model providing continuous seafloor topography and ocean depth measurements at high spatial resolution. Maintained through collaboration between the International Hydrographic Organization (IHO) and the Intergovernmental Oceanographic Commission (IOC), GEBCO delivers comprehensive geospatial data essential for understanding underwater geography.

Within GIS environments, GEBCO datasets are integrated as raster elevation grids, enabling spatial analysis workflows such as slope calculation, contour generation, watershed delineation, and three-dimensional visualization of ocean basins. Geospatial analysts leverage these layers alongside satellite-derived bathymetric data, sonar measurements, and oceanographic datasets to perform multi-source data fusion and produce authoritative nautical mapping products.

The practical benefits span multiple disciplines. Marine biologists use GEBCO for habitat modeling, while offshore engineers rely on it for pipeline routing and infrastructure planning. Climate researchers apply the data to ocean circulation modeling, and disaster management professionals utilize it for tsunami propagation simulations. By standardizing global seafloor mapping within interoperable GIS platforms, GEBCO accelerates scientific discovery, supports maritime navigation safety, and enables evidence-based decision-making across coastal and deep-ocean environments.