The General Bathymetric Chart of the Oceans (GEBCO) aims to provide the most authoritative, publicly-available bathymetry data sets for the world's oceans.Users must register in order to download dataset.You may download the product from the link above or use the DVD in the Map Library: DVD[333.5
Chart No. 1 contains the symbols, abbreviations, and terms used on navigation charts published by the Canadian Hydrographic Service and is based on the Chart Specifications of the International Hydrographic Organization (IHO).
In the same way GIS has helped make analysis and mapping of the earth's surface more accessible and powerful, GIS technology allows experts to see that large portion of the planet that is underwater.
The General Bathymetric Chart of the Oceans (GEBCO) aims to provide the most authoritative, publicly-available bathymetry data sets for the world's oceans.