Description: This map presents a digital version of the Operational Navigation Charts (ONC) at 1:1,000,000-scale, produced by the US National Geospatial-Intelligence Agency (NGA). The map includes over 200 charts across the world, excluding parts of North America, Europe, Asia, and Oceania where charts are not publicly available. For more information on this map, including our terms of use, visit us online at http://goto.arcgisonline.com/maps/World_Navigation_Charts