Prepared and published by the Defense Mapping Agency. Depths shown by isolines and soundings. Relief shown by form lines and spot heights. "From a Brazilian chart of 1981." "Copyright 1996 by the United States Government. No copyright claimed under Title 17 U.S.C." "Soundings in meters." Map no.24020. This map is part of a collection of scanned and georeferenced nautical charts produced by the National Geospatial-Intelligence Agency (NGA). United States. Defense Mapping Agency. (1996). Brazil--north coast, Baía Oiapoque to Rio Parnaíba (Raster Image). LandInfo. Available at: https://purl.stanford.edu/hy199zv2357 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.