Prepared and published by the National Imagery and Mapping Agency. Depths shown by isolines and soundings. Relief shown by hachures. "From an Argentine chart of 1984." "Copyright 1997 by the United States Government. No copyright claimed under Title 17 U.S.C." "Soundings in meters." Map no.23145 This map is part of a collection of scanned and georeferenced nautical charts produced by the National Geospatial-Intelligence Agency (NGA).