Prepared and published by the National Imagery and Mapping Agency. Depths shown by isolines and soundings. Relief shown by hachures and spot heights. "From Chilean charts to 1978, with additions and corrections to 1981; shoreline and topography compiled from best available source in 1983." "Lithographed by NIMA 10-97." "Copyright 1997 by the United States Government. No copyright claimed under Title 17 U.S.C." "Soundings in meters." Includes source diagram and index to next larger scale charts (magnetic variation curves for 1995). Map no.22032 This map is part of a collection of scanned and georeferenced nautical charts produced by the National Geospatial-Intelligence Agency (NGA). This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.