Prepared and published by the Defense Mapping Agency Hydrographic/Topographic Center. Depths shown by isolines and soundings. Relief shown by contours. "From Mexican and U.S. charts to 1991." "Copyright 1994 by the United States Government." "Soundings in meters." Includes source diagram. Map No.28323 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.