Prepared and published by the National Imagery and Mapping Agency. Depths shown by isolines and soundings. Relief shown by spot heights. "From various sources to 1998." Not distributed to depository libraries. "Soundings in meters." "Copyright 1998 by the United States government. No copyright claimed under Title 17 U.S.C." Includes source diagram. Map No.28310 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.