Prepared and published by the Defense Mapping Agency Hydrographic/Topographic Center. Depths shown by isolines and soundings. "From British Admiralty charts to 1992." "Soundings in meters." Includes source diagram and tidal information. Inset: Georgetown. Scale 1:15,000. Map no.24388. 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.