Georeferenced nautical chart. Map No.: 25570 This map is part of a collection of scanned and georeferenced nautical charts produced by the National Geospatial-Intelligence Agency (NGA). United States. Defense Mapping Agency. (1998). Approach to Antigua (Raster Image). LandInfo. Available at: https://purl.stanford.edu/db959fq2596 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.