Prepared and published by the Defense Mapping Agency, Hydrographic/Topographic Center. "Loran C." "From various sources to 1970." "Soundings in meters." Map No. 38266. 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.