1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a point coverage representing island features found throughout DCW (Digital Chart of the World) geographic coverage as of 1992. T... National Imagery and Mapping Agency.
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1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a polyfon coverage representing political and ocean feature areas found throughout DCW (Digital Chart of the World) geographic co... National Imagery and Mapping Agency.
1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a polyline coverage representing political boundaries and ocean feature lines found throughout DCW (Digital Chart of the World) g... National Imagery and Mapping Agency.
1997. National Imagery and Mapping Agency. Water Depth Lines (Bathymetry) is a polyline theme representing hydrographic depth contour lines located throughout the World. This dataset is par... National Imagery and Mapping Agency.
1997. National Imagery and Mapping Agency. World Coastlines is a polyline theme representing shorelines throghout the world. This dataset is part of the Vector Map Level 0 database. The Vec... National Imagery and Mapping Agency.
1997. National Imagery and Mapping Agency. World Oceans and Seas is a polygon theme representing ocean and sea areas world wide. Features in this layer have an FACC (Feature and Attribute C... National Imagery and Mapping Agency.
2012. Research Data Services (RDS), Columbia University Libraries and United States. National Imagery and Mapping Agency. World Port Index, 2012 is a point theme representing port facilities worldwide. This dataset was derived from the 22nd Edition of the World Port In... National Imagery and Mapping Agency.
2014. Research Data Services (RDS), Columbia University Libraries and United States. National Imagery and Mapping Agency. World Port Index, 2014 is a point theme representing port facilities worldwide. This dataset was derived from the 23rd Edition of the World Port In... National Imagery and Mapping Agency.