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1. World Port Index, 2014

2014. Digital Social Science Center (DSSC), 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.

2. United States Major Ports, 2013

2013. United States. Bureau of Transportation Statistics. The ports are politically defined by port limits or Corps projects, excluding non-Corps projects not authorized for publication. The determination ... Research and Innovative Technology Administration/Bureau of Transportation Statistics.

3. World Port Index, 2012

2012. Digital Social Science Center (DSSC), 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.

4. United States Hydrographic Lines, 2013

2011. United States. Bureau of Transportation Statistics and United States. Bureau of the Census. The hydro polygon/arc coverages were created using TIGER/LINE 2000 shapefile data gathered from ESRI's Geography Network. The individual county hyd...

5. United States National Waterway Network (line), 2008

2008. Vanderbilt Engineering Center for Transportation Operations and Research Vanderbilt University and Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS). National Waterway Network is a line theme representing shipping lanes that serve as representative paths in open waterways. The data set covers the... U.S. Army Corps of Engineers Navigation Data Center.

6. United States National Waterway Network (node), 2008

2008. Vanderbilt Engineering Center for Transportation Operations and Research Vanderbilt University and Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS). United States National Waterway Network (node), 2008 is a point theme representing physical entities such as river confluences, ports/facilities, a... U.S. Army Corps of Engineers Navigation Data Center.

7. World Gazetteer, 2008

2008. ESRI. World Gazetteer is a point theme representing the locations and proper names for map features around the world. The gazetteer includes attribute an... ESRI.

8. Afganistan World Gazetteer Locations, 2006

2006. ESRI. Afganistan World Gazetteer Locations is a point theme representing the locations and proper names for map features in Afganistan. The gazetteer inc... ESRI.

9. Albania World Gazetteer Locations, 2006

2006. ESRI. Albania World Gazetteer Locations is a point theme representing the locations and proper names for map features in Albania. The gazetteer includes ... ESRI.

10. Algeria World Gazetteer Locations, 2006

2006. ESRI. Algeria World Gazetteer Locations is a point theme representing the locations and proper names for map features in Algeria. The gazetteer includes ... ESRI.