This point shapefile represents ports in the United States, Mexico, and Canada. Data includes official port name, entry restrictions, associated U.S. representative, depth information, and more. This layer is from Winter Quarter 2016. This layer is intended to assist users in locating and analyzing port data in North America and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data. Hart Energy Publishing.(2016). Ports, North America, Winter 2016. Hart Energy Publishing. Available at: http://purl.stanford.edu/dk568mr8336 This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.