This polygon shapefile represents the geographic location and identity of designated areas used to manage vessel traffic in the northeast United States coastal and offshore environment. To support coastal and ocean planning and other activities pursuant to the Coastal Zone Management Act, Energy Policy Act, Magnuson-Stevens Fishery Conservation and Management Act, National Environmental Policy Act, Rivers and Harbors Act and the Submerged Lands Act. I.M. Systems Group. (2016). Marine Transportation, Northeast United States, 2012. U.S. National Oceanic and Atmospheric Administration. Available at: http://purl.stanford.edu/nv357wn3172. Not to be used for navigation This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.