United States. National Oceanic and Atmospheric AdministrationThis raster dataset represents density of Tug and tow vessel traffic in 2012 from vessels with Automatic Identification System (AIS) transponders in 100 meter grid cells. The dataset is best interpreted using a high to low density scale and does not represent actual vessel counts. in the Northeastern United States. AISs are a navigation safety device that transmits and monitors the location and characteristics of many vessels in U.S. and international waters in real-time.To support efforts for regional coastal and ocean planning by the Northeast Regional Ocean Council (NROC).Not to be used for navigationThis layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.GeoTIFFhttps://purl.stanford.edu/qs831pz2063engUnited States. National Oceanic and Atmospheric AdministrationPublicShips--Automatic identification systemsHarbors--Traffic controlShippingTugboatsTowboatsOceansEnvironmentTransportationNorth Atlantic Tug and Tow AIS Vessel Density 2012DatasetsAtlantic OceanCape Cod Bay (Mass.)Chesapeake Bay (Md. and Va.)Delaware Bay (Del. and N.J.)Maine, Gulf ofMassachusetts Bay (Mass.)Long Island Sound (N.Y. and Conn.)2012Stanford