AIS Vessel Transit Counts 2018

Automatic Identification Systems (AIS) 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. In the U.S. the Coast Guard and industry collect AIS data, which can also be used for a variety of coastal planning purposes. NOAA and BOEM have worked jointly to re-task and make available some of the most important records from the U.S. Coast Guard's national network of AIS receivers. This dataset represents annual vessel transit counts summarized at a 100 m by 100 m geographic area. A single transit is counted each time a vessel track passes through, starts, or stops within a 100 m grid cell.

To support ocean planning activities pursuant to the Executive Order Regarding the Ocean Policy to Advance the Economic, Security, and Environmental Interests of the United States, the Energy Policy Act, the Rivers and Harbors Act, and the Coastal Zone Management Act.

Bureau Code: 006:48, Program Code: 006:055

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For coastal and ocean planning

Microsoft Windows, ArcGIS Pro

Untested

Compiled to meet 10 meters horizontal accuracy at 95% confidence level

a) The geographic extent of these data include the conterminous United States, Hawaii, U.S. Virgin Islands and Puerto Rico.

b) Presence, absence, and contiguity of a track is dependent on the distance and temporal filters applied in the track building algorithm. Parameters for these data were one nautical mile and 30 minutes.

c) This is an aggregate data product derived from input files that were segmented generally by ocean basin. A gap can be seen along the seam line of the input files. The gap distance should never exceed the distance a vessel has traveled between two consecutive position records.

These data are logically consistent