gov.noaa.nmfs.inport:79556 eng UTF8 dataset Cloud Optimized GeoTIFF Office for Coastal Management resourceProvider 2026-05-21T13:11:24 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) EPSG::4269 AIS Vessel Transit Counts 2025 2026-05-18 publication NOAA/NMFS/EDM 79556 https://www.fisheries.noaa.gov/inport/item/79556 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information mapDigital This dataset summarizes annual vessel transit counts. Transit counts show how many times vessels pass through a specific 100-meter by 100-meter geographic area. The automatic identification system (AIS) is 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 add value and make available some of the most important historical records from the U.S. Coast Guard's national network of AIS receivers. This data set represents annual vessel transit counts summarized at a 100-meter by 100-meter geographic area. A single transit is counted each time a vessel track passes through, starts, or stops within a 100-meter 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. U.S. Coast Guard Navigation Center, NOAA Office for Coastal Management completed NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact notPlanned coastal energy planning theme Exclusive Economic Zone Outer Continental Shelf Territorial Sea United States of America place DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Automatic Identification System (AIS) project InPort otherRestrictions Cite As: Office for Coastal Management, [Date of Access]: AIS Vessel Transit Counts 2025 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/79556. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Use Constraints: For coastal and ocean planning otherRestrictions Distribution Liability: https://hub.marinecadastre.gov/pages/disclaimer unclassified grid eng; US oceans transportation Microsoft Windows, ArcGIS Pro, Azure SQL -168 -60 15 50 | Currentness: Publication Date 2025-01-01 2025-12-31 Bureau Code: 006:48, Program Code: 006:055 https://ocmgeodatastor1.blob.core.windows.net/marinecadastre/ais/aistransit/index-aistransit.html WWW:LINK-1.0-http--link https://ocmgeodatastor1.blob.core.windows.net/marinecadastre/ais/aistransit/index-aistransit.html download https://marinecadastre.gov/data WWW:LINK-1.0-http--link https://marinecadastre.gov/data Marine Cadastre Data Registry download dataset Accuracy Untested Horizontal Positional Accuracy Compiled to meet 10 meters horizontal accuracy at 95% confidence level Completeness Report a) The geographic extent of these data include the conterminous United States, Hawaii, U.S. Virgin Islands, Puerto Rico, Guam, and CNMI. 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 1,852 meters (i.e. 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. Conceptual Consistency These data are logically consistent 1. Select tracks for all vessels from the 2025 AIS Vessel Tracks geodatabase to generate monthly "all vessel" transit count grids. Expand coverage to include Guam and CNMI. 2. Calculate transit count grids following an identical or comparable algorithm implemented in the Marine Cadastre AIS Vessel Transit Counter tool, for each month of tracks and for each ocean basin. 3. Merge monthly transit count grids into an annual transit count grid per ocean basin. 4. Confirm all raster files have statistics, consistent compression, and pyramids according to specifications. 5. Format all transit count rasters as cloud-optimized GeoTIFFs. 2026-04-01T00:00:00 Data for the Atlantic were corrected to account for minor undercounting of vessel counts where data were mosaicked during processing. Therefore, data accessed or downloaded between initial release of these 2025 vessel count data (April 14, 2026) and this correction (May 18, 2026) should be considered outdated. We recommend downloading the updated dataset to ensure accuracy. 2026-05-18T00:00:00 Source Contribution: Annual vessel tracks built using Reconstruct Tracks or equivalent tool, with split parameters of 1,852 meters and 30 minutes. Vessel type definitions derived from the original NMEA record and the Authoritative Vessel Identification Service (AVIS) Vessel Catalog AIS Vessel Tracks 2025 2026-04-01 publication NOAA Office for Coastal Management https://marinecadastre.gov/data/ WWW:LINK-1.0-http--link Source Online Linkage URL where the source data were originally accessed. information originator