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AIS Vessel Tracks 2021

Metadata Updated: March 15, 2024

A vessel track shows the location and characteristics of commercial and recreational boats as a sequence of positions transmitted by an Automatic Identification System (AIS). AIS signals are susceptible to interference and this can result in a gap within a vessel track. The distribution, type, and frequency of vessel tracks are a useful aid to understanding the risk of conflicting uses within a certain geographic area. The vessel track positions in this data set are collected and recorded from land-based antennas as part of a national network operated by the U.S. Coast Guard.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Date February 29, 2024
Metadata Created Date May 5, 2022
Metadata Updated Date March 15, 2024
Reference Date(s) April 29, 2022 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from NOS OCM

Additional Metadata

Resource Type Dataset
Metadata Date February 29, 2024
Metadata Created Date May 5, 2022
Metadata Updated Date March 15, 2024
Reference Date(s) April 29, 2022 (publication)
Responsible Party NOAA Office for Coastal Management (Point of Contact)
Contact Email
Guid gov.noaa.nmfs.inport:67049
Access Constraints Cite As: Office for Coastal Management, [Date of Access]: AIS Vessel Tracks 2021 [Data Date Range],, Use Constraints: For coastal and ocean planning, Distribution Liability:
Bbox East Long -60
Bbox North Lat 50
Bbox South Lat 15
Bbox West Long -168
Coupled Resource
Frequency Of Update notPlanned
Harvest Object Id 8aba17f5-e98f-4d98-b72c-1749cffb1fe7
Harvest Source Id c0121fd9-df15-4168-ac04-42f6e36a794d
Harvest Source Title NOS OCM
Licence 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.
Metadata Language eng
Metadata Type geospatial
Old Spatial {"type": "Polygon", "coordinates": [[[-168.0, 15.0], [-60.0, 15.0], [-60.0, 50.0], [-168.0, 50.0], [-168.0, 15.0]]]}
Progress completed
Spatial Data Service Type
Spatial Reference System EPSG::4269
Spatial Harvester True
Temporal Extent Begin 2021-01-01
Temporal Extent End 2021-12-31

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