Vessel of Concern Process


A vessel that broadcasts “Not Under Command” via AIS, reduces speed for a prolonged period of time or operates unusually based on speed or location.


  • Real time monitoring
  • Live managed process in conjunction with Geofencing
  • Established and proven process


There are various ways in which vessels are identified as a vessel of concern by the Monitoring Center. One includes various “geo-fences” designed for each area within the Western Alaska and Prince William Sound Captain of the Port zones with region-specific filters and alarms sensitivities to give near real-time awareness on the status of hundreds of vessels. Detecting a vessel of concern can be due to a vessel broadcasting “Not Under Command” via the navigation status produced by AIS, vessels dropping to a slow speed for a prolonged period of time and vessels that appear to be operating unusually based on speed/location.


When a vessel of concern is detected, the Monitoring Center makes an initial query notification to the vessel. Once information on the status and intentions is received back from the vessel, the Monitoring Center will then confirm the status with the vessel. In cases where propulsion deficiencies occur these organizations receive a ‘heads up’ email notification.

  • U.S. Coast Guard
  • Owner/Operator (O/O)
  • Vessel’s Qualified Individual (QI)
  • Oil Spill Removal Organization (OSRO)
  • Salvage Marine Firefighting (SMFF)

Once a vessel’s issues have been resolved, the vessel notifies the Network and U.S. Coast Guard that it has resumed normal operations. The Monitoring Center will close out the event with an email to all parties notified.

Lloyd's List Winner North America 2016

Lloyd's List Winner North America 2016

The Network is an innovative winner in the 2016 Lloyd’s List Maritime Services Award for its work monitoring and providing enhanced oil spill response capability for seagoing vessels in Western Alaskan waters.

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