What is navigational status?

Ships broadcast their navigational status within position message types 1, 2, 3 and 27. It can take on a value from 0 to 15, and each number represents a unique piece of metadata associated with the vessel's activity. We provide this value within the status  field.

What does each number mean?

  • 0 : Under way using its engine¬†
  • 1 : Anchored
  • 2 : Not under command
  • 3 : Has restricted maneuverability
  • 4 : Ship draught is limiting its movement
  • 5 : Moored (tied to another object to limit free movement)
  • 6 : Aground
  • 7 : Engaged in fishing
  • 8 : Under way sailing
  • 9 : (Number reserved for modifying reported status of ships carrying dangerous goods/harmful substances/marine pollutants)
  • 10 : (Number reserved for modifying reported status of ships carrying dangerous goods/harmful substances/marine pollutants)
  • 11 : Power-driven vessel towing astern
  • 12 : Power-driven vessel pushing ahead/towing alongside
  • 13 : (Reserved for future use)
  • 14 : Any of the following are active: AIS-SART (Search and Rescue Transmitter), AIS-MOB (Man Overboard), AIS-EPIRB (Emergency Position Indicating Radio Beacon)
  • 15 : Undefined (default)

References & Other Resources

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