{
  "url": "https://openlegislation.uk/eu-regulation-2019-838/annex/division-3/division-3.3/division-3.3.3",
  "json_url": "https://openlegislation.uk/eu-regulation-2019-838/annex/division-3/division-3.3/division-3.3.3.json",
  "legislation": "eur/2019/838",
  "legislation_title": "Commission Implementing Regulation (EU) 2019/838 of 20 February 2019 on technical specifications for vessel tracking and tracing systems and repealing Regulation (EC) No 415/2007",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2019-838",
  "path": "annex/division/3/division/3.3/division/3.3.3",
  "kind": "division",
  "number": "3.3.3",
  "heading": "Reporting interval of information transmission",
  "text": "The different information types of Inland AIS messages shall be transmitted with different reporting rates.\nThe reporting rate for dynamic information can be switched between autonomous mode and assigned mode for moving vessels in inland waterway areas. The reporting rate can be increased up to 2 seconds in assigned mode. The reporting behaviour shall be switchable from an AIS base station (via AIS Message 23 for group assignment or Message 16 for individual assignment) and by commands from external ship-borne systems, via IEC 61162 interface as defined in Appendix B.\nFor static and voyage related the reporting rate shall be 6 minutes, on request, or if information is amended.\nFollowing reporting rates shall be applicable:\nStatic vessel information:\nEvery 6 minutes, on request or when data has been changed\nDynamic vessel information:\nDepends on navigational status and vessel operating mode, either autonomous (default) or assigned mode, see Table 3.1\nVoyage related vessel information:\nEvery 6 minutes, on request or when data has been changed\nNumber of persons on board:\nAs required or on request\nSafety related messages:\nAs required\nApplication Specific Messages:\nAs required (to be defined by competent authority)\nTable 3.1\nUpdate rate of dynamic vessel information\nWhen a mobile station determines that it is the semaphore (refer to Recommendation ITU-R M.1371, Annex 2, § 3.1.1.4), the reporting rate shall increase to once per two seconds (refer to Recommendation ITU-R M.1371, Annex 2, § 3.1.3.3.2).\nShall be switched by competent authority, when necessary.\nVessel dynamic conditions\nNominal reporting interval\nVessel status ‘at anchor’ and not moving faster than 3 knots\n3 minutes\nVessel status ‘at anchor’ and moving faster than 3 knots\n10 seconds\nVessel operating in autonomous mode, moving 0 to 14 knots\n10 seconds\nVessel operating in autonomous mode, moving 0 to 14 knots and changing course\n3 1/3 seconds\nVessel operating in autonomous mode, moving 14 to 23 knots\n6 seconds\nVessel operating in autonomous mode, moving 14 to 23 knots and changing course\n2 seconds\nVessel operating in autonomous mode, moving faster than 23 knots\n2 seconds\nVessel operating in autonomous mode, moving faster than 23 knots and changing course\n2 seconds\nVessel operating in assigned mode\nassigned between 2 seconds and 10 seconds",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "When a mobile station determines that it is the semaphore (refer to Recommendation ITU-R M.1371, Annex 2, § 3.1.1.4), the reporting rate shall increase to once per two seconds (refer to Recommendation ITU-R M.1371, Annex 2, § 3.1.3.3.2)."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "Shall be switched by competent authority, when necessary."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2019/838/annex/division/3/division/3.3/division/3.3.3",
    "retrieved_at": "2026-11-01T14:43:22.038059+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}