23 other warnings in force

Everything the classifier did not place elsewhere.

What the archive shows

The available other warnings archive contains 37,606 messages across 30 issue years, from 1997 to 2026. The year links below provide the source and sea-area breakdowns for each period.

The current list includes messages issued from 2023-03-01 to 2026-09-26. A warning can remain in force for an extended operation, so this list is not a list of new incidents.

nga_inforce accounts for 14 of 23 recorded messages (61%), the largest source in the current list group in this selection.

The NGA archive froze in 2024-05; live collection began 2026-08-17. Counts near that gap are incomplete. Separate messages may describe updates to the same activity.

  1. NAVAREA X 106/262026-09-26 22:22Z
    Special purpose vessel Layla is recovering cables along a route from 14-45.98S 159-08.93E to 20-40.48S 155-22.64E and requests a 2 nautical mile clearance.
  2. NAVAREA IV 927/262026-09-25 06:15Z
    Naval operations are scheduled in the Caribbean Sea off Colombia from 29 September 0700Z to 1800Z in a defined area, cancelled 29 September 1900Z.
    Caribbean Sea · Colombia
  3. NAVAREA III 143/262026-09-25 00:00Z
    Shooting exercises are scheduled in the Azov Sea and Black Sea from 30 September 2026 to 2 October 2026, daily 1000 to 1130 UTC; caution advised.
    Azov Sea and Black Sea
  4. NAVAREA IV 901/262026-09-18 14:12Z
    The Ilet du Gosier light at 16-11.90N 061-29.44W in Guadeloupe, Caribbean Sea, is operating at reduced intensity.
    Caribbean Sea · Guadeloupe
  5. AUSCOAST 297/262026-09-18 04:30Z
    Eight virtual AIS navigation marks are inoperative in an area bounded by 38-23S to 38-37S and 148-25E to 148-37E.
  6. NAVAREA II 329/262026-09-15 16:03Z
    Cable operation is underway until further notice by vessel Leon Thevenin near Pointe Noire in a bounded area, and vessels are requested to give a wide berth.
    Pointe Noire · Works
  7. NAVAREA II 297/262026-08-07 11:37Z
    Medium and high frequency radio and digital selective calling services across the entire Azores Archipelago are not operational, and coverage is not guaranteed.
    Acores · Radio Services
  8. NAVAREA 7 221/262026-07-29 00:00Z
    A special buoy with a yellow occulting light is spotted at 28-35.8S 013-54.7E off Oranjemund, South Atlantic; caution advised.
  9. HYDROPAC 2075/262026-07-19 14:32Z
    Fish farms are established in four areas near the Strait of Hormuz, Iran.
    Strait of Hormuz · Iran
  10. NAVAREA XII 486/262026-07-16 22:13Z
    U.S. Coast Guard remote communication facility in Honolulu has unreliable transmissions; broadcasts moved to Guam, DSC responses to Point Reyes.
    North Pacific · Hawaii
  11. HYDROPAC 1903/262026-07-02 15:32Z
    Anchoring prohibited in a bounded area in the Persian Gulf off the United Arab Emirates between latitudes 25-24N and 25-28N, longitudes 055-05E and 055-10E.
    Persian Gulf · U.A.E
  12. NAVAREA III 100/262026-06-27 00:00Z
    Towed target shooting exercise in western Mediterranean Sea on October 29 or 30, 2026, within a defined area; canceled by October 31.
    Western Mediterranean Sea
  13. AUSCOAST 208/262026-05-30 01:04Z
    The vessel Dependable is conducting cable lay operations from 38-25S 144-28E to 40-22S 137-28E, with 1.5 nautical mile clearance requested.
  14. NAVAREA III 36/262026-03-04 00:00Z
    NATO operation Sea Guardian is underway in the Mediterranean Sea, requesting merchant vessels to report suspicious activity.
    Mediterranean Sea
  15. NAVAREA IV 1292/252025-11-21 22:31Z
    Twenty-two ocean bottom moorings are deployed one meter above the ocean floor until further notice in Davis Strait.
    Davis Strait
  16. HYDROARC 103/252025-07-17 17:51Z
    Cancelled electronic navigational charts may cause unintended behavior in some ECDIS systems, including reinstallation of recently cancelled charts.
    Cancelled Electronic Navigational Chart (enc) Advisory
  17. HYDROPAC 1823/252025-07-17 17:51Z
    The National Geospatial-Intelligence Agency warns that cancelled electronic navigational charts may cause unintended ECDIS behavior on some systems, including Navy VMS 9.5 and Raytheon Anschutz Synapsis NX.
    Cancelled Electronic Navigational Chart (enc) Advisory
  18. HYDROLANT 1204/252025-07-17 17:51Z
    The National Geospatial-Intelligence Agency advises that cancelled electronic navigational charts may cause unintended behavior on electronic chart display systems.
    Cancelled Electronic Navigational Chart (enc) Advisory
  19. NAVAREA IV 190/252025-02-14 18:14Z
    Canada has activated Ice Control Zone Tango in the Labrador Sea, requiring laden oil tankers and chemical carriers to comply with Transport Canada's TP 15163.
    Labrador Sea
  20. HYDROPAC 83/252025-01-13 13:17Z
    In Kuwait, Persian Gulf, the meteorological tower at 28-46.0N 048-26.1E is temporarily replaced by a yellow buoy flashing 4 times every 15 seconds, 5 meters.
    Persian Gulf · Kuwait
  21. HYDROLANT 682/242024-04-02 15:32Z
    Ukraine declares coastal approach instructions for entry and departure in Ukrainian ports daily from 0200Z to 1700Z until further notice.
    Black Sea · Ukraine
  22. HYDROPAC 363/242024-01-30 15:17Z
    At 21-06.00S 055-36.00E, MRCC La Réunion is unable to receive MF and HF transmissions; for assistance contact them at 2622 6243 4343 or reunion@mrccfr.eu.
    Reunion
  23. NAVAREA IV 222/232023-03-01 15:27Z
    Anchoring prohibited until further notice near Anguilla in an area bounded by 18-13.60N 063-04.15W, 18-13.60N 063-04.70W, 18-13.20N 063-04.70W, and 18-13.20N 063-04.50W; wide berth requested.
    Anguilla

Archive by year · 37,606 since 1997

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