Underwater operations in progress until further notice in area bound by 20-23.47S 148-54.83E, 20-23.48S…
Coral Sea · HYDROPAC 2630/23
What this record establishes
Archived notice · 2024-01-25 01:24Z
This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.
- Source and dates
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · AUSCOAST 192/23 150810Z AUG 23.. Issued 2023-08-15 08:57Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- Coral Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
- issued
- 2023-08-15 08:57Z
- status
- Archived notice
- authority
- AUSCOAST 192/23 150810Z AUG 23.
- issued by
- AUSCOAST
- sea
- Coral Sea
- position
- -20.416, 148.941
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
CORAL SEA. AUSTRALIA. DNC 05. UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE IN AREA BOUND BY 20-23.47S 148-54.83E, 20-23.48S 148-58.08E, 20-26.48S 148-58.09E, 20-26.52S 148-54.88E. WIDE BERTH REQUESTED.
Reading this warning
- DNC (Digital Nautical Chart)
- A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- Position (degrees and minutes)
- How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
Collected reports in this area · survey operations
4 within 180 nm since 2017 · 0 in the last 12 months · 0 listed in force now
Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.
- Survey operations in progress until further notice by M/V sea ranger in area bound by 19-44.70S 149-30.90E,…2022-08-18
- Underwater operations in progress until further notice with submersible along trackline between 19-09.1S…2017-09-18
- Underwater operations in progress until further notice in 22-35.6S 151-06.4E2017-08-22
Month of issue in the collected archive
All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.
Nearby notices listed in force · within 120 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-01 14:40Z; source collection times vary.
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.