Netherlands
South Atlantic Ocean · HYDROLANT 1209/22
What this record establishes
Archived notice · 2022-05-04 15:49Z
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) · WZ 526/22 040120Z MAY 22.. Issued 2022-05-04 14:20Z. 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
- South Atlantic Ocean. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
Related notices and cancellation links
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2022-05-04 14:20Z
- status
- Archived notice
- self-cancels
- 2022-05-17 00:59Z
- authority
- WZ 526/22 040120Z MAY 22.
- issued by
- WZ
- sea
- South Atlantic Ocean
- position
- -51.343, 2.144
- vessel
- S/V ARTABRO · 6 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NORTH SEA.
BELGIUM.
ENGLAND.
FRANCE.
NETHERLANDS.
DNC 20.
1. UNDERWATER OPERATIONS IN PROGRESS
UNTIL 162359Z MAY BY S/V ARTABRO IN VICINITY
OF TRACKLINE JOINING
51-25.2S 002-07.2E, 51-29.2S 001-43.7E,
51-22.7S 001-26.7E, 51-13.9S 002-53.6E,
51-22.4S 002-32.2E.
2. CANCEL THIS MSG 170059Z MAY 22.
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.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- 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.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · survey operations
1 within 180 nm since 2022 · 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.
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
No other collected notice is currently listed in force within this radius. This does not establish safe conditions.
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-01 23:40Z; 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.