Underwater operations 0500Z to 1600Z daily until 21 oct by M/V xin hong, vessel luma d, and vessel vitor I…
South Atlantic Ocean · HYDROLANT 3148/20
What this record establishes
Archived notice · 2020-10-21 17:00Z
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) · NAVAREA V COASTAL E 761/20 162155Z OCT 20.. Issued 2020-10-16 23:10Z. 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 parsed report position is -12.964, -38.568. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2020-10-16 23:10Z
- status
- Archived notice
- self-cancels
- 2020-10-21 17:00Z
- authority
- NAVAREA V COASTAL E 761/20 162155Z OCT 20.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V COASTAL E
- sea
- South Atlantic Ocean
- position
- -12.964, -38.568
- vessel
- M/V XIN HONG · 2 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-EAST COAST. DNC 01. 1. UNDERWATER OPERATIONS 0500Z TO 1600Z DAILY UNTIL 21 OCT BY M/V XIN HONG, VESSEL LUMA D, AND VESSEL VITOR I IN 12-57.87S 038-34.07W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 211700Z OCT 20.
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.
- 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.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
- 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.
Collected reports in this area · survey operations
25 within 180 nm since 2001 · 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.
- Underwater operations 311100Z mar to 022000Z apr by M/V bartira II and M/V mapele I in 13-26.53S 038-38.80W2022-03-31
- Survey operations 270500Z feb to 252100Z mar by M/V sable in area bound by 10-44.76S 036-33.13W, 10-44.53S…2020-02-27
- Survey operations in progress until 250259Z aug by M/V ridley thomas in area bound by 03-43.63S 038-15.43W,…2015-06-04
- Underwater operations in progress until 150359Z feb 15 in area bound by 11-15.51S 036-59.70W, 11-14.58S…2014-08-21
- Sesimic survey in progress until 05 sep by M/V hawk explorer towing 6.5 mile long cables in area bound by…2012-09-04
- Underwater operations in progress until 031500Z dec by M/V acergy harrier vicinity 13-29.37S 038-46.72W2010-11-27
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 2026-10-03 03:42Z; 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.