Underwater operations in progress until 17 apr by M/V seabead constructor with submersible in area bound by…
South Atlantic Ocean · HYDROLANT 1109/19
What this record establishes
Archived notice · 2019-04-09 15:04Z
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 VI 145/19 090145Z APR 19.. Issued 2019-04-09 06:47Z. 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 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
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2019-04-09 06:47Z
- status
- Archived notice
- authority
- NAVAREA VI 145/19 090145Z APR 19.
- NAVAREA
- NAVAREA VI · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -52.611, -56.316
- vessel
- M/V SEABEAD CONSTRUCTOR · 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. FALKLAND ISLANDS. DNC 07. 1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 17 APR BY M/V SEABEAD CONSTRUCTOR WITH SUBMERSIBLE IN AREA BOUND BY 52-13.5S 056-02.8W, 52-40.0S 055-38.0W, 52-59.6S 056-35.3W, 52-33.6S 057-00.0W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 18 APR 19.
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.
- 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.
- 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
7 within 180 nm since 2014 · 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 in progress until 17 apr by M/V seabead constructor with submersible in area bound by…2019-04-09
- Survey operations in progress until further notice by M/V ara puerto deseado in area bound by 55-00.0S…2017-04-30
- Oceanographic operations in progress by M/V puerto deseado in 54-30.8S 058-50.7W2016-03-30
- Oceanographic operations in progress by M/V puerto deseado in 54-52.9S 058-25.8W2016-03-30
- Oceanographic operations in progress by M/V puerto deseado in 54-25.3S 058-22.7W2016-03-29
- Oceanographic operations in progress until further notice by M/V puerto deseado in: a. 54-41.3S 060-35.7W2014-11-16
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
55 survey operations listed in force · see all
Record snapshot 2026-10-02 03:09Z; 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.