Underwater operations 29 jun thru 06 jul by M/V thalassa with submersible along tracklinwe between 40-21N…
North Atlantic Ocean · HYDROLANT 1385/12
What this record establishes
Archived notice · 2012-07-07 00:00Z
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 II 188/12 252101Z JUN 12.. Issued 2012-06-25 21:27Z. 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
- North 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.
Current notices and reporting history in the North Atlantic Ocean →
- issued
- 2012-06-25 21:27Z
- status
- Archived notice
- authority
- NAVAREA II 188/12 252101Z JUN 12.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- North Atlantic Ocean
- position
- 39.925, -26.800
- vessel
- M/V THALASSA · 139 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
NORTH ATLANTIC. AZORES. 1. UNDERWATER OPERATIONS 29 JUN THRU 06 JUL BY M/V THALASSA WITH SUBMERSIBLE ALONG TRACKLINWE BETWEEN 40-21N 026-48W AND 39-30N 026-48W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 07 JUL.
Reading this warning
- 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.
Collected reports in this area · survey operations
5 within 180 nm since 2012 · 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 07 jul by M/V sarmiento de gamboa in area bound by 39-32N 030-10W,…2019-07-04
- Underwater operations in progress until 01 jul by M/V sarmiento de gamboa in area bound by 39-28N 029-42W,…2019-06-29
- Underwater operations 28 and 29 jun by M/V sarmiento de gamboa in area bound by 39-28N 029-42W, 39-28N…2019-06-28
- Underwater operations 28 and 29 jun by M/V sarmiento de gamboa in area bound by 39-28N 029-42W, 39-28N…2019-06-27
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
50 survey operations listed in force · see all
Record snapshot 2026-09-24 22:26Z; 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.