Underwater operations by M/V thalassa: a. 02 aug in 36-15.0N 029-19.9W
North Atlantic Ocean · HYDROLANT 1765/12
What this record establishes
Archived notice · 2012-08-04 00:01Z
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 240/12 012139Z AUG 12.. Issued 2012-08-02 08:13Z. 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 parsed report position is 34.852, -30.867. 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 North Atlantic Ocean →
- issued
- 2012-08-02 08:13Z
- status
- Archived notice
- authority
- NAVAREA II 240/12 012139Z AUG 12.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- North Atlantic Ocean
- position
- 34.852, -30.867
- 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 BY M/V THALASSA: A. 02 AUG IN 36-15.0N 029-19.9W. B. 03 AUG IN 33-27.2N 032-24.1W. 2. CANCEL THIS MSG 04 AUG 12.
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.
- 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
17 within 180 nm since 2002 · 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 10 thru 23 jun by M/V thalassa within four miles of: a. 37-04.85N 031-55.18W2016-06-06
- Underwater operations 10 thru 23 jun by M/V thalassa within four miles of: a. 37-04.85N 031-55.18W2016-06-06
- Underwater operations in progress until 192359Z jun by M/V le suroit in: a. 37-04.9N 031-55.2W2014-06-10
- Underwater operations 03 thru 21 aug by M/V pourquoi pas with submersible along trackline joining 37-51N…2013-08-02
- Underwater operations in progress until 24 jul by M/V thalassa with submersible in 37-17N 032-16W2012-07-17
- Survey operations 26 jun thru 27 jul by M/V pourquoi pas with submersible in area bound by 37-17.3N…2011-06-23
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 22:36Z; 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.