Underwater operations 240700Z to 260700Z oct by M/V discovery in 27-52N 013-32W
North Atlantic Ocean · HYDROLANT 2051/09
What this record establishes
Archived notice · 2009-10-26 08:00Z
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 281/09 232119Z OCT 09.. Issued 2009-10-24 05:06Z. 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 27.867, -13.533. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- F/V frisby disabled and adrift in 45-22.26N 002-10.51W at 231421Z octcancelled by this notice
Current notices and reporting history in the North Atlantic Ocean →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2009-10-24 07:00Z | 2009-10-26 07:00Z | — | 48 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2009-10-24 05:06Z
- status
- Archived notice
- self-cancels
- 2009-10-26 08:00Z
- authority
- NAVAREA II 281/09 232119Z OCT 09.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- North Atlantic Ocean
- position
- 27.867, -13.533
- vessel
- M/V DISCOVERY · 52 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER OPERATIONS 240700Z TO 260700Z OCT BY M/V DISCOVERY IN 27-52N 013-32W. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 2050/09(37). 3. CANCEL THIS MSG 260800Z OCT.
Reading this warning
- 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.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
- 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
35 within 180 nm since 1999 · 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.
- Survey operations in progress until 082359Z feb by M/V ramon margalef in area within four miles of 28-00.00N…2024-02-02
- Survey operations in progress until 090800Z feb by M/V sarmiento de gamboa in area bound by 28-34.70N…2024-01-28
- Survey operations 221900Z jan thru 010800Z feb by M/V sarmiento de gamboa in area bound by 28-16.80N…2024-01-21
- Survey operations 281500Z feb to 011700Z mar by M/V sarmiento de gamboa in area within seven miles of…2023-02-28
- Underwater operations 261500Z thru 281300Z feb in area within 7 miles of 29-10.00N 015-29.00W2023-02-26
- Survey operations in progress until 21 jul by M/V fugro voyager in vacinity 28-37.60N 012-32.00W2022-07-15
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 04:01Z; 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.