Underwater operations in progress until 27 feb by M/V manning in area bound by 44-12.42N 009-31.62E,…
Ligurian Sea · HYDROLANT 454/02
What this record establishes
Archived notice · 2002-02-28 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) · MARIDIPART LA SPEZIA 80/02 211455Z FEB 02; NAVAREA V 237/02 251230Z FEB 02. Issued 2002-02-25 15:24Z. 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
- Ligurian Sea. 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
- Underwater operations 18 thru 26 feb by M/V manning in area bound by 44-05.0N 009-40.0E, 44-05.5N 009-44.5E,…cancelled by this notice
- Man overboard vicinity 00-10S 048-31W at 230001Z febcancelled by this notice
- issued
- 2002-02-25 15:24Z
- status
- Archived notice
- authority
- MARIDIPART LA SPEZIA 80/02 211455Z FEB 02; NAVAREA V 237/02 251230Z FEB 02
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- MARIDIPART LA SPEZIA
- sea
- Ligurian Sea
- position
- 44.180, 9.572
- vessel
- M/V MANNING · 22 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 27 FEB BY M/V MANNING IN AREA BOUND BY 44-12.42N 009-31.62E, 44-12.21N 009-31.38E, 44-11.15N 009-33.42E, 44-09.46N 009-35.60E, 44-09.97N 009-36.48E. 2. CANCEL HYDROLANT 380/02 AND 443/02(24). 3. CANCEL THIS MSG 28 FEB.
Reading this warning
- 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.
- 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
166 within 180 nm since 1998 · 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 22 jul thru 13 aug by M/V tethys II, M/V l`europe, and M/V sagitta III in area bound by…2023-07-20
- Survey operations in progress until 19 jul by M/V five in area bound by 43-49.26N 009-54.46E, 44-09.71N…2023-07-18
- Survey operations in progress until 30 mar by M/V ocean link along trackling joining 43-14.09N 007-46.66E,…2023-03-17
- Survey operations 02 thru 17 feb by M/V tethys II, M/V l europe and M/V sagitta III in area bound by…2023-01-30
- Survey operations 07 thru 15 jul by M/V thetys II, M/V l'europe and M/V saggitta III in area bound by…2022-07-05
- Survey operations 27 may thru 06 jun by M/V thetys II, M/V l`europe and M/V saggitta III in area bound by…2022-05-26
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 2026-10-02 17:03Z; 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.