Survey operations 25 sep thru 06 oct by M/V kommandor iona in area bound by 43-11.18N 009-34.12E, 43-13.11N…
Ligurian Sea · HYDROLANT 2386/21
What this record establishes
Archived notice · 2021-09-28 12:56Z
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 III 714/21 231200Z SEP 21.. Issued 2021-09-23 09:30Z. 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
- Cancel HYDROLANT 2275/21, 2386/21 and this msglater cancellation notice
- issued
- 2021-09-23 09:30Z
- status
- Archived notice
- authority
- NAVAREA III 714/21 231200Z SEP 21.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Ligurian Sea
- position
- 43.444, 9.160
- vessel
- M/V KOMMANDOR IONA · 13 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
LIGURIAN SEA. CORSICA. DNC 08. 1. SURVEY OPERATIONS 25 SEP THRU 06 OCT BY M/V KOMMANDOR IONA IN AREA BOUND BY 43-11.18N 009-34.12E, 43-13.11N 009-33.31E, 43-18.15N 009-31.08E, 43-19.23N 009-29.54E, 43-21.23N 009-28.54E, 43-23.05N 009-28.52E, 43-26.50N 009-26.00E, 43-28.04N 009-23.42E, 43-28.25N 009-22.08E, 43-28.37N 009-08.49E, 43-28.52N 009-06.51E, 43-29.44N 009-04.57E, 43-34.47N 008-59.32E, 43-38.22N 008-52.41E, 43-39.11N 008-42.48E, 43-38.29N 008-37.06E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 07 OCT 21.
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.
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- 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
193 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
- Scientific buoys temporarily established by M/V thalassa 15 jul thru 30 aug in: a. dyfamed, 43-25.00N…2023-07-11
- Survey operations 120900Z to 172359Z apr by M/V l'atalante in vicinity of trackline joining 40-56.00N…2023-04-11
- 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
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 2026-10-01 10:56Z; 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.