Underwater operations 180800Z to 192200Z nov by M/V willchallenge in vicinity of 50-19.0N 004-14.7W
English Channel · HYDROLANT 2952/22
What this record establishes
Archived notice · 2022-11-19 23:00Z
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) · WZ 1148/22 171110Z NOV 22.. Issued 2022-11-17 11:31Z. 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
- English Channel. The parsed report position is 50.317, -4.245. 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 English Channel →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2022-11-18 08:00Z | 2022-11-19 22:00Z | — | 38 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2022-11-17 11:31Z
- status
- Archived notice
- self-cancels
- 2022-11-19 23:00Z
- authority
- WZ 1148/22 171110Z NOV 22.
- issued by
- WZ
- sea
- English Channel
- position
- 50.317, -4.245
- vessel
- M/V WILLCHALLENGE · 8 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ENGLISH CHANNEL. ENGLAND. DNC 20. 1. UNDERWATER OPERATIONS 180800Z TO 192200Z NOV BY M/V WILLCHALLENGE IN VICINITY OF 50-19.0N 004-14.7W. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 192300Z NOV 22.
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.
- 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.
- 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
709 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 further notice by M/V mintaka I in vicinity of trackline joining…2023-08-06
- Survey operations 15 sept thru 20 oct by M/V thlassa in vicinity of trackline joining 48-30.00N 006-00.00W,…2022-09-14
- Scientific moorings established until 30 sep by M/V armorique in: a. 47-40.85N 004-30.70W2022-09-13
- Survey operations in progress until 10 sep by M/V laperouse and M/V borda along trackline joining 48-27.48N…2022-09-01
- Underwater operations in progress until further notice by unmanned submersible ALR4 in vicinity of trackline…2022-06-10
- Underwater operations in progress until further notice by submersible in vicinity of trackline joining…2022-05-10
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 22:56Z; 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.