Hazardous operations 0200Z to 1200Z daily 06 nov thru 01 dec in areas bound by: a. 44-26.33N 001-15.67W,…
North Atlantic Ocean · HYDROLANT 2498/23
What this record establishes
Archived notice · 2023-12-01 13:00Z
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 0/23 180945Z OCT 23.. Issued 2023-11-02 09:45Z. 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 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
Current notices and reporting history in the North Atlantic Ocean →
Activity windows · 26 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-11-06 02:00Z | 2023-11-06 12:00Z | — | 10 h |
| 2023-11-07 02:00Z | 2023-11-07 12:00Z | — | 10 h |
| 2023-11-08 02:00Z | 2023-11-08 12:00Z | — | 10 h |
| 2023-11-09 02:00Z | 2023-11-09 12:00Z | — | 10 h |
| 2023-11-10 02:00Z | 2023-11-10 12:00Z | — | 10 h |
| 2023-11-11 02:00Z | 2023-11-11 12:00Z | — | 10 h |
| 2023-11-12 02:00Z | 2023-11-12 12:00Z | — | 10 h |
| 2023-11-13 02:00Z | 2023-11-13 12:00Z | — | 10 h |
| … 18 more | |||
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2023-11-02 09:45Z
- status
- Archived notice
- self-cancels
- 2023-12-01 13:00Z
- authority
- NAVAREA II 0/23 180945Z OCT 23.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- North Atlantic Ocean
- position
- 46.099, -16.267
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BAY OF BISCAY.
NORTH ATLANTIC.
FRANCE.
DNC 08.
1. HAZARDOUS OPERATIONS 0200Z TO 1200Z DAILY
06 NOV THRU 01 DEC IN AREAS BOUND BY:
A. 44-26.33N 001-15.67W, 44-28.00N 001-20.00W,
44-35.00N 001-27.75W, 44-44.75N 002-17.25W,
44-23.50N 002-25.00W, 44-14.75N 001-35.75W,
44-17.25N 001-26.75W, 44-18.00N 001-17.00W.
B. 45-14.20N 005-17.59W, 45-22.57N 006-11.45W,
45-05.33N 006-16.65W, 44-57.02N 005-23.05W.
C. 45-14.20N 005-17.59W, 44-57.02N 005-23.05W,
44-23.50N 002-24.98W, 44-44.75N 002-17.25W.
D. 47-08.05N 014-18.15W, 47-20.18N 017-10.22W,
45-33.86N 017-23.14W, 45-22.12N 014-36.47W.
E. 47-05.02N 029-54.25W, 46-58.67N 031-53.87W,
46-11.74N 031-47.78W, 46-17.98N 029-49.87W.
2. CANCEL HYDROLANT 2484/23.
3. CANCEL THIS MSG 011300Z DEC 23.
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.
- Hazardous operations
- NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
- 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.
- 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.
Collected reports in this area · military exercises
4 within 180 nm since 2001 · 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.
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
31 military exercises listed in force · see all
Record snapshot 2026-09-29 09:36Z; source collection times vary.
Exercises
Gunnery, firing and naval exercise areas. All current military exercises →
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.