Gunnery exercises 281400Z to 281700Z nov in area bound by 46-07.70N 005-00.00W, 46-20.00N 004-53.80W,…
Bay of Biscay · HYDROLANT 2737/23
What this record establishes
Archived notice · 2023-11-28 18:00Z
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) · AVURNAV BREST 396/23 271519Z NOV 23.. Issued 2023-11-27 16:00Z. 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
- Bay of Biscay. 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
- East kish buoy 53-14.30N 005-53.60W unlitcancelled by this notice
Current notices and reporting history in the Bay of Biscay →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-11-28 14:00Z | 2023-11-28 17:00Z | — | 3 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2023-11-27 16:00Z
- status
- Archived notice
- self-cancels
- 2023-11-28 18:00Z
- authority
- AVURNAV BREST 396/23 271519Z NOV 23.
- issued by
- AVURNAV BREST
- sea
- Bay of Biscay
- position
- 46.062, -4.632
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BAY OF BISCAY. FRANCE. DNC 08. 1. GUNNERY EXERCISES 281400Z TO 281700Z NOV IN AREA BOUND BY 46-07.70N 005-00.00W, 46-20.00N 004-53.80W, 46-20.00N 004-16.30W, 46-16.30N 004-00.00W, 45-40.00N 004-46.30W, 45-40.00N 004-59.60W. 2. CANCEL HYDROLANT 2734/23(36). 3. CANCEL THIS MSG 281800Z NOV 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.
- Gunnery and live firing
- Naval or coastal guns firing into a sea area for practice, at stated times.
- 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.
- 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 · military exercises
518 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.
- Gunnery exercises 021100Z to 021300Z and 021400Z to 021600Z may in area bound by 48-20.40N 004-37.00W,…2024-05-02
- Gunnery exercises 010700Z to 010900Z may in area bound by 48-21.00N 005-20.00W, 48-21.00N 004-53.00W,…2024-04-30
- Gunnery exercises 291400Z to 291600Z apr in area bound by 48-20.40N 004-37.00W, 48-20.01N 004-39.52W,…2024-04-26
- Hazardous operations 301100 to 301400 and 301900Z to 302200Z apr in area bound by 44-35.00N 001-32.00W,…2024-04-26
- Gunnery exercises 231300Z to 231500Z and 231700Z to 231900Z apr in area bound by 47-46.40N 005-00.00W,…2024-04-22
- Gunnery exercises 200600Z to 200900Z apr in area bound by 48-20.40N 004-37.00W, 48-20.01N 004-39.52W,…2024-04-19
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
28 military exercises listed in force · see all
Record snapshot 2026-10-01 21:45Z; 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.