Gunnery exercises 261200Z to 261400Z and 262200Z to 262359Z sep in area bound by 46-40.00N 003-48.45W,…
Bay of Biscay · HYDROLANT 2159/23
What this record establishes
Archived notice · 2023-09-27 01:00Z
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 306/23 251705Z SEP 23.. Issued 2023-09-25 17:35Z. 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.
Current notices and reporting history in the Bay of Biscay →
Activity windows · 2 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2023-09-26 12:00Z | 2023-09-26 14:00Z | — | 2 h |
| 2023-09-26 22:00Z | 2023-09-26 23:59Z | — | 1 h 59 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2023-09-25 17:35Z
- status
- Archived notice
- self-cancels
- 2023-09-27 01:00Z
- authority
- AVURNAV BREST 306/23 251705Z SEP 23.
- issued by
- AVURNAV BREST
- sea
- Bay of Biscay
- position
- 46.992, -4.163
- 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 261200Z TO 261400Z AND 262200Z TO 262359Z SEP IN AREA BOUND BY 46-40.00N 003-48.45W, 46-40.00N 004-43.70W, 47-15.46N 004-22.61W, 47-25.00N 004-09.91W, 47-25.00N 003-58.55W, 47-22.09N 003-53.56W, 47-18.93N 003-46.53W. 2. CANCEL THIS MSG 270100Z SEP 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.
- 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
502 within 180 nm since 1999 · 1 in the last 12 months · 1 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.
- Special operations2026-10-02
- 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
- 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
9 military exercises listed in force · see all
Record snapshot 2026-10-02 17:49Z; 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.