Exercises

Gunnery exercises: a. 050400Z to 051100Z may in area bound by 44-27N 007-20W, 44-19N 005-18W, 43-50N…

Bay of Biscay · HYDROLANT 777/10

What this record establishes

Archived notice · 2010-05-06 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 164/10 032210Z MAY 10.. Issued 2010-05-03 23:08Z. 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)locallength
2010-05-05 04:00Z2010-05-05 11:00Z—7 h
2010-05-06 04:00Z2010-05-06 12:00Z—8 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued
2010-05-03 23:08Z
status
Archived notice
self-cancels
2010-05-06 13:00Z
authority
NAVAREA II 164/10 032210Z MAY 10.
NAVAREA
NAVAREA II · named as the source of this relay
sea
Bay of Biscay
position
44.133, -6.317
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN NORTH ATLANTIC.
SPAIN-NORTH COAST.
PORTUGAL-WEST COAST.
GUNNERY.
1. GUNNERY EXERCISES:
   A. 050400Z TO 051100Z MAY IN AREA BOUND BY
      44-27N 007-20W, 44-19N 005-18W,
      43-50N 005-18W, 43-57N 007-20W.
   B. 060400Z TO 061200Z MAY IN AREA BOUND BY
      40-22N 010-24W, 40-22N 009-19W,
      39-38N 009-25W, 39-27N 009-40W,
      39-03N 009-43W, 39-03N 010-24W.
2. CANCEL THIS MSG 061300Z MAY.

Reading this warning

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.

All warning terms →

Collected reports in this area · military exercises

55 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
00
05
10
15
20
24

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

J
F
M
A
M
J
J
A
S
O
N
D

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 2026-10-03 03:16Z; 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.

Gunnery exercises: a. 050400Z to 051100Z may in area bound by 44-27N 007-20W, 44-19N 005-18W, 43-50N… — HYDROLANT 777/10 · seahazards