Exercises

Hazardous operations 2000Z to 0103Z commencing daily 30 sep thru 30 oct in areas: a. within 12 miles of…

North Atlantic Ocean · HYDROLANT 1849/09

What this record establishes

Archived notice · 2009-10-02 12:49Z

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 V N 2001/09 25 SEP 09.. Issued 2009-09-25 10:06Z. 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 · 31 in this warning

opens (UTC)closes (UTC)locallength
2009-09-30 20:00Z2009-10-01 01:03Z—5 h 03
2009-10-01 20:00Z2009-10-02 01:03Z—5 h 03
2009-10-02 20:00Z2009-10-03 01:03Z—5 h 03
2009-10-03 20:00Z2009-10-04 01:03Z—5 h 03
2009-10-04 20:00Z2009-10-05 01:03Z—5 h 03
2009-10-05 20:00Z2009-10-06 01:03Z—5 h 03
2009-10-06 20:00Z2009-10-07 01:03Z—5 h 03
2009-10-07 20:00Z2009-10-08 01:03Z—5 h 03
… 23 more

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

issued
2009-09-25 10:06Z
status
Archived notice
self-cancels
2009-10-31 02:03Z
authority
NAVAREA V N 2001/09 25 SEP 09.
NAVAREA
NAVAREA V · named as the source of this relay
issued by
NAVAREA V N
sea
North Atlantic Ocean
position
4.675, -42.403
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 2000Z TO 0103Z COMMENCING
   DAILY 30 SEP THRU 30 OCT IN AREAS:
   A. WITHIN 12 MILES OF TRACKLINE BETWEEN
      05-19N 052-47W AND 05-04N 052-30W.
   B. BOUND BY
      05-11N 047-31W, 04-40N 047-33W,
      04-44N 048-30W, 05-15N 048-28W.
   C. BOUND BY
      04-56N 045-59W, 04-40N 046-00W,
      04-47N 047-41W, 05-04N 047-40W.
   D. BOUND BY
      05-14N 043-43W, 04-15N 043-46W,
      04-06N 041-06W, 05-06N 041-02W.
2. CANCEL THIS MSG 310203Z OCT.

Reading this warning

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.
Within a radius of
A circular area — every position within a stated distance of a point.
Track line joining
Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
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.
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.

All warning terms →

Collected reports in this area · military exercises

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

99
00
05
10
15
18

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

10 military exercises listed in force · see all

Record snapshot 2026-10-03 06:37Z; 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.