Exercises

Hazardous operations 2000Z to 0114Z commencing daily 16 apr thru 17 may in area bound by: a. 05-12N 043-36W,…

North Atlantic Ocean · HYDROLANT 848/02

What this record establishes

Archived notice · 2002-04-18 04:52Z

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 475/02. Issued 2002-04-12 18:17Z. 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 · 32 in this warning

opens (UTC)closes (UTC)locallength
2002-04-16 20:00Z2002-04-17 01:14Z—5 h 14
2002-04-17 20:00Z2002-04-18 01:14Z—5 h 14
2002-04-18 20:00Z2002-04-19 01:14Z—5 h 14
2002-04-19 20:00Z2002-04-20 01:14Z—5 h 14
2002-04-20 20:00Z2002-04-21 01:14Z—5 h 14
2002-04-21 20:00Z2002-04-22 01:14Z—5 h 14
2002-04-22 20:00Z2002-04-23 01:14Z—5 h 14
2002-04-23 20:00Z2002-04-24 01:14Z—5 h 14
… 24 more

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

issued
2002-04-12 18:17Z
status
Archived notice
self-cancels
2002-05-18 02:14Z
authority
NAVAREA V 475/02
NAVAREA
NAVAREA V · named as the source of this relay
sea
North Atlantic Ocean
position
4.990, -44.299
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 0114Z COMMENCING DAILY
   16 APR THRU 17 MAY IN AREA BOUND BY:
   A. 05-12N 043-36W, 04-52N 043-37W,
      04-57N 045-38W, 05-17N 045-37W.
   B. 04-50N 040-35W, 04-33N 040-36W,
      04-44N 043-21W, 05-01N 043-20W.
   C. 05-33N 049-42W, 05-25N 049-42W,
      05-16N 051-42W, 05-23N 051-43W.
2. CANCEL THIS MSG 180214Z MAY.

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.
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.
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

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

99
00
05
10
15
17

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 02:03Z; 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.