Exercises

Hazardous operations 0330Z to 0730Z daily 11 and 12 aug in area bound by 21-33.78N 087-16.87E, 21-24.95N…

Bay of Bengal · HYDROPAC 2257/21

What this record establishes

Archived notice · 2021-08-11 10:26Z

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 VIII 583/21 061606Z AUG 21.. Issued 2021-08-06 16:07Z. 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 Bengal. 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 Bay of Bengal →

issued
2021-08-06 16:07Z
status
Archived notice
self-cancels
2021-08-12 08:30Z
authority
NAVAREA VIII 583/21 061606Z AUG 21.
NAVAREA
NAVAREA VIII · named as the source of this relay
sea
Bay of Bengal
position
20.619, 87.236
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

BAY OF BENGAL.
INDIA.
DNC 03.
1. HAZARDOUS OPERATIONS 0330Z TO 0730Z
   DAILY 11 AND 12 AUG IN AREA BOUND BY
   21-33.78N 087-16.87E, 21-24.95N 086-58.42E,
   21-19.70N 086-53.60E, 21-09.77N 086-48.83E,
   20-57.35N 086-54.47E, 20-46.92N 087-08.03E,
   20-38.67N 087-08.17E, 19-53.48N 086-25.58E,
   19-30.97N 086-43.27E, 20-51.13N 088-05.37E.
2. CANCEL THIS MSG 120830Z AUG 21.

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.
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

903 within 180 nm since 2000 · 16 in the last 12 months · 0 listed in force now

00
05
10
15
20
25
26

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 19:51Z; 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.