Exercises

Hazardous operations 0530Z to 2230Z daily 09 and 10 jun, and 0500Z to 1600Z daily 11 and 12 jun in area…

Black Sea · HYDROLANT 1524/21

What this record establishes

Archived notice · 2021-06-12 17:00Z

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 III 506/21 071201Z JUN 21.. Issued 2021-06-07 12:46Z. 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
Black Sea. 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 Black Sea →

issued
2021-06-07 12:46Z
status
Archived notice
self-cancels
2021-06-12 17:00Z
authority
NAVAREA III 506/21 071201Z JUN 21.
NAVAREA
NAVAREA III · named as the source of this relay
sea
Black Sea
position
43.375, 29.296
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

BLACK SEA.
BULGARIA.
DNC 10.
1. HAZARDOUS OPERATIONS 0530Z TO 2230Z DAILY
   09 AND 10 JUN, AND 0500Z TO 1600Z DAILY
   11 AND 12 JUN IN AREA BOUND BY
   43-43.0N 028-51.0E, 43-42.7N 029-49.1E,
   43-04.0N 029-49.1E, 43-04.0N 028-42.0E,
   43-11.0N 028-36.0E, 43-15.0N 028-43.0E,
   43-24.0N 028-50.0E, 43-32.0N 028-53.0E,
   43-43.0N 028-51.0E.
2. CANCEL THIS MSG 121700Z JUN 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

928 within 180 nm since 1999 · 11 in the last 12 months · 1 listed in force now

99
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

Worldwide in the collected sources

9 military exercises listed in force · see all

Record snapshot 2026-10-03 04:01Z; 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.