Exercises

Hazardous operations 0300Z to 0430Z, 0800Z to 1000Z, 1300Z to 1500Z and 1800Z to 1930Z daily 05 and 06 mar…

Aegean Sea · HYDROLANT 854/20

What this record establishes

Archived notice · 2020-03-06 20:30Z

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 374/20 042339Z MAR 20.. Issued 2020-03-05 05:22Z. 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: Aegean 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 Aegean Sea →

issued: 2020-03-05 05:22Z
status: Archived notice
self-cancels: 2020-03-06 20:30Z
authority: NAVAREA III 374/20 042339Z MAR 20.
NAVAREA: NAVAREA III · named as the source of this relay
sea: Aegean Sea
position: 37.049, 27.080
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

AEGEAN SEA.
DNC 10.
1. HAZARDOUS OPERATIONS 0300Z TO 0430Z,
   0800Z TO 1000Z, 1300Z TO 1500Z AND
   1800Z TO 1930Z DAILY 05 AND 06 MAR
   IN AREAS BOUND BY:
   A. 37-01.95N 027-03.15E, 37-01.95N 027-05.43E,
      37-03.53N 027-05.43E, 37-03.53N 027-03.15E.
   B. 37-04.05N 027-05.68E, 37-04.05N 027-06.67E,
      37-02.70N 027-06.67E, 37-02.70N 027-05.68E.
2. CANCEL THIS MSG 062030Z MAR 20.

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

1236 within 180 nm since 1998 · 1 in the last 12 months · 1 listed in force now

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

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

Hazardous operations sunrise to sunset daily until 14 jun and 16 sep thru 31 dec in area bound by 38-16.00N…Exercises · 98.4 nm
Missile operations 0530Z to sunset daily every wednesday thru saturday until 14 jun and 16 seb thru 31 dec…Missiles · 105.6 nm

Worldwide in the collected sources

9 military exercises listed in force · see all

Record snapshot 2026-10-04 02:02Z; 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.