Exercises

Hazardous operations 0500Z to 2000Z daily 09 thru 20 jul in area bound by 41-12.88N 029-07.83E, 41-10.88N…

Sea of Marmara · HYDROLANT 1197/07

What this record establishes

Archived notice · 2007-07-20 21:00Z

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 289/07 081038Z JUL 07.. Issued 2007-07-08 12:37Z. 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
Sea of Marmara. 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 Sea of Marmara →

Activity windows · 12 in this warning

opens (UTC)closes (UTC)locallength
2007-07-09 05:00Z2007-07-09 20:00Z—15 h
2007-07-10 05:00Z2007-07-10 20:00Z—15 h
2007-07-11 05:00Z2007-07-11 20:00Z—15 h
2007-07-12 05:00Z2007-07-12 20:00Z—15 h
2007-07-13 05:00Z2007-07-13 20:00Z—15 h
2007-07-14 05:00Z2007-07-14 20:00Z—15 h
2007-07-15 05:00Z2007-07-15 20:00Z—15 h
2007-07-16 05:00Z2007-07-16 20:00Z—15 h
… 4 more

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

issued
2007-07-08 12:37Z
status
Archived notice
self-cancels
2007-07-20 21:00Z
authority
NAVAREA III 289/07 081038Z JUL 07.
NAVAREA
NAVAREA III · named as the source of this relay
sea
Sea of Marmara
position
41.199, 29.112
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. HAZARDOUS OPERATIONS 0500Z TO 2000Z DAILY
   09 THRU 20 JUL IN AREA BOUND BY
   41-12.88N 029-07.83E, 41-10.88N 029-07.30E,
   41-11.37N 029-05.83E, 41-12.60N 029-05.72E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 202100Z JUL.

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.
Wide berth requested
Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
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

317 within 180 nm since 1999 · 4 in the last 12 months · 0 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

28 military exercises listed in force · see all

Record snapshot 2026-10-01 23:26Z; 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.