Restricted

Navigation prohibited 232159Z to 240400Z and 242100Z to 242300Z mar between 40-57.6N 028-58.3E and 41-14.0N…

Sea of Marmara · HYDROLANT 465/07

What this record establishes

Archived notice · 2007-03-25 00:01Z

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 117/07 221036Z MAR 07.. Issued 2007-03-22 11:23Z. 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 the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Current notices and reporting history in the Sea of Marmara →

Activity windows · 2 in this warning

opens (UTC)	closes (UTC)	local	length
2007-03-23 21:59Z	2007-03-24 04:00Z	—	6 h 01
2007-03-24 21:00Z	2007-03-24 23:00Z	—	2 h

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

issued: 2007-03-22 11:23Z
status: Archived notice
self-cancels: 2007-03-25 00:01Z
authority: NAVAREA III 117/07 221036Z MAR 07.
NAVAREA: NAVAREA III · named as the source of this relay
sea: Sea of Marmara
position: 41.097, 29.052
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. NAVIGATION PROHIBITED 232159Z TO 240400Z AND
   242100Z TO 242300Z MAR BETWEEN
   40-57.6N 028-58.3E AND 41-14.0N 029-08.0E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 250001Z MAR.

Reading this warning

Navigation prohibited: Ships may not enter or pass through the area, or a port is closed to traffic.
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.
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.

All warning terms →

Collected reports in this area · restricted areas & port closures

3 within 180 nm since 2007 · 0 in the last 12 months · 0 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.

Nga chart 55047(8TH ed)2008-03-12
Nga chart 55047 (8TH ed)2007-10-01

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

Drilling operations by fatih platform (imo 9503770Surveys · 82.1 nm

Worldwide in the collected sources

2 restricted areas & port closures listed in force · see all

Record snapshot 2026-10-03 02:35Z; source collection times vary.

Restricted

Navigation prohibited, exclusion and security zones, ports closed to traffic. All current restricted areas & port closures →

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.