Restricted

Navigation prohibited 0400Z to 1500Z daily 21, 22, 28 and 29 nov in area bound by 31-12.0N 029-51.0E,…

Mediterranean Sea - Eastern Basin · HYDROLANT 3736/17

What this record establishes

Archived notice · 2017-11-29 16:00Z

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 899/17 201328Z NOV 17.. Issued 2017-11-20 13:43Z. 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: Mediterranean Sea - Eastern Basin. 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 Mediterranean Sea - Eastern Basin →

issued: 2017-11-20 13:43Z
status: Archived notice
self-cancels: 2017-11-29 16:00Z
authority: NAVAREA III 899/17 201328Z NOV 17.
NAVAREA: NAVAREA III · named as the source of this relay
sea: Mediterranean Sea - Eastern Basin
position: 31.453, 29.739
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN MEDITERRANEAN SEA.
EGYPT.
DNC 10.
1. NAVIGATION PROHIBITED 0400Z TO 1500Z
   DAILY 21, 22, 28 AND 29 NOV
   IN AREA BOUND BY
   31-12.0N 029-51.0E, 31-25.2N 029-21.0E,
   31-43.8N 029-31.7E, 31-27.3N 030-10.2E,
   31-18.9N 030-02.9E.
2. CANCEL THIS MSG 291600Z NOV 17.

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

10 within 180 nm since 2003 · 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.

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

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

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

Record snapshot 2026-10-01 13:40Z; 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.