Cable ops

Seismic survey in progress until 31 dec by M/V princess towing 12500 meter long cable vicinity of trackline…

Mediterranean Sea - Eastern Basin · HYDROLANT 2076/11

What this record establishes

Archived notice · 2012-01-01 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 491/11 071524Z DEC 11.. Issued 2011-12-07 15:40Z. 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 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 Mediterranean Sea - Eastern Basin →

issued
2011-12-07 15:40Z
status
Archived notice
authority
NAVAREA III 491/11 071524Z DEC 11.
NAVAREA
NAVAREA III · named as the source of this relay
sea
Mediterranean Sea - Eastern Basin
position
32.434, 31.599
vessel
M/V PRINCESS · 19 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN MEDITERRANEAN SEA.
1. SEISMIC SURVEY IN PROGRESS UNTIL 31 DEC BY
   M/V PRINCESS TOWING 12500 METER LONG CABLE
   VICINITY OF TRACKLINE JOINING
   33-20.3N 028-29.9E, 33-45.0N 030-05.0E,
   32-53.1N 032-59.5E, 31-23.0N 034-00.7E,
   31-21.5N 033-40.5E, 31-24.8N 033-04.6E,
   31-32.4N 032-58.4E, 31-45.7N 032-18.2E,
   31-46.0N 031-26.9E, 31-52.9N 030-53.7E,
   31-48.9N 030-22.3E, 31-40.5N 030-09.4E,
   31-21.8N 029-55.8E, 31-12.3N 029-31.2E.
   EIGHT MILE BERTH REQUESTED.
2. CANCEL THIS MSG 01 JAN 12.

Reading this warning

Seismic survey
A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
Towed array / streamer
Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
Tow / towing
A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
Track line joining
Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
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 · cable & pipeline work

237 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
00
05
10
15
20
21

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

24 cable & pipeline work listed in force · see all

Record snapshot 2026-10-02 06:36Z; source collection times vary.

Cable ops

Cable laying, pipeline and seismic operations. All current cable & pipeline work →

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.