Cable ops

Seismic survey in progress until 15 nov by M/V sharona, M/V glomar venture and M/V thor beamer in area bound…

Mediterranean Sea - Eastern Basin · HYDROLANT 1493/11

What this record establishes

Archived notice · 2011-10-29 09:05Z

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 377/11 151154Z SEP 11.. Issued 2011-09-16 15:53Z. 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.

Related notices and cancellation links

Current notices and reporting history in the Mediterranean Sea - Eastern Basin →

issued
2011-09-16 15:53Z
status
Archived notice
authority
NAVAREA III 377/11 151154Z SEP 11.
NAVAREA
NAVAREA III · named as the source of this relay
sea
Mediterranean Sea - Eastern Basin
position
35.521, 30.964
vessels
M/V GLOMAR VENTURE · 2 messagesM/V SHARONA · 4 messagesM/V THOR BEAMER · 3 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 15 NOV BY
   M/V SHARONA, M/V GLOMAR VENTURE AND
   M/V THOR BEAMER IN AREA BOUND BY
   34-30.85N 029-29.53E, 35-53.67N 029-32.53E,
   36-14.83N 030-15.15E, 36-08.47N 030-25.18E,
   36-45.70N 030-41.20E, 36-45.97N 031-18.50E,
   36-30.55N 032-01.22E, 36-04.18N 032-28.78E,
   35-35.93N 032-41.08E, 35-16.00N 032-00.00E,
   34-23.13N 031-41.83E.
   FIVE MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 1483/11.
3. CANCEL THIS MSG 16 NOV.

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.
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.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROLANT
The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
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

70 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 11:50Z; 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.