Cable ops

Seismic survey in progress until 28 feb by M/V western trident and M/V wg vespucci towing ten 5.3 mile long…

Red Sea · HYDROPAC 7/11

What this record establishes

Archived notice · 2011-03-01 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 IX 1/11 010905Z JAN 11.. Issued 2011-01-01 09:45Z. 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
Red Sea. 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 Red Sea →

issued
2011-01-01 09:45Z
status
Archived notice
authority
NAVAREA IX 1/11 010905Z JAN 11.
NAVAREA
NAVAREA IX · named as the source of this relay
sea
Red Sea
position
23.317, 38.091
vessels
M/V WESTERN TRIDENT · 92 messagesM/V WG VESPUCCI · 26 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

RED SEA.
1. SEISMIC SURVEY IN PROGRESS UNTIL 28 FEB BY
   M/V WESTERN TRIDENT AND M/V WG VESPUCCI
   TOWING TEN 5.3 MILE LONG CABLES
   IN AREA BOUND BY
   23-47N 037-59E, 23-21N 038-35E,
   22-50N 038-11E, 23-19N 037-36E.
   SEVEN MILE BERTH REQUESTED.
2. CANCEL HYDROPAC 2581/10.
3. CANCEL THIS MSG 01 MAR.

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.
Tow / towing
A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
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.
HYDROPAC
The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf 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

16 within 180 nm since 2003 · 0 in the last 12 months · 0 listed in force now

03
05
10
15
20
23

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

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

Worldwide in the collected sources

24 cable & pipeline work listed in force · see all

Record snapshot 2026-10-01 23:33Z; 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.