Cable ops

Seismic survey in progress until further notice by M/V pourquoi pas towing 5000 meter long cable along…

Indian Ocean · HYDROPAC 836/16

What this record establishes

Archived notice · 2016-03-29 09:42Z

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 VII 80/16 22 MAR 16.. Issued 2016-03-22 15:41Z. 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
Indian Ocean. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Indian Ocean →

issued
2016-03-22 15:41Z
status
Archived notice
authority
NAVAREA VII 80/16 22 MAR 16.
NAVAREA
NAVAREA VII · named as the source of this relay
sea
Indian Ocean
position
-27.538, 34.470
vessel
M/V POURQUOI PAS · 108 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN INDIAN OCEAN.
MOZAMBIQUE CHANNEL.
MOZAMBIQUE.
DNC 02.
SEISMIC SURVEY IN PROGRESS UNTIL FURTHER NOTICE
BY M/V POURQUOI PAS TOWING 5000 METER LONG CABLE
ALONG TRACKLINE JOINING
25-06.8S 034-39.8E, 28-12.0S 035-08.1E,
29-51.1S 034-15.0E, 25-12.6S 033-56.0E.
THREE MILE BERTH REQUESTED.

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.
Seismic survey
A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
Until further notice
The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
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.

All warning terms →

Collected reports in this area · cable & pipeline work

9 within 180 nm since 2002 · 0 in the last 12 months · 0 listed in force now

02
05
10
15
20

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 2026-10-02 00:57Z; 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.