Cable ops

Seismic survey in progress until 10 dec by M/V oceanic vega towing 9300 meter long cable in area bound by…

South Atlantic Ocean · HYDROLANT 3258/16

What this record establishes

Archived notice · 2016-12-11 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 V COASTAL 1023/16 030403Z DEC 16.. Issued 2016-12-03 04:37Z. 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
South Atlantic Ocean. 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 South Atlantic Ocean →

issued
2016-12-03 04:37Z
status
Archived notice
authority
NAVAREA V COASTAL 1023/16 030403Z DEC 16.
NAVAREA
NAVAREA V · named as the source of this relay
issued by
NAVAREA V COASTAL
sea
South Atlantic Ocean
position
-26.027, -40.489
vessel
M/V OCEANIC VEGA · 63 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WESTERN SOUTH ATLANTIC.
BRAZIL-SOUTHEAST COAST.
DNC 01.
1. SEISMIC SURVEY IN PROGRESS UNTIL 10 DEC BY
   M/V OCEANIC VEGA TOWING 9300 METER LONG CABLE
   IN AREA BOUND BY
   24-51.65S 043-01.10W, 24-38.40S 042-32.88W,
   24-37.80S 041-48.73W, 23-14.70S 038-48.82W,
   26-29.75S 037-10.58W, 28-30.15S 041-05.40W,
   27-27.78S 041-38.43W, 28-13.98S 043-18.45W,
   26-42.83S 044-06.02W, 25-57.68S 042-26.13W.
2. CANCEL THIS MSG 11 DEC 16.

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.
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.
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.

All warning terms →

Collected reports in this area · cable & pipeline work

1372 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
00
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

23 cable & pipeline work listed in force · see all

Record snapshot 2026-10-03 21:14Z; 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.