Cable ops

Seismic survey in progress until 10 feb 16 by M/V ramform atlas towing 14 9000 meter long cables in area…

South Atlantic Ocean · HYDROLANT 2240/15

What this record establishes

Archived notice · 2015-09-16 01:23Z

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 N 828/15 100347Z SEP 15.. Issued 2015-09-10 09:40Z. 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
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
2015-09-10 09:40Z
status
Archived notice
authority
NAVAREA V N 828/15 100347Z SEP 15.
NAVAREA
NAVAREA V · named as the source of this relay
issued by
NAVAREA V N
sea
South Atlantic Ocean
position
-2.159, -39.176
vessel
M/V RAMFORM ATLAS · 76 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

BRAZIL-NORTH COAST.
DNC 01.
1. SEISMIC SURVEY IN PROGRESS UNTIL 10 FEB 16
   BY M/V RAMFORM ATLAS TOWING 14
   9000 METER LONG CABLES IN AREA BOUND BY
   02-12.34S 038-32.36W, 02-28.65S 038-11.16W,
   03-19.35S 038-09.70W, 03-10.55S 038-35.73W,
   03-02.77S 038-47.61W, 02-53.59S 039-00.15W,
   02-37.34S 038-47.85W, 02-41.68S 039-13.11W,
   02-27.08S 039-24.96W, 02-18.35S 039-34.81W,
   01-21.75S 040-23.02W, 00-56.96S 040-06.39W,
   01-48.56S 039-01.71W.
2. CANCEL THIS MSG 11 FEB 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

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

99
00
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

23 cable & pipeline work listed in force · see all

Record snapshot 2026-09-25 00:54Z; 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.