Cable ops

Seismic survey in progress until 28 feb by M/V harrier explorer towing 5.4 mile long cable in area bound by…

North Atlantic Ocean · HYDROLANT 284/13

What this record establishes

Archived notice · 2013-03-01 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 V 36/13 010023Z FEB 13.. Issued 2013-02-01 02:06Z. 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
North 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.

Current notices and reporting history in the North Atlantic Ocean →

issued
2013-02-01 02:06Z
status
Archived notice
authority
NAVAREA V 36/13 010023Z FEB 13.
NAVAREA
NAVAREA V · named as the source of this relay
sea
North Atlantic Ocean
position
1.905, -45.037
vessel
M/V HARRIER EXPLORER · 85 messages
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

BRAZIL-NORTH COAST.
1. SEISMIC SURVEY IN PROGRESS UNTIL 28 FEB BY
   M/V HARRIER EXPLORER TOWING 5.4 MILE LONG CABLE
   IN AREA BOUND BY
   03-41N 048-57W, 05-37N 047-07W,
   00-08N 041-03W, 01-58S 042-50W,
   01-55S 042-57W, 01-32S 043-14W,
   01-12S 043-35W, 00-53S 043-48W,
   00-10N 044-38W, 00-45N 045-54W,
   01-37N 046-55W, 02-28N 047-58W,
   03-36N 048-46W.
   SEVEN MILE BERTH REQUESTED.
2. CANCEL THIS MSG 01 MAR 13.

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.
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

182 within 180 nm since 1999 · 2 in the last 12 months · 0 listed in force now

99
00
05
10
15
20
25
26

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 10:24Z; 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.