Cable ops

Seismic survey in progress until 31 jan by M/V teknik perdana towing 5.4 mile long cables in area bound by…

South Atlantic Ocean · HYDROLANT 95/13

What this record establishes

Archived notice · 2013-02-01 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 N 48/13 110025Z JAN 13.. Issued 2013-01-11 00:59Z. 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.

Current notices and reporting history in the South Atlantic Ocean →

issued: 2013-01-11 00:59Z
status: Archived notice
authority: NAVAREA V N 48/13 110025Z JAN 13.
NAVAREA: NAVAREA V · named as the source of this relay
issued by: NAVAREA V N
sea: South Atlantic Ocean
position: -0.341, -43.822
vessel: M/V TEKNIK PERDANA · 22 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 31 JAN BY
   M/V TEKNIK PERDANA TOWING 5.4 MILE LONG CABLES
   IN AREA BOUND BY
   01-40.00N 045-40.40W, 00-52.03N 046-11.03W,
   01-10.59S 043-40.93W, 02-15.67S 041-26.22W,
   01-25.18S 041-26.22W, 00-24.30S 043-02.47W.
   SEVEN MILE BERTH REQUESTED.
2. CANCEL THIS MSG 01 FEB 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

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

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

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

Depths less than charted in areas bound by: a. 02-10.17S 044-09.21W, 02-10.31S 044-09.39W, 02-10.35S…Wrecks · 111.6 nm

Worldwide in the collected sources

24 cable & pipeline work listed in force · see all

Record snapshot 2026-10-02 10:19Z; 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.