Seismic survey by M/V discoverer towing 5.4 mile long cables: a. in progess in area bound by 13-31S 036-48W,…
South Atlantic Ocean · HYDROLANT 400/12
What this record establishes
Archived notice · 2012-02-26 00:00Z
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 E 233/12 21 FEB 12.. Issued 2012-02-21 01:47Z. 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
- 2012-02-21 01:47Z
- status
- Archived notice
- authority
- NAVAREA V E 233/12 21 FEB 12.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V E
- sea
- South Atlantic Ocean
- position
- -13.637, -37.484
- vessel
- M/V DISCOVERER · 228 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-EAST COAST.
1. SEISMIC SURVEY BY M/V DISCOVERER TOWING
5.4 MILE LONG CABLES:
A. IN PROGESS IN AREA BOUND BY
13-31S 036-48W, 13-40S 036-48W,
13-44S 038-51W, 13-31S 036-51W.
B. 22 THRU 24 FEB IN AREA BETWEEN
13-35S 15-54S AND 037-23W 037-58W.
C. 25 FEB IN AREA BETWEEN
16-06S 13-06S AND 038-36W 038-13W.
SEVEN MILE BERTH REQUESTED.
2. CANCEL THIS MSG 26 FEB.
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.
Collected reports in this area · cable & pipeline work
360 within 180 nm since 1999 · 0 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.
- Cable repair operations 23 feb thru 25 mar by M/V teneo vicinity of trackline joining 13-00.42S 038-27.59W,…2015-02-23
- Seismic survey in progress until 30 oct by M/V ramform viking towing 12 9500 meter long cables in area bound…2014-09-24
- Seismic survey in progress until 30 oct by M/V ramform viking towing 12 9500 meter long cables in area bound…2014-09-18
- Seismic survey in progress until 30 oct by M/V ramform viking towing 12 9500 meter long cables in area bound…2014-09-17
- Seismic survey 04 apr thru 25 may by M/V l'atalante towing 4850 meter long cable in area bound by 09-06.00S…2014-04-10
- Seismic survey in progress until 10 aug by M/V ocean endeavour towing 12 five mile long cables in area bound…2014-02-25
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
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 01:00Z; 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.