Seismic survey by M/V hawk explorer towing 12000 meter long cables: a. 09 mar along trackline joining…
South Atlantic Ocean · HYDROLANT 596/13
What this record establishes
Archived notice · 2013-03-14 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 S 272/13 090239Z MAR 13.. Issued 2013-03-09 12:39Z. 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 the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
Related notices and cancellation links
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2013-03-09 12:39Z
- status
- Archived notice
- authority
- NAVAREA V S 272/13 090239Z MAR 13.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V S
- sea
- South Atlantic Ocean
- position
- -33.758, -50.509
- vessel
- M/V HAWK EXPLORER · 214 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BRAZIL-SOUTH COAST.
1. SEISMIC SURVEY BY M/V HAWK EXPLORER TOWING
12000 METER LONG CABLES:
A. 09 MAR ALONG TRACKLINE JOINING
34-09.11S 049-32.05W, 33-18.51S 050-41.09W,
34-17.23S 049-40.36W, 33-28.49S 050-47.10W.
B. 10 MAR ALONG TRACKLINE JOINING
34-17.23S 049-40.36W, 33-28.49S 050-47.10W,
33-28.58S 050-21.24W, 32-47.07S 051-41.09W.
C. 11 THRU 13 MAR ALONG TRACKLINE BETWEEN
33-28.58S 050-21.24W AND 34-47.07S 051-44.02W.
SIX MILE BERTH REQUESTED.
2. CANCEL HYDROLANT 584/13.
3. CANCEL THIS MSG 14 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.
- 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.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- 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.
- Cancellation reference
- A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
- HYDROLANT
- The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
- 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
466 within 180 nm since 2000 · 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 operations in progress until 302300Z sep by cableship ile de brehat in area bound by 34-58.0S…2017-08-28
- Cable operations in progress until 302300Z sep by cableship ile de brehat in area bound by 34-58.0S…2017-08-16
- Underwater operations in progress until 302359Z aug by cableship ile de brehat in: a. 36-03.5S 049-41.7W b.…2017-08-16
- Cable operations 150500Z aug to 302300Z sep by cableship ile de brehat in area bound by 34-58.0S 054-54.0W,…2017-08-14
- Seismic survey by M/V polarcus alima towing 12 8100 meter long cables along tracklines between: a. 24 jan…2017-01-24
- Seismic survey by M/V polarcus alima towing 12 8100 meter long cables along tracklines between: a. 23 jan…2017-01-23
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
- Odas buoy temporarily established in 32-14.29S 051-58.16WNav aids · 117.2 nm
Worldwide in the collected sources
23 cable & pipeline work listed in force · see all
Record snapshot 2026-09-25 01:59Z; 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.