Seismic survey in progress until 26 feb by M/V ramform atlas towing 14 9000 meter long cables in area bound…
South Atlantic Ocean · HYDROLANT 125/16
What this record establishes
Archived notice · 2016-02-27 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 64/16 150014Z JAN 16.. Issued 2016-01-15 00:26Z. 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
- 2016-01-15 00:26Z
- status
- Archived notice
- authority
- NAVAREA V N 64/16 150014Z JAN 16.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V N
- sea
- South Atlantic Ocean
- position
- -3.464, -37.767
- 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 26 FEB BY M/V RAMFORM ATLAS TOWING 14 9000 METER LONG CABLES IN AREA BOUND BY 02-52.56S 038-04.41W, 03-17.33S 037-40.17W, 03-22.79S 037-38.82W, 03-28.42S 037-34.77W, 03-38.20S 037-25.25W, 03-41.73S 037-16.17W, 03-48.19S 037-08.89W, 04-02.82S 037-24.33W, 03-53.58S 037-33.73W, 03-24.05S 038-06.73W, 03-22.42S 038-07.46W, 03-21.41S 038-08.23W, 03-18.96S 038-09.37W, 03-17.16S 038-11.06W, 03-10.10S 038-19.91W. 2. CANCEL HYDROLANT 2526/15. 3. CANCEL THIS MSG 27 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.
- 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
358 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 operations in progress until 130259Z feb 21 by cableship ile de brehat and cableship peter faber along…2020-12-30
- Cable operations 300300Z nov to 130259Z feb 21 by cableship ile de brehat along trackline joining 03-44.36S…2020-11-29
- Seismic survey in progress until 10 feb 16 by M/V ramform atlas towing 14 9000 meter long cables in area…2015-10-10
- Seismic survey in progress until 10 feb 16 by M/V ramform atlas towing 14 1400 meter long cables in area…2015-09-16
- Seismic survey in progress until 10 feb 16 by M/V ramform atlas towing 14 9000 meter long cables in area…2015-09-10
- Pipeline operations in progress until 15 may by M/V oceanica sub II and M/V ankh along trackline joining…2015-04-15
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
24 cable & pipeline work listed in force · see all
Record snapshot 2026-10-02 04:31Z; 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.