Seismic survey 14 thru 21 jan by bgp challenger towing 12000 meter long cable in area bound by 13-49S…
Western South Atlantic · Brazil-south Coast · HYDROLANT 106/17
What this record establishes
Archived notice · 2017-01-18 23:22Z
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 COASTAL 36/17 102052Z JAN 17.. Issued 2017-01-10 21:42Z. 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
- Western South Atlantic · Brazil-south Coast. 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
- issued
- 2017-01-10 21:42Z
- status
- Archived notice
- authority
- NAVAREA V COASTAL 36/17 102052Z JAN 17.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V COASTAL
- position
- -7.990, -35.511
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-SOUTH COAST. DNC 01. 1. SEISMIC SURVEY 14 THRU 21 JAN BY BGP CHALLENGER TOWING 12000 METER LONG CABLE IN AREA BOUND BY 13-49S 036-26W, 10-47S 035-11W, 07-47S 034-02W, 04-57S 034-19W, 04-39S 034-21W, 04-36S 034-20W, 04-25S 036-36W, 04-40S 036-33W. 2. CANCEL HYDROLANT 62/17. 3. CANCEL THIS MSG 22 JAN 17.
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
107 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.
- Seismic survey 21 thru 28 jan by M/V bgp challenger towing 12000 meter long cable in area bound by 13-49S…2017-01-19
- Cable laying operations in progress until 22 apr by M/V ile de batz along trackline joining 03-44.95S…2013-04-11
- Cable laying operations 09 thru 22 apr by M/V ile de batz along trackline between 03-44.95S 038-26.81W and…2013-04-08
- Seismic survey in progress until 28 feb by M/V veritas vantage towing 5.4 mile long cable in area bound by…2010-02-23
- Seismic survey in progress until 26 feb by M/V veritas vantage towing 5.4 mile long cable in area bound by…2010-02-19
- Seismic survey in progress until 19 feb by M/V veritas vantage towing 5.4 mile long cable in area bound by…2010-02-14
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
- Tamandare light 08-45.57S 035-06.08W unlit until 02 novNav aids · 52.3 nm
- Maceio light 09-41.03S 035-43.38W unlit until 31 octNav aids · 102.5 nm
Worldwide in the collected sources
23 cable & pipeline work listed in force · see all
Record snapshot 2026-09-25 01:53Z; 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.