Seismic survey in progress until 180159Z nov by M/V discoverer in area bound by 26-23S 044-08W, 26-23S…
South Atlantic Ocean · HYDROLANT 1985/08
What this record establishes
Archived notice · 2008-11-18 02:59Z
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 823/08 172324Z NOV 08.. Issued 2008-11-17 23:40Z. 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
- 2008-11-17 23:40Z
- status
- Archived notice
- self-cancels
- 2008-11-18 02:59Z
- authority
- NAVAREA V S 823/08 172324Z NOV 08.
- NAVAREA
- NAVAREA V · named as the source of this relay
- issued by
- NAVAREA V S
- sea
- South Atlantic Ocean
- position
- -29.533, -47.050
- 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
1. SEISMIC SURVEY IN PROGRESS UNTIL 180159Z NOV BY M/V DISCOVERER IN AREA BOUND BY 26-23S 044-08W, 26-23S 044-00W, 32-41S 050-06W, 32-41S 049-58W. FIVE MILE BERTH REQUESTED. 2. CANCEL HYDROLANT 1941/08(36), SURVEY SUSPENDED. 3. CANCEL THIS MSG 180259Z NOV.
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.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- 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.
- 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
137 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 by cableship rebecca: a. 191000Z to 252359Z jan along trackline joining 14-49.32S…2024-01-15
- Cable operations in progress until 241100Z feb 21 by cableship peter faber and cableship recorder in: a.…2020-11-26
- Cable operations in progress until 251100Z nov by cableship peter faber and cableship recorder in: a.…2020-09-30
- Underwater operations 15 aug thru 21 sep by cableship peter faber and cableship recorder in: a. 35-38.11S…2020-08-14
- Underwater operations in progress until 20 sep by cableship peter faber and cableship recorder in: a.…2020-08-05
- Underwater operations 040001Z to 152359Z aug by cableship ile de brehat in area bound by 28-14.00S…2017-08-03
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 2026-10-03 19:50Z; 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.