Cable operations in progress until 302300Z sep by cableship ile de brehat in area bound by 34-58.0S…
South Atlantic Ocean · HYDROLANT 2634/17
What this record establishes
Archived notice · 2017-09-30 23:59Z
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 VI 493/17 282013Z AUG 17.. Issued 2017-08-28 22:14Z. 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
- Cable operations in progress until 302300Z sep by cableship ile de brehat in area bound by 34-58.0S…cancelled by this notice
- Cancel HYDROLANT 2634/17 and this msglater cancellation notice
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2017-08-28 22:14Z
- status
- Archived notice
- self-cancels
- 2017-09-30 23:59Z
- authority
- NAVAREA VI 493/17 282013Z AUG 17.
- NAVAREA
- NAVAREA VI · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -34.692, -50.676
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. URUGUAY. BRAZIL-SOUTH COAST. DNC 01, DNC 07. 1. CABLE OPERATIONS IN PROGRESS UNTIL 302300Z SEP BY CABLESHIP ILE DE BREHAT IN AREA BOUND BY 34-58.0S 054-54.0W, 35-02.0S 054-50.4W, 35-09.1S 054-40.6W, 35-27.7S 053-49.0W, 35-36.6S 052-49.8W, 35-37.4S 052-43.7W, 35-40.5S 052-35.9W, 35-48.2S 052-16.9W, 35-52.1S 052-11.4W, 35-59.4S 050-21.9W, 36-03.5S 049-41.7W, 35-30.4S 049-06.0W, 35-08.1S 048-44.7W, 32-47.6S 047-06.0W. ONE MILE BERTH REQUESTED. 2. CANCEL HYDROLANT 2509/17. 3. CANCEL THIS MSG 302359Z SEP 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.
- Cable operations
- A ship is laying, burying or repairing a submarine cable, usually along a stated route.
- 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
497 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 further notice by cableship ile de sein along trackline joining 36-35.59S…2020-09-18
- Cable operations in progress until further notice by cableship ile de sein along trackline joining 35-54.40S…2020-09-02
- 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
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 01:58Z; 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.