Underwater operations in progress until 29 may by cableship ile de brehat in vicinity of trackline joining…
South Atlantic Ocean · HYDROLANT 337/18
What this record establishes
Archived notice · 2018-04-16 15:37Z
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 24/18 301547Z JAN 18.. Issued 2018-01-30 16:00Z. 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
- Underwater operations in progress until 29 may by cableship ile de brehat in vicinity of trackline joining…cancelled by this notice
- Cancel HYDROLANT 337/18 and this msglater cancellation notice
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2018-01-30 16:00Z
- status
- Archived notice
- authority
- NAVAREA V 24/18 301547Z JAN 18.
- NAVAREA
- NAVAREA V · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -14.972, -34.700
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
WESTERN SOUTH ATLANTIC. BRAZIL-NORTHEAST COAST. DNC 01. 1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 29 MAY BY CABLESHIP ILE DE BREHAT IN VICINITY OF TRACKLINE JOINING 23-02.07S 043-29.46W, 24-31.67S 038-36.50W, 17-54.63S 031-35.33W, 09-02.24S 031-37.72W, 03-44.17S 034-45.35W, 01-35.09S 034-45.35W, 00-52.20S 035-19.93W. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 333/18. 3. CANCEL THIS MSG 30 MAY 18.
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.
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- Cable operations
- A ship is laying, burying or repairing a submarine cable, usually along a stated route.
- 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
53 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.
- Underwater operations in progress until 29 may by cableship ile de brehat in vicinity of trackline joining…2018-01-30
- Underwater operations in progress until 29 may by cableship ile de brehat in vicinity of trackline joining…2018-01-29
- Seismic survey 04 apr thru 25 may by M/V l'atalante towing 4850 meter long cable in area bound by 09-06.00S…2014-04-10
- Seismic survey in progress until 10 aug by M/V ocean endeavour towing 12 five mile long cables in area bound…2014-02-25
- Cable laying operations 14 thru 24 feb by cableship ile de batz along trackline between 13-00.81S 038-27.13W…2013-02-13
- Seismic survey in progress until 24 oct by M/V harrier explorer towing 6.5 mile long cables in area bound by…2012-10-22
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 03:25Z; 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.