Cable operations in progress until 30 dec by cableship rene descartes with submersible in area within two…
South Atlantic Ocean · HYDROLANT 4107/17
What this record establishes
Archived notice · 2017-12-27 09:52Z
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 VII 355/17 181646Z DEC 17.. Issued 2017-12-18 17:01Z. 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 parsed report position is -9.700, 12.458 with a 2.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cable operations 06 nov until further notice by cableship rene descartes with submersible along trackline…cancelled by this notice
- Cancel HYDROLANT 4107/17 and this msglater cancellation notice
Current notices and reporting history in the South Atlantic Ocean →
- issued
- 2017-12-18 17:01Z
- status
- Archived notice
- authority
- NAVAREA VII 355/17 181646Z DEC 17.
- NAVAREA
- NAVAREA VII · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -9.700, 12.458 · r 2.0 nm
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN SOUTH ATLANTIC. ANGOLA. DNC 01. 1. CABLE OPERATIONS IN PROGRESS UNTIL 30 DEC BY CABLESHIP RENE DESCARTES WITH SUBMERSIBLE IN AREA WITHIN TWO MILES OF 09-42.0S 012-27.5E. TWO MILE BERTH REQUESTED. 2. CANCEL HYDROLANT 3566/17. 3. CANCEL THIS MSG 31 DEC 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.
- Within a radius of
- A circular area — every position within a stated distance of a point.
- 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
41 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.
- Survey operations 211200Z to 251200Z may by cableship leon thevnin in areas within one mile of: a. 09-34.4S…2018-05-18
- Cable operations 06 nov until further notice by cableship rene descartes with submersible along trackline…2017-11-03
- Seismic survey in progress until further notice by M/V ramform atlas towing 5000 meter long cable in area…2017-08-28
- Seismic survey 01 jul until further notice by M/V ramform atlas towing 5000 meter long cable in area bound…2017-06-30
- Pipeline operations in progress until further notice in area within eight miles of 07-27.65S 011-34.25E2017-03-16
- Seismic survey in progress until 16 jun by M/V endeavor towing 5.5 mile long cable in area bound by…2015-05-04
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 00:59Z; 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.