Cable operations 220001Z to 272359Z sep by cableship ile de sein in vicinity of trackline joining 00-18.3N…
South Atlantic Ocean · HYDROLANT 2978/18
What this record establishes
Archived notice · 2018-09-28 00:59Z
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 II 372/18 201613Z SEP 18.. Issued 2018-09-20 16:39Z. 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.
Current notices and reporting history in the South Atlantic Ocean →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2018-09-22 00:01Z | 2018-09-27 23:59Z | — | 143 h 58 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2018-09-20 16:39Z
- status
- Archived notice
- self-cancels
- 2018-09-28 00:59Z
- authority
- NAVAREA II 372/18 201613Z SEP 18.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- South Atlantic Ocean
- position
- -0.560, 6.358
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN ATLANTIC. GULF OF GUINEA. SAO TOME AND PRINCIPE. DNC 01. 1. CABLE OPERATIONS 220001Z TO 272359Z SEP BY CABLESHIP ILE DE SEIN IN VICINITY OF TRACKLINE JOINING 00-18.3N 006-45.7E, 00-12.4N 006-52.4E, 00-02.4N 006-54.3E, 01-24.4S 005-38.8E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 280059Z SEP 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.
- 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.
- 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.
- 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
30 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 in progress until further notice by cableship ile de sein along trackline joining 01-28.20N…2024-02-28
- Cable operations in progress until further notice by cableship ile de sein along trackline joining 00-24.40N…2024-02-20
- Cable operations in progress until further notice by cableship ile de sein along trackline joining 00-28.70N…2024-02-11
- Seismic survey in progress until 010001Z jul by M/V bgp prospector towing ten six mile long cables in area…2023-03-09
- Cable operations 120001Z dec until further notice by M/V polarcus adira towing 12 six mile long cables in…2019-12-09
- Seismic survey in progress until 312359Z may by M/V bgp prospector towing 12 8000 meter long cables in area…2015-04-13
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 2026-09-24 23:32Z; 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.