Cable operations 241000Z to 311000Z mar by cableship chamarel with submersible along trackline between…
Gulf of Guinea · HYDROLANT 637/12
What this record establishes
Archived notice · 2012-03-31 11:00Z
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 93/12 220938Z MAR 12.. Issued 2012-03-22 09:57Z. 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
- Gulf of Guinea. 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
- Man overboard in 08-00.67S 034-35.00W at 292253Z marlater cancellation notice
Current notices and reporting history in the Gulf of Guinea →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2012-03-24 10:00Z | 2012-03-31 10:00Z | — | 168 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2012-03-22 09:57Z
- status
- Archived notice
- self-cancels
- 2012-03-31 11:00Z
- authority
- NAVAREA II 93/12 220938Z MAR 12.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- Gulf of Guinea
- position
- 6.374, 3.440
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
GULF OF GUINEA. NIGERIA. 1. CABLE OPERATIONS 241000Z TO 311000Z MAR BY CABLESHIP CHAMAREL WITH SUBMERSIBLE ALONG TRACKLINE BETWEEN 06-22.50N 003-26.37E AND 06-22.39N 003-26.40E. WIDE BERTH REQUESTED. 2. CANCEL THIS MSG 311100Z MAR.
Reading this warning
- 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
42 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 until 02 may by cableship ile de sein along trackline joining 04-49.10N 002-51.80E,…2024-04-26
- Cable operations in progress until 02 may by cableship ile de sein along trackline joining 04-49.10N…2024-04-26
- Cable operations in progress until 22 apr by cableship ile de sein along trackline joining 02-12.61N…2024-04-17
- Cable operations in progress until further notice by cableship ile de sein along trackline joining 06-24.00N…2024-03-22
- Cable operations 19 thru 25 mar by cableship ile de brehat along trackline joining 06-10.1N 001-21.6E,…2022-03-18
- Cable operations in progress until further notice by cableship leon thevenin along trackline joining…2021-02-26
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 2026-10-01 23:55Z; 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.