Cable repair operations 231100Z to 291100Z may by cableship chamarel with submersible within one mile of…
Gulf of Guinea · HYDROLANT 864/11
What this record establishes
Archived notice · 2011-05-29 12:00Z
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 155/11 221705Z MAY 11.. Issued 2011-05-22 20:08Z. 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 parsed report position is 3.770, 8.748 with a 1.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Current notices and reporting history in the Gulf of Guinea →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2011-05-23 11:00Z | 2011-05-29 11:00Z | — | 144 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2011-05-22 20:08Z
- status
- Archived notice
- self-cancels
- 2011-05-29 12:00Z
- authority
- NAVAREA II 155/11 221705Z MAY 11.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- Gulf of Guinea
- position
- 3.770, 8.748 · r 1.0 nm
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
GULF OF GUINEA. 1. CABLE REPAIR OPERATIONS 231100Z TO 291100Z MAY BY CABLESHIP CHAMAREL WITH SUBMERSIBLE WITHIN ONE MILE OF 03-46.2N 008-44.9E. ONE MILE BERTH REQUESTED. 2. CANCEL THIS MSG 291200Z MAY.
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.
- 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.
- 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
46 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 03-00.70N…2024-05-04
- Cable operations 06 apr until further notice by cableship ile de sein along trackline joining 03-14.80N…2024-04-05
- Seismic survey in progress until 01 dec by M/V polar marquis towing 12 8100 meter long cables2018-10-23
- Seismic survey 090001Z jan to 282359Z feb by M/V hugin explorer and M/V ocean europe in area bound by…2017-01-05
- Seismic survey 200001Z sep until further notice by M/V polarcus alima towing 12 8100 meter long cables in…2015-09-19
- Seismic survey 200001Z sep until further notice by M/V polarcus alima towing 12 8100 meter long cables in…2015-09-18
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
- Aids to navigationNav aids · 58.9 nm
- Newly discovered dangersWrecks · 107.5 nm
- Dangerous wreck in 04-18.50N 007-02.20EWrecks · 107.5 nm
Worldwide in the collected sources
24 cable & pipeline work listed in force · see all
Record snapshot 2026-10-01 15:13Z; 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.