Underwater operations in progress until further notice by cableship leon thevenin vicinity of trackline…
Bay of Biscay · HYDROLANT 1121/02
What this record establishes
Archived notice · 2002-06-01 15:40Z
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 181/02 171900Z MAY 02. Issued 2002-05-17 19:34Z. 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
- Bay of Biscay. 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
- Cancel HYDROLANT 1121/02 and this msg, operations completedlater cancellation notice
Current notices and reporting history in the Bay of Biscay →
- issued
- 2002-05-17 19:34Z
- status
- Archived notice
- authority
- NAVAREA II 181/02 171900Z MAY 02
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- Bay of Biscay
- position
- 46.658, -5.117
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
UNDERWATER OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY CABLESHIP LEON THEVENIN VICINITY OF TRACKLINE BETWEEN 46-34N 005-22W AND 46-45N 004-52W. WIDE BERTH REQUESTED.
Reading this warning
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- 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.
Collected reports in this area · cable & pipeline work
232 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.
- Exposed submarine cable along trackline joining 47-39.49N 004-39.75W, 47-37.74N 004-42.30W, 47-36.75N…2024-08-30
- Cable operations 130001Z thru 280100Z may by cableship athena along trackline joining 49-09.57N 005-37.48W,…2024-05-09
- Cable operations in progress until 03 jun by cableship detector along trackline joining 48-45.15N…2024-05-03
- Hazardous operations sea trials 301400Z apr to 021600Z may by cableship ile d' ouessant in: a. 47-19.25N…2024-04-29
- Hazardous operations sea trials 020400Z to 021600Z may by cableship ile d'ouessant in 47-19.25N 006-33.27W2024-04-28
- Cable operations in progress until 06 may by cableship detector along trackline joining 48-45.15N…2024-04-09
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
- Special operationsExercises · 110.6 nm
Worldwide in the collected sources
23 cable & pipeline work listed in force · see all
Record snapshot 2026-10-03 06:33Z; 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.