Hazardous operations sea trials 301400Z apr to 021600Z may by cableship ile d' ouessant in: a. 47-19.25N…
Celtic Sea · HYDROLANT 908/24
What this record establishes
Archived notice · 2024-05-02 17:00Z
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 122/24 290812Z APR 24.. Issued 2024-04-29 08:33Z. 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
- Celtic Sea. The parsed report position is 47.754, -5.502. 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
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2024-04-30 14:00Z | 2024-05-02 16:00Z | — | 50 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2024-04-29 08:33Z
- status
- Archived notice
- self-cancels
- 2024-05-02 17:00Z
- authority
- NAVAREA II 122/24 290812Z APR 24.
- NAVAREA
- NAVAREA II · named as the source of this relay
- sea
- Celtic Sea
- position
- 47.754, -5.502
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BAY OF BISCAY. CELTIC SEA. FRANCE. DNC 08, DNC 20. 1. HAZARDOUS OPERATIONS SEA TRIALS 301400Z APR TO 021600Z MAY BY CABLESHIP ILE D' OUESSANT IN: A. 47-19.25N 006-33.27W. B. 48-11.27N 004-27.00W. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 907/24. 3. CANCEL THIS MSG 021700Z MAY 24.
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.
- Hazardous operations
- NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
- 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.
- Cable operations
- A ship is laying, burying or repairing a submarine cable, usually along a stated route.
- 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
466 within 180 nm since 1998 · 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 in progress until further notice by cableship ile d'ouessant in vicinity of trackline…2024-08-25
- 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
- Cable operations in progress until further notice by cableship detector along trackline joining 51-18.40N…2024-05-01
- Cable operations in progress until further notice by cableship detector along trackline joining 51-18.40N…2024-05-01
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 11:49Z; 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.