Cable operations in progress until 14 apr by M/V rebecca along trackline joining 38-56.44N 010-50.23E,…
Tyrrhenian Sea · HYDROLANT 931/21
What this record establishes
Archived notice · 2021-04-11 12:25Z
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 III 345/21 060000Z APR 21.. Issued 2021-04-05 17:22Z. 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
- Tyrrhenian Sea. 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
Current notices and reporting history in the Tyrrhenian Sea →
- issued
- 2021-04-05 17:22Z
- status
- Archived notice
- authority
- NAVAREA III 345/21 060000Z APR 21.
- NAVAREA
- NAVAREA III · named as the source of this relay
- sea
- Tyrrhenian Sea
- position
- 38.806, 11.844
- vessel
- M/V REBECCA · 100 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
TYRRHENIAN SEA. SICILY. DNC 08, DNC 09. 1. CABLE OPERATIONS IN PROGRESS UNTIL 14 APR BY M/V REBECCA ALONG TRACKLINE JOINING 38-56.44N 010-50.23E, 38-51.85N 012-03.70E, 38-47.15N 012-14.71E, 38-26.43N 012-46.61E. WIDE BERTH REQUESTED. 2. CANCEL HYDROLANT 881/21. 3. CANCEL THIS MSG 15 APR 21.
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.
- 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.
- 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
195 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 28 aug thru 10 sep by cableship cable vigilance in area within one mile of 37-47.30N…2023-08-27
- Pipeline operations in progress until 13 feb 22 by M/V ievoli ivori in area bound by 37-01.0N 011-04.2E,…2021-10-30
- Underwater operations in progress until 152359Z sep by cableship raymond croze in area bound by 38-11.80N…2021-09-05
- Underwater operations 011400Z sep until further notice by cableship raymond croze in area bound by 38-11.80N…2021-08-30
- Cable operations in progress until 02 may by cableship pierre de fermat: a. along trackline joining…2021-03-31
- Cable operations in progress until 07 apr by M/V rebecca along trackline joining 38-38.68N 007-56.88E,…2021-03-31
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 13:26Z; 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.