Cable ops

Cable operations 041400Z thru 160001Z sep by cableship ile d'ouessant in area bound by 53-48.60N 004-17.40W,…

Irish Sea and St. George's Channel · HYDROLANT 1976/23

What this record establishes

Archived notice · 2023-09-16 01:00Z

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) · ILE D OUESSANT 0/23 030749Z SEP 23.. Issued 2023-09-03 08:34Z. 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: Irish Sea and St. George's Channel. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Current notices and reporting history in the Irish Sea and St. George's Channel →

issued: 2023-09-03 08:34Z
status: Archived notice
self-cancels: 2023-09-16 01:00Z
authority: ILE D OUESSANT 0/23 030749Z SEP 23.
issued by: ILE D OUESSANT
sea: Irish Sea and St. George's Channel
position: 53.794, -4.368
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

IRISH SEA.
ISLE OF MAN.
DNC 20.
1. CABLE OPERATIONS 041400Z THRU 160001Z SEP BY
   CABLESHIP ILE D'OUESSANT IN AREA BOUND BY
   53-48.60N 004-17.40W, 53-49.40N 004-26.10W,
   53-46.80N 004-26.90W, 53-45.90N 004-17.90W.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 160100Z SEP 23.

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.
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.
Area bound by: Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
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.

All warning terms →

Collected reports in this area · cable & pipeline work

402 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.

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 09:40Z; 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.