Cable ops

Cable operations 211800Z to 302200Z apr by cableship rebecca along tracklines joining: a. 37-44.50N…

Ionian Sea · HYDROLANT 856/23

What this record establishes

Archived notice · 2023-04-30 23:00Z

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 III 38/23 202131Z APR 23.. Issued 2023-04-21 03:25Z. 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: Ionian Sea. The map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.

Current notices and reporting history in the Ionian Sea →

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2023-04-21 18:00Z	2023-04-30 22:00Z	—	220 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued: 2023-04-21 03:25Z
status: Archived notice
self-cancels: 2023-04-30 23:00Z
authority: NAVAREA III 38/23 202131Z APR 23.
NAVAREA: NAVAREA III · named as the source of this relay
sea: Ionian Sea
position: 36.604, 17.032
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN MEDITERRANEAN SEA.
IONIAN SEA.
SICILY.
DNC 09.
1. CABLE OPERATIONS 211800Z TO 302200Z APR
   BY CABLESHIP REBECCA ALONG TRACKLINES JOINING:
   A. 37-44.50N 015-36.60E, 37-37.20N 015-41.90E.
   B. 37-00.80N 016-22.20E, 36-45.30N 016-53.20E.
   C. 36-21.50N 017-17.70E, 35-59.00N 017-56.60E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 302300Z APR 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.
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.
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

80 within 180 nm since 1998 · 2 in the last 12 months · 1 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

Submarine cable and rov works days 280000 UTC sep 26 to 071000 UTC oct 26 at points: 36-12.78N 015-52.58E…Cable ops · 62.4 nm

Worldwide in the collected sources

24 cable & pipeline work listed in force · see all

Record snapshot 2026-10-01 10:54Z; 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.