Cable ops

Cable operations 171600Z to 241600Z dec by cableship lodbrog in vicinity of trackline joining 25-33.8N…

Eastern China Sea · HYDROPAC 4483/18

What this record establishes

Archived notice · 2018-12-24 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 XI 651/18 161154Z DEC 18.. Issued 2018-12-16 15:33Z. 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: Eastern China 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 Eastern China Sea →

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2018-12-17 16:00Z	2018-12-24 16:00Z	—	168 h

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

issued: 2018-12-16 15:33Z
status: Archived notice
self-cancels: 2018-12-24 17:00Z
authority: NAVAREA XI 651/18 161154Z DEC 18.
NAVAREA: NAVAREA XI · named as the source of this relay
sea: Eastern China Sea
position: 25.559, 121.380
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EAST CHINA SEA.
TAIWAN.
DNC 23.
1. CABLE OPERATIONS 171600Z TO 241600Z DEC BY
   CABLESHIP LODBROG IN VICINITY OF TRACKLINE JOINING
   25-33.8N 121-22.2E, 25-33.7N 121-22.5E,
   25-33.7N 121-23.0E, 25-33.8N 121-23.2E,
   25-33.5N 121-23.4E, 25-33.4N 121-23.1E,
   25-33.4N 121-22.4E, 25-33.5N 121-22.1E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 241700Z DEC 18.

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

151 within 180 nm since 1999 · 2 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 2026-10-02 01:16Z; 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.