Cable ops

Cable operations by cableship kddi ocean link: a. 03 thru 08 dec, alternate 09 thru 11 dec in area bound by…

Eastern China Sea · HYDROPAC 3769/23

What this record establishes

Archived notice · 2023-12-14 13:40Z

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 421/23 281141Z NOV 23.. Issued 2023-11-28 11:55Z. 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 an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Eastern China Sea →

issued
2023-11-28 11:55Z
status
Archived notice
self-cancels
2023-12-18 00:01Z
authority
NAVAREA XI 421/23 281141Z NOV 23.
NAVAREA
NAVAREA XI · named as the source of this relay
sea
Eastern China Sea
position
25.660, 121.657
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 BY CABLESHIP KDDI OCEAN LINK:
   A. 03 THRU 08 DEC, ALTERNATE 09 THRU 11 DEC
      IN AREA BOUND BY
      25-20.38N 121-23.69E, 25-30.46N 121-23.47E,
      25-33.31N 121-24.95E, 25-36.23N 121-31.15E,
      25-41.15N 121-39.34E, 25-38.54N 121-41.59E,
      25-33.89N 121-33.73E, 25-30.65N 121-27.03E,
      25-20.23N 121-27.42E.
   B. 08 THRU 15 DEC, ALTERNATE 15 THRU 17 DEC
      IN AREA BOUND BY
      25-38.21N 121-32.83E, 25-40.56N 121-31.38E,
      25-48.30N 121-46.39E, 25-54.98N 122-04.02E,
      25-52.31N 122-05.54E, 25-48.52N 121-54.56E.
   WIDE BERTH REQUESTED.
2. CANCEL THIS MSG 180001Z DEC 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.
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.
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.

All warning terms →

Collected reports in this area · cable & pipeline work

147 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
00
05
10
15
20
24

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

J
F
M
A
M
J
J
A
S
O
N
D

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 06:26Z; 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.