Cable ops

Cable operations 042200Z apr to 041200Z may by cableship rene descartes vicinity of trackline joining…

Eastern China Sea · HYDROPAC 975/16

What this record establishes

Archived notice · 2016-04-19 12:15Z

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 214/16 022326Z APR 16.. Issued 2016-04-02 23:26Z. 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.

Related notices and cancellation links

Current notices and reporting history in the Eastern China Sea →

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
2016-04-04 22:00Z2016-05-04 12:00Z—710 h

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

issued
2016-04-02 23:26Z
status
Archived notice
self-cancels
2016-05-04 13:00Z
authority
NAVAREA XI 214/16 022326Z APR 16.
NAVAREA
NAVAREA XI · named as the source of this relay
sea
Eastern China Sea
position
25.352, 121.805
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EAST CHINA SEA.
TAIWAN-NORTH COAST.
DNC 23.
1. CABLE OPERATIONS 042200Z APR TO 041200Z MAY
   BY CABLESHIP RENE DESCARTES
   VICINITY OF TRACKLINE JOINING
   25-11.9N 121-24.6E, 25-13.7N 121-24.0E,
   25-20.0N 121-25.8E, 25-27.4N 121-25.8E,
   25-29.6N 121-32.0E, 25-14.1N 122-15.1E,
   25-13.8N 122-23.3E.
2. CANCEL THIS MSG 041300Z MAY 16.

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.
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

174 within 180 nm since 1999 · 2 in the last 12 months · 0 listed in force now

99
00
05
10
15
20
25
26

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

Worldwide in the collected sources

23 cable & pipeline work listed in force · see all

Record snapshot 2026-10-02 22:33Z; 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.