Cable ops

Cable operations in progress until 31 dec in area bound by 49-06.08N 140-17.80E, 48-51.58N 141-20.40E,…

Japan Sea · HYDROPAC 3201/23

What this record establishes

Archived notice · 2024-01-01 00:01Z

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 XIII 123/23 070907Z OCT 23.. Issued 2023-10-07 09:22Z. 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: Japan 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.

Current notices and reporting history in the Japan Sea →

issued: 2023-10-07 09:22Z
status: Archived notice
self-cancels: 2024-01-01 00:01Z
authority: NAVAREA XIII 123/23 070907Z OCT 23.
NAVAREA: NAVAREA XIII · named as the source of this relay
sea: Japan Sea
position: 47.239, 141.833
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

SEA OF JAPAN.
SEA OF OKHOTSK.
TATAR STRAIT.
SAKHALIN.
DNC 24.
1. CABLE OPERATIONS IN PROGRESS UNTIL 31 DEC
   IN AREA BOUND BY
   49-06.08N 140-17.80E, 48-51.58N 141-20.40E,
   48-15.38N 142-01.84E, 45-55.75N 141-57.20E,
   45-54.22N 142-04.45E, 46-03.00N 142-19.63E,
   46-25.27N 143-02.44E, 46-35.81N 143-05.55E,
   46-35.70N 143-06.34E, 46-24.64N 143-04.58E,
   45-51.15N 142-05.57E, 45-56.18N 141-50.63E,
   46-39.97N 141-38.60E, 48-19.67N 141-51.65E,
   48-49.30N 141-17.89E, 49-03.07N 140-18.52E.
   ONE MILE BERTH REQUESTED.
2. CANCEL THIS MSG 010001Z JAN 24.

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

15 within 180 nm since 2005 · 1 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 05:37Z; 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.