Debris

Buoy reported adrift in vicinity 31-00.00N 124-00.00E

Eastern China Sea · HYDROPAC 2457/23

What this record establishes

Archived notice · 2023-07-31 09:00Z

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 252/23 280851Z JUL 23.. Issued 2023-07-28 09:03Z. 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 parsed report position is 31.000, 124.000. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Current notices and reporting history in the Eastern China Sea →

issued: 2023-07-28 09:03Z
status: Archived notice
self-cancels: 2023-07-31 09:00Z
authority: NAVAREA XI 252/23 280851Z JUL 23.
NAVAREA: NAVAREA XI · named as the source of this relay
sea: Eastern China Sea
position: 31.000, 124.000
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EAST CHINA SEA.
CHINA.
DNC 23.
1. BUOY REPORTED ADRIFT IN VICINITY
   31-00.00N 124-00.00E.
2. CANCEL THIS MSG 310900Z JUL 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.
Off station / missing buoy: A buoy that is not in its charted position — dragged, damaged, missing or removed.
Adrift: Loose and moving with wind and current — a vessel, container, buoy, log or anything else no longer secured.
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.
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 · drifting objects

3 within 180 nm since 2002 · 0 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

Large buoy reported to exist in 31-00N 124-00EWrecks · 0 nm

Worldwide in the collected sources

2 drifting objects listed in force · see all

Record snapshot 2026-10-02 16:39Z; source collection times vary.

Debris

Logs, buoys, mooring gear and other objects adrift. All current drifting objects →

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.