Incidents · distress

Distress signal received on 406 mhz in 25-17-56N 119-45-53E at 090941Z sep

South China Sea · HYDROPAC 3298/18

What this record establishes

Archived notice · 2018-09-28 11:51Z

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) · JAPAN COAST GUARD 091000Z SEP 18.. Issued 2018-09-09 10:31Z. 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: South China Sea. The parsed report position is 25.299, 119.765. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Original warning text

TAIWAN STRAIT.
CHINA.
DNC 23.
1. DISTRESS SIGNAL RECEIVED ON 406 MHZ
   IN 25-17-56N 119-45-53E AT 090941Z SEP.
   VESSELS IN VICINITY REQUESTED TO KEEP A SHARP
   LOOKOUT, ASSIST IF POSSIBLE.
   REPORTS TO JAPAN COAST GUARD,
   PHONE: 814 5663 4999, 812 2365 6957, 815 2651 4999,
   819 9255 4999.
2. CANCEL HYDROPAC 3297/18(94,97).

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.
Distress signal received: A rescue centre has received an alert — from a beacon, a radio call or a satellite terminal — and is asking ships to look.
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.
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.
Keep a sharp lookout: A request to every ship in the area to watch for the vessel, people or object described.
Assist if possible: The second half of the standard rescue request: ships able to help are asked to do so.
Cancellation reference: A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROPAC: The U.S. long-range warning series for the Pacific outside NAVAREA XII and for the Indian Ocean, Persian Gulf and adjoining seas.

All warning terms →

Collected reports in this area · distress & casualty cases (archived)

47 within 180 nm since 1996 · 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.

Distress signal received on 406 mhz from M/V si hang yun 2 in 24-46.50N 119-32.50E at 180115Z nov2023-11-18
F/V nam sung unreported2021-03-24
Distress signal received in vicinity 25-58N 121-49E at 240223Z aug2020-08-24
Distress signal received on 406 mhz in 24-13.9N 119-18.6E2019-12-12
Distress signal received in 25-59N 121-49E at 010759Z oct2019-10-01
Distress signal received from vessel in 22-54N 119-03E at 300737Z2019-09-30

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

0 distress & casualty cases (archived) listed in force · see all

Record snapshot 2026-10-02 02:53Z; source collection times vary.

Incidents

Search-and-rescue broadcasts, published only once a case has been closed for 30 days: groundings, sinkings, capsizes, fires, man overboard, overdue vessels. Nothing here is live. All current distress & casualty cases (archived) →

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.