Other

20 meter tug biwan, blue hull, unreported

South China Sea · HYDROPAC 3600/21

What this record establishes

Archived notice · 2021-12-31 13:23Z

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) · RCC BASARNAS 130252Z DEC 21.. Issued 2021-12-13 04:17Z. 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 -1.452, 107.640. 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 South China Sea →

issued: 2021-12-13 04:17Z
status: Archived notice
authority: RCC BASARNAS 130252Z DEC 21.
issued by: RCC BASARNAS
sea: South China Sea
position: -1.452, 107.640
vessel: TUG BIWAN
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

SOUTH CHINA SEA.
INDONESIA.
DNC 04.
20 METER TUG BIWAN, BLUE HULL, UNREPORTED.
LAST KNOWN POSITION IN 01-27.1S 107-38.4E
ON 03 DEC. VESSELS IN VICINITY REQUESTED
TO KEEP A SHARP LOOKOUT, ASSIST IF POSSIBLE.
REPORTS TO RCC BASARNAS,
PHONE: 6221 6586 7510, FAX: 6221 6586 7512,
E-MAIL: KAGAHAR@BASARNAS.GO.ID,
SAR_SEMARANG@YAHOO.CO.ID,
RCC.INDONESIA@BASARNAS.GO.ID,
KAGAHAR@YAHOO.COM, KAGAHAR@GMAIL.COM.

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.
Tow / towing: A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
Last known position: The most recent confirmed position of a missing vessel or person — the starting point of a search.
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.
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.
RCC / JRCC (Rescue Coordination Centre): The centre that organises search and rescue in its region; warnings ask ships to send their reports there.

All warning terms →

Collected reports in this area · other warnings

6 within 180 nm since 2011 · 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

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

23 other warnings listed in force · see all

Record snapshot 2026-09-29 21:56Z; source collection times vary.

Other

Everything the classifier did not place elsewhere. All current other warnings →

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.