Surveys

Dangerous wreck in 01-25.92N 104-27.39E

South China Sea · HYDROPAC 3422/17

What this record establishes

Archived notice · 2017-11-28 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) · SINGAPORE PORT OPERATIONS CONTROL CENTER 070021Z OCT 17.. Issued 2017-10-07 00:40Z. 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 1.432, 104.457. 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
2017-10-07 00:40Z
status
Archived notice
authority
SINGAPORE PORT OPERATIONS CONTROL CENTER 070021Z OCT 17.
issued by
SPOCC
sea
South China Sea
position
1.432, 104.457
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

SOUTH CHINA SEA.
MALAYSIA.
DNC 03.
CHART 71265.
1. DANGEROUS WRECK IN 01-25.92N 104-27.39E.
   SALVAGE OPERATIONS IN PROGRESS UNTIL 27 NOV.
   WIDE BERTH REQUESTED.
2. CANCEL HYDROPAC 893/17.
3. CANCEL THIS MSG 28 NOV 17.

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.
Chart reference
The number of the nautical chart on which the reported position lies.
Dangerous wreck
A sunken vessel close enough to the surface to endanger ships, or wreckage reported in the water.
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.
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.
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 · survey operations

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

99
00
05
10
15
19

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

56 survey operations listed in force · see all

Record snapshot 2026-10-01 21:04Z; source collection times vary.

Surveys

Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →

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.