Dangerous wreck in 20-41.31N 107-01.71E
South China Sea · HYDROPAC 3271/15
What this record establishes
Archived notice · 2017-01-06 19:17Z
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) · HAIPHONG RADIO 030048Z OCT 15.. Issued 2015-10-03 01:10Z. 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 20.689, 107.028. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.
- HYDROPAC 3271/15 · this notice2015-10-03 · Archived notice
- HYDROPAC 1271/162016-05-02 · Archived notice
- HYDROPAC 2206/162016-07-23 · Archived notice
- HYDROPAC 3873/162016-12-13 · Archived notice
- HYDROPAC 570/172017-02-16 · Archived notice
- HYDROPAC 1619/172017-05-07 · Archived notice
Current notices and reporting history in the South China Sea →
- issued
- 2015-10-03 01:10Z
- status
- Archived notice
- authority
- HAIPHONG RADIO 030048Z OCT 15.
- issued by
- HAIPHONG RADIO
- sea
- South China Sea
- position
- 20.689, 107.028
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
GULF OF TONKIN. VIETNAM. DNC 23. CHART 93620. DANGEROUS WRECK IN 20-41.31N 107-01.71E.
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.
Collected reports in this area · wrecks & obstructions
42 within 180 nm since 2012 · 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.
- Dangerous wreck in 17-59N 106-32E2019-12-30
- Dangerous wreck in 18-07.96N 106-26.66E2019-11-28
- Dangerous wreck in 18-07.61N 106-29.26E2019-11-03
- Dangerous wreck in 19-32.33N 107-42.27E2019-07-20
- Dangerous wreck in 20-42.3N 107-05.5E2019-06-22
- Dangerous wreck in 20-13.42N 106-50.13E2019-05-09
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
38 wrecks & obstructions listed in force · see all
Record snapshot 2026-09-28 14:30Z; source collection times vary.
Wrecks
Dangerous wrecks, shoals and submerged obstructions. All current wrecks & obstructions →
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.