Underwater operations in progress until 15 jul vicinity of trackline joining 22-14.5N 114-39.1E, 21-31.9N…
South China Sea · HYDROPAC 1717/12
What this record establishes
Archived notice · 2012-07-16 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) · NAVAREA XI 382/12 181108Z JUN 12.. Issued 2012-06-18 15:08Z. 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 map shows the reported line or operation extent; it is not a vessel track. Check the original wording for limits and qualifications.
Current notices and reporting history in the South China Sea →
- issued
- 2012-06-18 15:08Z
- status
- Archived notice
- authority
- NAVAREA XI 382/12 181108Z JUN 12.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- South China Sea
- position
- 20.309, 116.915
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SOUTH CHINA SEA. 1. UNDERWATER OPERATIONS IN PROGRESS UNTIL 15 JUL VICINITY OF TRACKLINE JOINING 22-14.5N 114-39.1E, 21-31.9N 115-56.0E, 21-12.6N 116-11.5E, 20-14.2N 116-23.3E, 19-48.0N 117-17.0E, 18-44.9N 118-58.0E, 18-22.5N 119-14.9E. 2. CANCEL THIS MSG 16 JUL.
Reading this warning
- Underwater operations
- Divers or remotely operated vehicles are working below a vessel that cannot easily move out of the way.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- 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.
Collected reports in this area · survey operations
16 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.
- Salvage operations in progress until further notice in vicinity 17-50N 117-36E by U.S2022-01-29
- Salvage operations in progress until further notice in vicinity 17-50N 117-36E2022-01-29
- Survey operations in progress until 14 sep by M/V sw vespucci towing five mile long cable in area bound by…2019-08-05
- Survey operations 28 sep thru 01 oct by M/V pgs apollo towing ten five mile long cables in area bound by…2017-09-27
- Survey operations in progress until further notice by M/V pgs apollo towing ten five mile long cables in…2017-09-13
- Survey operations in progress until 112200Z sep by M/V pgs apollo towing ten five mile long cables in area…2017-09-10
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
56 survey operations listed in force · see all
Record snapshot 2026-10-03 03:06Z; 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.