Survey operations in progress until 02 jun by M/V elsa regent towing 10000 meter long cable in area bound by…
South China Sea · HYDROPAC 1217/19
What this record establishes
Archived notice · 2019-04-12 11:50Z
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 210/19 102330Z APR 19.. Issued 2019-04-11 00:18Z. 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 an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
Current notices and reporting history in the South China Sea →
- issued
- 2019-04-11 00:18Z
- status
- Archived notice
- authority
- NAVAREA XI 210/19 102330Z APR 19.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- South China Sea
- position
- 11.995, 110.062
- vessel
- M/V ELSA REGENT · 12 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SOUTH CHINA SEA. VIETNAM. DNC 11. 1. SURVEY OPERATIONS IN PROGRESS UNTIL 02 JUN BY M/V ELSA REGENT TOWING 10000 METER LONG CABLE IN AREA BOUND BY 12-36.2N 109-31.1E, 11-59.1N 109-32.0E, 11-24.1N 109-24.1E, 11-24.1N 110-38.0E, 12-37.1N 110-37.0E. MILE BERTH REQUESTED. 2. CANCEL HYDROPAC 1211/19. 3. CANCEL THIS MSG 03 JUN 19.
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.
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- Towed array / streamer
- Equipment towed a long way behind a vessel — sonar, a hydrophone cable, a sampling sled — invisible at the surface.
- Tow / towing
- A vessel towing another vessel, a barge or a structure — slow, hard to manoeuvre, and with a long line between.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- 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.
- 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.
Collected reports in this area · survey operations
16 within 180 nm since 2016 · 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.
- Survey operations in progress until 10 oct by M/V polarcus alima towing six four mile long cables in area…2020-09-09
- Survey operations in progress in area bound by: a. 12-30.67N 109-23.32E, 12-30.31N 109-17.44E, 12-29.59N…2019-09-12
- Survey operations in progress in area bound by 10-29.64N 107-49.46E, 10-29.64N 107-49.74E, 10-29.37N…2019-09-03
- Survey operations in progress until 06 jun by M/V elsa regent towing 10000 meter long cable in area bound by…2019-04-12
- Survey operations in progress until 25 jun in area bound by 11-50.00N 109-16.00E, 11-50.00N 109-25.53E,…2019-04-11
- Survey operations 11 apr thru 02 jun by M/V elsa regent towing 10000 meter long cable in area bound by…2019-04-10
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 2026-10-01 21:05Z; 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.