Seismic survey in progress until 301600Z aug by M/V western spirit towing eight 6000 meter long cables in…
South China Sea · HYDROPAC 1134/10
What this record establishes
Archived notice · 2010-06-02 01:38Z
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 384/10 011544Z JUN 10.. Issued 2010-06-01 17:13Z. 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
- 2010-06-01 17:13Z
- status
- Archived notice
- self-cancels
- 2010-08-30 17:00Z
- authority
- NAVAREA XI 384/10 011544Z JUN 10.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- South China Sea
- position
- 15.621, 111.427
- vessel
- M/V WESTERN SPIRIT · 51 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SOUTH CHINA SEA. 1. SEISMIC SURVEY IN PROGRESS UNTIL 301600Z AUG BY M/V WESTERN SPIRIT TOWING EIGHT 6000 METER LONG CABLES IN AREA BOUND BY 15-48.1N 110-52.2E, 16-10.0N 111-36.2E, 15-26.3N 111-59.0E, 15-04.5N 111-15.2E. 2. CANCEL HYDROPAC 1116/10. 3. CANCEL THIS MSG 301700Z AUG.
Reading this warning
- Seismic survey
- A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- 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 · cable & pipeline work
35 within 180 nm since 2001 · 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.
- Cable operations in progress until 31 dec 19 by cableship responders along trackline joining 13-44.90N…2019-11-28
- Cable operations 24 jun until further notice by cableship rene descartes in vicinity of trackline joining…2017-06-23
- Seismic survey in progress until 20 sep by vessel towing ten 6000 meter long cables in area bound by 18-22N…2015-08-24
- Seismic survey in progress until 30 aug by vessel towing six 6000 meter long cables in area bound by 17-46N…2015-07-28
- Seismic survey in progress until 21 apr by M/V cgg amadeus towing eight 6000 meter long cables in area bound…2015-04-15
- Seismic survey 16 mar thru 16 apr by M/V cgg amadeus towing eight 6000 meter long cables in area bound by…2015-03-15
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
24 cable & pipeline work listed in force · see all
Record snapshot 2026-10-01 23:02Z; source collection times vary.
Cable ops
Cable laying, pipeline and seismic operations. All current cable & pipeline work →
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.