Seismic survey in progress until 21 apr by M/V cgg amadeus towing eight 6000 meter long cables in area bound…
South China Sea · HYDROPAC 1265/15
What this record establishes
Archived notice · 2015-04-22 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 268/15 151107Z APR 15.. Issued 2015-04-15 11:20Z. 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
- 2015-04-15 11:20Z
- status
- Archived notice
- authority
- NAVAREA XI 268/15 151107Z APR 15.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- South China Sea
- position
- 13.819, 109.817
- vessel
- M/V CGG AMADEUS · 180 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, DNC 23. 1. SEISMIC SURVEY IN PROGRESS UNTIL 21 APR BY M/V CGG AMADEUS TOWING EIGHT 6000 METER LONG CABLES IN AREA BOUND BY 15-05N 109-30E, 15-05N 110-00E, 11-50N 110-00E, 11-50N 109-48E, 14-00N 109-48E, 14-00N 109-30E. 2. CANCEL HYDROPAC 906/15. 3. CANCEL THIS MSG 22 APR 15.
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.
- Seismic survey
- A survey that maps the rock beneath the seabed with sound pulses from air guns, recorded on streamers kilometres long.
- 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
21 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
- Seismic survey in progress until 25 jun by M/V cgg amadeus towing eight 6000 meter long cables in area bound…2015-06-02
- 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
- Seismic survey 01 may thru 15 jun by M/V veritas viking II in area bound by 12-56.0N 110-04.0E, 13-12.7N…2014-04-27
- Seismic survey 01 may thru 15 jun by M/V veritas viking II in area bound by 12-55.97N 110-03.96E, 13-12.71N…2014-04-26
- Seismic survey in progress until 25 aug by M/V cgg amadeus towing eight 8000 meter long cables in area bound…2013-07-14
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
22 cable & pipeline work listed in force · see all
Record snapshot 2026-09-26 13:36Z; 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.