Seismic survey 30 nov thru 10 dec by M/V nordic energy towing 7000 meter long cable in area bound by 11-20N…
South China Sea · HYDROPAC 3335/11
What this record establishes
Archived notice · 2011-12-11 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 928/11 291108Z NOV 11 - AUSCOAST 306/11 CX 290957Z NOV 11.. Issued 2011-11-29 12:14Z. 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
- Nga chart 75130 (16TH ed)cancelled by this notice
Current notices and reporting history in the South China Sea →
- issued
- 2011-11-29 12:14Z
- status
- Archived notice
- authority
- NAVAREA XI 928/11 291108Z NOV 11 - AUSCOAST 306/11 CX 290957Z NOV 11.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- South China Sea
- position
- 11.050, 118.817
- vessel
- M/V NORDIC ENERGY · 26 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 30 NOV THRU 10 DEC BY M/V NORDIC ENERGY TOWING 7000 METER LONG CABLE IN AREA BOUND BY 11-20N 118-31E, 10-46N 118-29E, 10-46N 119-07E, 11-20N 119-09E. 2. CANCEL HYDROPAC 3328/11(75), STATION RESTORED. 3. CANCEL THIS MSG 11 DEC.
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.
- 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
37 within 180 nm since 2002 · 2 in the last 12 months · 1 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.
- Pipeline operations in progress until 08 oct by M/V fortitude in vicinity: a. 11-38.23N 118-56.36E2026-09-24
- Submarine pipeline works by M/V fortitude2026-09-24
- Pipeline operations in progress until further notice in vicinity of trackline joining 11-38.57N 118-54.38E…2024-03-18
- Pipeline repairing works2024-03-18
- Cable operations in progress until 11 apr by cableship vega in 10-36.00N 121-22.90E2024-03-15
- Pipeline operations in progress until further notice by M/V skandi hawk in vicinity of trackline joining…2024-02-05
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
- Submarine pipeline works by M/V fortitudeCable ops · 33.7 nm
Worldwide in the collected sources
23 cable & pipeline work listed in force · see all
Record snapshot 2026-10-03 14:23Z; 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.