Seismic survey 260001Z jul to 101200Z aug by M/V phu my 06 towing two mile long cable in area bound by…
South China Sea · HYDROPAC 2226/16
What this record establishes
Archived notice · 2016-08-10 13:00Z
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 448/16 251426Z JUL 16.. Issued 2016-07-25 14:45Z. 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.
Current notices and reporting history in the South China Sea →
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2016-07-26 00:01Z | 2016-08-10 12:00Z | — | 371 h 59 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2016-07-25 14:45Z
- status
- Archived notice
- self-cancels
- 2016-08-10 13:00Z
- authority
- NAVAREA XI 448/16 251426Z JUL 16.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- South China Sea
- position
- 17.671, 107.642
- vessel
- M/V PHU MY 06
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SOUTH CHINA SEA. GULF OF TONKIN. VIETNAM. DNC 11. 1. SEISMIC SURVEY 260001Z JUL TO 101200Z AUG BY M/V PHU MY 06 TOWING TWO MILE LONG CABLE IN AREA BOUND BY 17-52-32.7N 107-11-49.2E, 17-30-39.5N 107-13-47.4E, 17-25-20.7N 107-17-56.2E, 17-28-01.4N 107-49-51.8E, 17-19-43.8N 108-17-56.5E, 17-33-46.0N 108-09-10.5E, 18-03-33.3N 107-35-22.7E. 2. CANCEL THIS MSG 101300Z AUG 16.
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.
- 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.
- 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
26 within 180 nm since 2000 · 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.
- 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 25 nov by vessel towing 12 6000 meter long cables in area bound by 17-51.9N…2014-10-17
- Seismic survey in progress until 30 sep by vessel towing six 6000 meter long cables in area bound by 19-36N…2014-07-04
- Seismic survey in progress until 31 jul by M/V veritas viking II towing eight 8000 meter long cables in…2014-06-13
- Seismic survey in progress until 30 apr by vessel towing six 6000 meter long cables in area bound by 18-17N…2014-03-24
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 2026-10-02 00:10Z; 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.