Cable ops · Research

Seismic survey by vessel PXGEO 2 towing eight 5-mile cables in the southern Gulf of Thailand and South China Sea until 31 December 2026.

South China Sea · NAVAREA XI 356/26

What this record establishes

Listed in force

The latest collected record lists this warning as active. This is the status of the notice, not a live observation of conditions at the location.

Source and dates: Japan Coast Guard JHOD NAVAREA XI · Japan Coast Guard (JHOD). Issued 2026-08-06 00:00Z. First collected 2026-08-17 13:42Z; last seen in collection 2026-08-17 14:24Z. 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 →

issued: 2026-08-06 00:00Z
status: Listed in force
authority: Japan Coast Guard (JHOD)
NAVAREA: NAVAREA XI
issued by: JAPAN COAST GUARD
sea: South China Sea
position: 6.506, 102.805
vessel: M/V PXGEO 2 · 12 messages
nearest port: Songkhla · 140 nm
source: Japan Coast Guard JHOD NAVAREA XI · first seen 2026-08-17 13:42Z

Original warning text

GULF OF THAILAND AND SOUTH CHINA SEA,
SOUTHERN PART.
SEISMIC SURVEY WORKS BY M/V PXGEO 2
TOWING EIGHT CABLES, EACH 5 MILE LONG.
UNTIL 31 DEC 2026. AREA BOUNDED BY
06-33N 103-25E 06-50N 102-58E
06-55N 103-14E 07-02N 103-04E
06-50N 102-21E 06-28N 102-09E
05-54N 103-01E.
CANCEL THIS MSG 01 JAN 2027.

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.
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.
CANCEL THIS MSG: The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Conditions at the position · now

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MET Norway · NOAA WaveWatch III · HYCOM · GEBCO 2020 · model data at the centroid, not an observation

Collected reports in this area · cable & pipeline work

61 within 180 nm since 2002 · 1 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.

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

Survey operations in progress until 31 dec by M/V pxgeo 2 towing eight five mile long cables in area bound…Surveys · 0 nm

Worldwide in the collected sources

24 cable & pipeline work listed in force · see all

Record snapshot 2026-10-01 05:35Z; 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.