Survey operations in progress until 30 sept by M/V geo surveyor towing 1500 meter long cable in area bound…
South China Sea · HYDROPAC 1336/05
What this record establishes
Archived notice · 2005-10-01 00:00Z
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) · HYDROGRAPHIC DEPARTMENT OF MSA TOKYO 190805Z AUG 05; AUSCOAST 220/05 190840Z AUG 05.. Issued 2005-08-19 10:21Z. 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
- Perth dgps station in 31-47.9S 115-56.0E inoperativecancelled by this notice
Current notices and reporting history in the South China Sea →
- issued
- 2005-08-19 10:21Z
- status
- Archived notice
- authority
- HYDROGRAPHIC DEPARTMENT OF MSA TOKYO 190805Z AUG 05; AUSCOAST 220/05 190840Z AUG 05.
- issued by
- HYDROGRAPHIC DEPARTMENT OF MSA TOKYO
- sea
- South China Sea
- position
- 5.797, 114.387
- vessel
- M/V GEO SURVEYOR · 70 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. SURVEY OPERATIONS IN PROGRESS UNTIL 30 SEPT BY M/V GEO SURVEYOR TOWING 1500 METER LONG CABLE IN AREA BOUND BY 05-48.4N 114-18.1E, 05-53.0N 114-22.7E, 05-47.2N 114-28.4E, 05-42.7N 114-23.8E. WIDE BERTH REQUESTED. 2. CANCEL HYDROPAC 1335/05(74). 3. CANCEL THIS MSG 01 OCT.
Reading this warning
- 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.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
- 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 · survey operations
16 within 180 nm since 1999 · 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.
- Survey operations in progress until further notice by M/V ramform sovereign towing 12 9000 meter long cables…2023-06-04
- Survey operations in progress until further notice by M/V ramform sovereign towing 12 9500 meter long cables…2023-02-18
- Survey operations 07 oct to 30 nov by M/V polacus asimia towing ten 8500 meter long cables in area bound by…2019-10-05
- Survey operations in progress until 31 jan 20 by M/V ramform hyperion towing 16 8100 meter long cables in…2019-08-05
- Survey operations in progress until further notice by M/V polarcus naila towing ten 9000 meter long cables…2018-09-09
- Survey operations 16 aug to 20 sep by M/V cgg amadeus towing eight 5000 meter long cables in area bound by…2018-08-14
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
54 survey operations listed in force · see all
Record snapshot 2026-09-29 18:46Z; source collection times vary.
Surveys
Hydrographic and scientific survey vessels, often towing long arrays. All current survey operations →
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.