Survey operations 09 may until further notice by M/V polarcus naila towing 12 9000 meter long cables in area…
South China Sea · HYDROPAC 1628/17
What this record establishes
Archived notice · 2017-06-07 23:42Z
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 313/17 080852Z MAY 17.. Issued 2017-05-08 09:19Z. 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
- Cancel HYDROPAC 1628/17 and this msg, survey completedlater cancellation notice
Current notices and reporting history in the South China Sea →
- issued
- 2017-05-08 09:19Z
- status
- Archived notice
- authority
- NAVAREA XI 313/17 080852Z MAY 17.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- South China Sea
- position
- 7.271, 103.690
- vessel
- M/V POLARCUS NAILA · 61 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
SOUTH CHINA SEA. DNC 03. SURVEY OPERATIONS 09 MAY UNTIL FURTHER NOTICE BY M/V POLARCUS NAILA TOWING 12 9000 METER LONG CABLES IN AREA BOUND BY 07-12N 103-22E, 07-32N 103-51E, 07-25N 104-00E, 07-00N 103-37E. WIDE BERTH REQUESTED.
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.
- Survey operations
- A research or survey vessel is mapping the seabed or water column, often while towing equipment.
- Until further notice
- The operation or danger has no scheduled end; the warning stays in force until a later message cancels it.
- 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.
Collected reports in this area · survey operations
8 within 180 nm since 2009 · 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.
- Survey operations in progress until 31 dec by M/V pxgeo 2 towing eight five mile long cables in area bound…2026-08-06
- Survey operations in progress until 15 dec by M/V sw vespucci towing ten 8100 meter long cables in area…2019-10-15
- Survey operations in progress until 27 jul by M/V sw vespucci towing eight 3.5 mile long cables in area…2019-07-04
- Survey operations 05 nov until further notice by M/V polarcus naila towing ten 5000 meter long cables in…2017-11-04
- Survey operations in progress until 31 may by M/V ptsc researcher towing 1500 meter long cable and M/V ptsc…2017-03-15
- Survey operations in progress until 05 may by M/V pacific explorer in 05-50N 106-20E2010-03-24
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
Worldwide in the collected sources
55 survey operations listed in force · see all
Record snapshot 2026-10-01 07:25Z; 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.