Survey operations in progress until further notice by M/V polarcus asima towing five mile long cable in area…
Timor Sea · HYDROPAC 3909/19
What this record establishes
Archived notice · 2019-12-01 04:21Z
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) · AUSCOAST 339/19 272136Z NOV 19.. Issued 2019-11-27 21:57Z. 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
- Timor 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 3909/19 and this msg, operations suspendedlater cancellation notice
- issued
- 2019-11-27 21:57Z
- status
- Archived notice
- authority
- AUSCOAST 339/19 272136Z NOV 19.
- issued by
- AUSCOAST
- sea
- Timor Sea
- position
- -13.000, 126.392
- vessel
- M/V POLARCUS ASIMA · 48 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN INDIAN OCEAN. TIMOR SEA. AUSTRALIA-NORTHWEST COAST. DNC 04. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V POLARCUS ASIMA TOWING FIVE MILE LONG CABLE IN AREA BOUND BY 12-32S 123-37E, 13-28S 123-37E, 13-28S 129-10E, 12-32S 129-10E. SIX MILE 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
54 within 180 nm since 2006 · 10 in the last 12 months · 3 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 shark 1 in area bound by 11-30.00S 125-05.00E,…2026-09-28
- Special purpose vessel shark 1/T2DT6/572762220 conducting hydrographic survey in an area bounded by 11-30.00…2026-09-28
- Underwater operations in progress until further notice by M/V reach remote 2 in area bound by 11-13.00S…2026-09-05
- Survey operations in progress until further noticeby M/V sw bly towing twelve 7300 meter cables in area…2026-08-05
- Survey operations in progress until further notice by M/V shark 1 in area bound by 11-30.00S 125-05.00E,…2026-07-14
- Special purpose vessel shark 1 / T2DT6 / 572762220 conducting hydrographic survey in an area bounded by…2026-07-14
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
- Special purpose vessel shark 1/T2DT6/572762220 conducting hydrographic survey in an area bounded by 11-30.00…Surveys · 80.8 nm
- Underwater operations in progress until further notice by M/V safe boreas in area bound by 12-54.90S…Surveys · 110.6 nm
- Special purpose vessel safe boreas 565905000 supporting underwater operations in an area bounded by…Surveys · 110.6 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-03 01:13Z; 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.