Survey operations in progress until further notice by M/V geo coral in area bound by 38-06.65S 147-54.93E,…
Bass Strait · HYDROPAC 4303/19
What this record establishes
Archived notice · 2020-01-02 23:15Z
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 379/19 310334Z DEC 19.. Issued 2019-12-31 04:07Z. 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
- Bass Strait. 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
- issued
- 2019-12-31 04:07Z
- status
- Archived notice
- authority
- AUSCOAST 379/19 310334Z DEC 19.
- issued by
- AUSCOAST
- sea
- Bass Strait
- position
- -38.363, 148.684
- vessel
- M/V GEO CORAL · 58 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
BASS STRAIT. TASMAN SEA. AUSTRALIA-SOUTHEAST COAST. DNC 05. 1. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V GEO CORAL IN AREA BOUND BY 38-06.65S 147-54.93E, 38-36.96S 147-54.93E, 38-36.96S 149-27.12E, 38-06.65S 149-27.12E. SIX MILE BERTH REQUESTED. 2. CANCEL HYDROPAC 4301/19.
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.
- 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.
Collected reports in this area · survey operations
101 within 180 nm since 2001 · 3 in the last 12 months · 2 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.
- Special purpose vessel samson explorer / VNW5773 / 503096000 conducting underwater operations in an area…2026-09-30
- Drill rig valaris 107/A8GS5 in position 38-17.79S 147-40.57E 2.5 nm clearance requested2026-08-20
- Underwater operations in progress until further notice by M/V pmg emerald in area bound by 39-01.29S…2026-02-12
- Underwater operations in progress until further notice by M/V investigator in area bound by 37-57.00S…2024-05-10
- Underwater operations in progress until further notice by M/V investigator along trackline joining 37-57.00S…2024-05-10
- Sub-surface scientific moorings established in: a. 38-07.56S 147-31.92E2024-03-04
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 2026-09-30 05:37Z; 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.