Survey operations are underway by vessel Investigator in the Coral Sea near Australia until further notice, with a one-mile berth requested.
Coral Sea · HYDROPAC 2171/26
What this record establishes
Cancelled notice · 2026-08-21 15:40Z
This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.
- Source and dates
- NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-07-29 04:11Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-08-23 15:17Z. Collection dates record ingestion, not a new incident or a fresh field observation.
- Location covered
- Coral 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.
- issued
- 2026-07-29 04:11Z
- status
- Cancelled notice
- sea
- Coral Sea
- position
- -22.852, 152.633
- vessel
- M/V INVESTIGATOR · 30 messages
- nearest port
- Rockhampton · 96 nm
- source
- NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-08-17 13:41Z
Original warning text
CORAL SEA. AUSTRALIA. SURVEY OPERATIONS IN PROGRESS UNTIL FURTHER NOTICE BY M/V INVESTIGATOR IN AREA BOUND BY 21-52.00S 150-47.00E, 21-52.00S 153-29.00E, 23-42.00S 153-55.00E, 24-22.00S 152-51.00E. ONE MILE BERTH REQUESTED.
Reading this warning
- 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.
Collected reports in this area · survey operations
3 within 180 nm since 2017 · 2 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.
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
55 survey operations listed in force · see all
Record snapshot 2026-10-01 06:30Z; 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.