Survey operations by vessel Geo Coral towing 12 five-mile cables in Timor Sea, Indonesia; seven-mile berth requested.
Timor Sea · HYDROPAC 710/24
What this record establishes
Cancelled notice · 2026-08-14 18:10Z
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 broadcast-warn JSON (archive, frozen 2024-05) · NAVAREA XI 101/24 020815Z MAR 24.. Issued 2024-03-02 08:25Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-08-17 15:50Z. 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
- issued
- 2024-03-02 08:25Z
- status
- Cancelled notice
- authority
- NAVAREA XI 101/24 020815Z MAR 24.
- NAVAREA
- NAVAREA XI · named as the source of this relay
- sea
- Timor Sea
- position
- -11.625, 125.542
- vessel
- M/V GEO CORAL · 58 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:41Z
Original warning text
TIMOR SEA. INDONESIA. DNC 04. 1. SURVEY OPERATIONS IN PROGRESS BY M/V GEO CORAL TOWING 12 FIVE MILE LONG CABLES IN AREA BOUND BY 10-54.00S 124-59.00E, 12-21.00S 124-59.00E, 12-21.00S 126-06.00E, 10-54.00S 126-06.00E. SEVEN MILE BERTH REQUESTED. 2. CANCEL HYDROPAC 709/24.
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.
- 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.
Collected reports in this area · survey operations
49 within 180 nm since 2006 · 9 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 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
- Underwater operations in progress until further notice by M/V safe boreas in area bound by 12-54.90S…2026-03-29
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 · 18.5 nm
- Underwater operations in progress until further notice by M/V safe boreas in area bound by 12-54.90S…Surveys · 100.6 nm
- Special purpose vessel safe boreas 565905000 supporting underwater operations in an area bounded by…Surveys · 100.6 nm
Worldwide in the collected sources
56 survey operations listed in force · see all
Record snapshot 2026-10-01 18:14Z; 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.