20 meter long wellhead frame, partially submerged and adrift in 20-54.58S 114-54.45E at 310450Z aug
Indian Ocean · HYDROPAC 2545/20
What this record establishes
Archived notice · 2020-09-03 05:24Z
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) · SEA SAFETY 93/20 310510Z AUG 20.. Issued 2020-08-31 05:24Z. 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
- Indian Ocean. The parsed report position is -20.910, 114.907. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
- issued
- 2020-08-31 05:24Z
- status
- Archived notice
- self-cancels
- 2020-09-03 05:24Z
- authority
- SEA SAFETY 93/20 310510Z AUG 20.
- issued by
- SEA SAFETY
- sea
- Indian Ocean
- position
- -20.910, 114.907
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN INDIAN OCEAN. AUSTRALIA-NORTHWEST COAST. DNC 04. 1. 20 METER LONG WELLHEAD FRAME, PARTIALLY SUBMERGED AND ADRIFT IN 20-54.58S 114-54.45E AT 310450Z AUG. 2. CANCEL THIS MSG 030524Z SEP 20.
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.
- Semi-submerged
- Floating at or just below the surface, so hard to see by eye or radar.
- Adrift
- Loose and moving with wind and current — a vessel, container, buoy, log or anything else no longer secured.
- 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.
- Date-time group (DTG)
- A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · other warnings
26 within 180 nm since 2000 · 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.
- Mooring buoy, fl w, in vicinity 20-16.32S 116-16.58E semi-sumerged2026-04-04
- Semi-submerged mooring lightbuoy fl.w in position 20-16.32S 116-16.58E2026-04-04
- Ten meter vessel sunk in 20-59.4S 112-45.3E at 220428Z oct2020-10-22
- 20 meter long wellhead frame, partially submerged and adrift in 20-54.58S 114-54.45E at 260850Z aug2020-08-26
- 40 meter long hose adrift in vicinity 20-01.23S 115-55.53E at 100645Z aug2019-08-10
- 12 six meter yellow mooring buoys within one mile of 19-49.77S 115-39.48E2017-09-08
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 nexans aurora / LALC8 / 257682000 conducting cable laying operations from 19 52.44S…Cable ops · 38.1 nm
- Special purpose vessel fugro kwilena / MLOV8 / 503147420 conducting underwater operations in an area bounded…Surveys · 53 nm
- Drill rig jansz FCS/995031119 in position 19-52.73S 114-36.50E 2.5 nm clearance requestedSurveys · 64.1 nm
Worldwide in the collected sources
23 other warnings listed in force · see all
Record snapshot 2026-10-01 18:39Z; source collection times vary.
Other
Everything the classifier did not place elsewhere. All current other warnings →
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.