Derelict S/V tropicat partially submerged and adrift in 09-17.9S 136-36.6E
Arafura Sea · HYDROPAC 3863/17
What this record establishes
Archived notice · 2017-11-12 01:49Z
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 79/17 090137Z NOV 17.. Issued 2017-11-09 01:49Z. 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
- Arafura Sea. The parsed report position is -9.298, 136.610. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Derelict S/V tropicat partially submerged and adrift in 09-25.43S 136-11.26E at 100821Z novlater cancellation notice
These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.
- HYDROPAC 3863/17 · this notice2017-11-09 · Archived notice
- HYDROPAC 3883/172017-11-10 · Archived notice
- issued
- 2017-11-09 01:49Z
- status
- Archived notice
- self-cancels
- 2017-11-12 01:49Z
- authority
- SEA SAFETY 79/17 090137Z NOV 17.
- issued by
- SEA SAFETY
- sea
- Arafura Sea
- position
- -9.298, 136.610
- vessel
- S/V TROPICAT · 4 messages
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
ARAFURA SEA. INDONESIA. DNC 05. 1. DERELICT S/V TROPICAT PARTIALLY SUBMERGED AND ADRIFT IN 09-17.9S 136-36.6E. 2. CANCEL THIS MSG 120149Z NOV 17.
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.
- Derelict
- An abandoned vessel still afloat and drifting, with no one on board.
- 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.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
- 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.
Collected reports in this area · derelict & adrift vessels
41 within 180 nm since 2001 · 0 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.
- 15 meter F/V adrift in vicinity 09-39.07S 135-58.66E at 292205Z feb2024-03-01
- M/V vivierae II disabled and adrift due to engine failure in 08-47.08S 137-31.14E2023-03-05
- Five meter vessel adrift in vicinity 10-50.00S 138-53.00E at 010701Z nov2022-11-01
- 20 meter F/V, orange hull, adrift in vicinity 10-11.30S 138-32.01E at 140730Z sep2022-09-14
- Derelict 20 meter vessel adrift in 10-47.3S 135-45.2E at 181107Z jan2021-01-18
- 20 meter vessel adrift in 10-20.26S 133-59.28E at 100700Z jan2021-01-10
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
5 derelict & adrift vessels listed in force · see all
Record snapshot 2026-09-29 13:58Z; source collection times vary.
Derelicts
Abandoned, disabled or drifting vessels. All current derelict & adrift vessels →
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.