Debris

Buoy, trailing 700 meter long line, adrift in 17-44.45S 146-53.23E at 071921Z oct

Coral Sea · HYDROPAC 2865/21

What this record establishes

Archived notice · 2021-10-11 01:19Z

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 88/21 072240Z OCT 21.. Issued 2021-10-08 01:19Z. 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
Coral Sea. The parsed report position is -17.741, 146.887. 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

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.

  1. HYDROPAC 2865/21 · this notice2021-10-08 · Archived notice
  2. HYDROPAC 2918/212021-10-13 · Archived notice
Compare all 2 notices, changes and original texts →

Current notices and reporting history in the Coral Sea →

issued
2021-10-08 01:19Z
status
Archived notice
self-cancels
2021-10-11 01:19Z
authority
SEA SAFETY 88/21 072240Z OCT 21.
issued by
SEA SAFETY
sea
Coral Sea
position
-17.741, 146.887
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

CORAL SEA.
AUSTRALIA-NORTHEAST COAST.
DNC 05.
1. BUOY, TRAILING 700 METER LONG LINE, ADRIFT IN
   17-44.45S 146-53.23E AT 071921Z OCT.
2. CANCEL THIS MSG 110119Z OCT 21.

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.
Off station / missing buoy
A buoy that is not in its charted position — dragged, damaged, missing or removed.
Fish aggregating device (FAD)
Floating rafts, nets and lines used by fishing fleets — hazards to propellers when they are adrift or unlit.
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.

All warning terms →

Collected reports in this area · drifting objects

14 within 180 nm since 1999 · 0 in the last 12 months · 0 listed in force now

99
00
05
10
15
20
24

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

J
F
M
A
M
J
J
A
S
O
N
D

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

2 drifting objects listed in force · see all

Record snapshot 2026-10-03 03:32Z; source collection times vary.

Debris

Logs, buoys, mooring gear and other objects adrift. All current drifting objects →

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.