Incidents · distress

Distress signal received on 121.5 mhz vicinity 11-14S 144-04E at 171248Z apr

Coral Sea · HYDROPAC 686/04

What this record establishes

Archived notice · 2004-04-18 01:00Z

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) · AUSSAR 3114/04 POR EGC# 807171320Z APR 04 ; AUSSAR POR EGC# 804 171316Z APR 04. Issued 2004-04-17 15:26Z. 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 -11.233, 144.067. 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 messages are connected by recorded cancellation references. The links establish relationships between notices; they do not by themselves confirm a single object, a continuous track, or recovery.

  1. HYDROPAC 685/042004-04-17 · Archived notice
  2. HYDROPAC 686/04 · this notice2004-04-17 · Archived notice
  3. HYDROPAC 688/042004-04-18 · Archived notice
  4. HYDROLANT 685/042004-04-23 · Archived notice
Compare all 4 notices, changes and original texts →

Current notices and reporting history in the Coral Sea →

issued
2004-04-17 15:26Z
status
Archived notice
authority
AUSSAR 3114/04 POR EGC# 807171320Z APR 04 ; AUSSAR POR EGC# 804 171316Z APR 04
issued by
AUSSAR
sea
Coral Sea
position
-11.233, 144.067
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

1. DISTRESS SIGNAL RECEIVED ON 121.5 MHZ VICINITY
   11-14S 144-04E AT 171248Z APR. VESSELS IN VICINITY
   REQUESTED TO KEEP A SHARP LOOKOUT, ASSIST IF POSSIBLE.
   REPORTS TO RCC AUSTRALIA, TELEX: 7162025,
   PHONE: 612 6230 6811, FAX: 612 6230 6868.
2. CANCEL HYDROLANT 685/04.

Reading this warning

Distress signal received
A rescue centre has received an alert — from a beacon, a radio call or a satellite terminal — and is asking ships to look.
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.
Keep a sharp lookout
A request to every ship in the area to watch for the vessel, people or object described.
Assist if possible
The second half of the standard rescue request: ships able to help are asked to do so.
RCC / JRCC (Rescue Coordination Centre)
The centre that organises search and rescue in its region; warnings ask ships to send their reports there.
Cancellation reference
A line that cancels an earlier warning by its number, such as CANCEL HYDROLANT 1085/12.
HYDROLANT
The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.

All warning terms →

Collected reports in this area · distress & casualty cases (archived)

327 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

0 distress & casualty cases (archived) listed in force · see all

Record snapshot 2026-10-03 04:03Z; source collection times vary.

Incidents

Search-and-rescue broadcasts, published only once a case has been closed for 30 days: groundings, sinkings, capsizes, fires, man overboard, overdue vessels. Nothing here is live. All current distress & casualty cases (archived) →

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.