RACON at middle bank south edge light 33-43.9S 137-29.8E unreliable
Great Australian Bight · HYDROPAC 712/07
What this record establishes
Archived notice · 2007-04-21 05:09Z
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) · AUSCOAST 74/07 CX 200439Z APR 07; AUSCOAST 75/07 200402Z APR 07.. Issued 2007-04-20 06:40Z. 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
- Great Australian Bight. The parsed report position is -33.732, 137.497. 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
- Archer point light 15-35.6S 145-19.7E unlitcancelled by this notice
- Cancel HYDROPAC 712/07 and this msg, aid restoredlater cancellation notice
Current notices and reporting history in the Great Australian Bight →
- issued
- 2007-04-20 06:40Z
- status
- Archived notice
- authority
- AUSCOAST 74/07 CX 200439Z APR 07; AUSCOAST 75/07 200402Z APR 07.
- issued by
- AUSCOAST
- sea
- Great Australian Bight
- position
- -33.732, 137.497
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
CHART 75143 (4TH ED). 1. RACON AT MIDDLE BANK SOUTH EDGE LIGHT 33-43.9S 137-29.8E UNRELIABLE. 2. CANCEL HYDROPAC 708/07, AID RESTORED.
Reading this warning
- Chart reference
- The number of the nautical chart on which the reported position lies.
- RACON (radar beacon)
- A radar beacon on a buoy, lighthouse or structure that answers a ship's radar with a Morse-code mark on the screen.
- 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.
- Inoperative / unreliable / off air
- An aid or radio service is not working as charted or published.
- 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 · aids-to-navigation notices
157 within 180 nm since 1999 · 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.
- West cape light 35-14.70S 136-49.44E unreliable2025-01-17
- Cape donington light 35-43.59S 135-59.63E unreliable2024-12-21
- South neptunes light 35-20.28S 136-07.04E unreliable2024-09-20
- Warburto point light 34-00.37S 137-33.04E unreliable2024-04-30
- Point marsden light 35-34.05S 137-37.24E unlit2024-01-09
- Althorpe island light 35-22.10S 136-51.50E unreliable2023-12-19
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
134 aids-to-navigation notices listed in force · see all
Record snapshot 2026-10-03 13:07Z; source collection times vary.
Nav aids
Lights extinguished, buoys off station, RACON/NAVTEX outages. All current aids-to-navigation notices →
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.