Nav aids

Radar beacon at Imperieuse Reef Light (17-31.32S 118-57.18E) is inoperative.

Indian Ocean · HYDROPAC 1434/24

What this record establishes

Cancelled notice · 2026-08-14 18:10Z

This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.

Source and dates: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · AUSCOAST 144/24 010616Z MAY 24.. Issued 2024-05-01 06:54Z. First collected 2026-08-17 13:41Z; last seen in collection 2026-08-17 15:50Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered: Indian Ocean. The parsed report position is -17.522, 118.953. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Current notices and reporting history in the Indian Ocean →

issued: 2024-05-01 06:54Z
status: Cancelled notice
authority: AUSCOAST 144/24 010616Z MAY 24.
issued by: AUSCOAST
sea: Indian Ocean
position: -17.522, 118.953
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:41Z

Original warning text

EASTERN INDIAN OCEAN.
DNC 04.
RACON AT IMPERIEUSE REEF LIGHT
17-31.32S 118-57.18E INOPERATIVE.

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.
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.

All warning terms →

Collected reports in this area · aids-to-navigation notices

51 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.

RACON at port hedland C1 light in 19-59.49S 118-26.17E inoperative2023-05-24
RACON at port hedland C1 light 19-59.49S 118-26.17E inoperative2023-03-10
Port hedland light 20-04.54S 118-25.63E unlit2022-10-03
Port hedland C2 light 19-59.6S 118-26.4E unlit2020-04-23
Momi bay range light, rear 17-54.6S 117-17.5E unlit2020-04-21
RACON at angel platform 19-29.92S 116-35.88E inoperative2020-02-11

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

137 aids-to-navigation notices listed in force · see all

Record snapshot 2026-10-01 21:07Z; 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.