Nav aids

Nga chart 74485 (3RD ed)

Indian Ocean · HYDROPAC 726/11

What this record establishes

Archived notice · 2011-03-12 10:05Z

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 85/11 080726Z MAR 11.. Issued 2011-03-08 08:45Z. 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: Indian Ocean. The parsed report position is -19.992, 118.435. 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: 2011-03-08 08:45Z
status: Archived notice
authority: AUSCOAST 85/11 080726Z MAR 11.
issued by: AUSCOAST
sea: Indian Ocean
position: -19.992, 118.435
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

AUSTRALIA-NORTHWEST COAST.
NGA CHART 74485 (3RD ED).
PORT HEDLAND C1 LIGHT 19-59.54S 118-26.10E UNLIT.

Reading this warning

Chart reference: The number of the nautical chart on which the reported position lies.
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.
Unlit / extinguished: A light, buoy or structure that is not showing its charted light.

All warning terms →

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

161 within 180 nm since 1998 · 2 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.

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

Special purpose vessel ve constructor / H9YT / 373335000 conducting underwater operations in an area bounded…Surveys · 108.9 nm
Underwater operations in progress until further notice by vessel ve constructor in area bound by 19-12.00S…Surveys · 108.9 nm

Worldwide in the collected sources

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

Record snapshot 2026-10-03 12:33Z; 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.