Nga chart 74021 (7TH ed)
Indian Ocean · HYDROPAC 2478/10
What this record establishes
Archived notice · 2010-12-26 04:10Z
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 281/10 170051Z NOV 10.. Issued 2010-11-17 02:15Z. 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 -20.068, 113.602. 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
- Nga chart 74021 (7TH ed) 1. mooring buoys established in: a. 20-03.1S 113-36.1Ecancelled by this notice
- Tsunami warninglater cancellation notice
- issued
- 2010-11-17 02:15Z
- status
- Archived notice
- authority
- AUSCOAST 281/10 170051Z NOV 10.
- issued by
- AUSCOAST
- sea
- Indian Ocean
- position
- -20.068, 113.602
- 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 74021 (7TH ED). 1. MOORING BUOYS ESTABLISHED IN: A. 20-03.10S 113-36.10E. B. 20-03.60S 113-36.60E. C. 20-05.00S 113-36.01E. D. 20-04.56S 113-35.80E. 2. CANCEL HYDROPAC 2454/10.
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.
- 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
120 within 180 nm since 1998 · 3 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.
- Point cloates light 22-42.57S 113-40.86E unlit2026-03-28
- Eight buoys, yellow, fl w 7 sec, four meters in height, established in area within one mile of 19-45.73S…2026-02-27
- Eight buoys, yellow, fl w 7 sec, four meters in height, established in area within one mile of 19-57.09S…2025-12-22
- North west cape light 21-48.40S 114-09.60E2024-11-11
- North west cape light 21-48.40S 114-09.60E unlit2023-05-16
- Mary anne reef light 21-15.70S 115-27.80E unlit2023-05-08
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
Worldwide in the collected sources
138 aids-to-navigation notices listed in force · see all
Record snapshot 2026-09-29 22:31Z; 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.