Prn 04 unusable 301600Z sep to 010400Z oct
HYDROLANT 1576/04
What this record establishes
Archived notice · 2004-09-29 01:48Z
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) · COGARD NAVCEN 594/04 301600Z SEP 04.. Issued 2004-09-27 12:12Z. 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
- No named location parsed. No usable coordinates were parsed; a location-based nearby search is unavailable. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel HYDROLANT 1537/04, buoy recoveredlater cancellation notice
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2004-09-30 16:00Z | 2004-10-01 04:00Z | — | 12 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2004-09-27 12:12Z
- status
- Archived notice
- self-cancels
- 2004-10-01 05:00Z
- authority
- COGARD NAVCEN 594/04 301600Z SEP 04.
- issued by
- COGARD NAVCEN
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. PRN 04 UNUSABLE 301600Z SEP TO 010400Z OCT. 2. CANCEL THIS MSG 010500Z OCT.
Reading this warning
- 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.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Nearby notices listed in force · within 120 nm
No parsed position is available for this comparison.
Worldwide in the collected sources
134 aids-to-navigation notices listed in force · see all
Record snapshot 2026-10-04 02:03Z; 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.