Nav aids
Loran-c chain lessay, rate 6731-MASTER and 7499-X off air 0900Z to 1830Z daily 11 thru 13 sep, and 140500Z…
HYDROLANT 1577/07
- issued
- 2007-09-11 12:54Z
- status
- cancelled 2007-09-14 13:30Z (archive)
- self-cancels
- 2007-09-14 13:30Z
- cancels
- HYDROLANT 1562/07
- authority
- NAVAREA I 237/07 111215Z SEP 07.
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. LORAN-C CHAIN LESSAY, RATE 6731-MASTER AND 7499-X OFF AIR 0900Z TO 1830Z DAILY 11 THRU 13 SEP, AND 140500Z TO 141230Z SEP. 2. CANCEL HYDROLANT 1562/07. 3. CANCEL THIS MSG 141330Z SEP.
Activity windows · 4 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2007-09-11 09:00Z | 2007-09-11 18:30Z | — | 9 h 30 |
| 2007-09-12 09:00Z | 2007-09-12 18:30Z | — | 9 h 30 |
| 2007-09-13 09:00Z | 2007-09-13 18:30Z | — | 9 h 30 |
| 2007-09-14 05:00Z | 2007-09-14 12:30Z | — | 7 h 30 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
Timeline
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
193 aids-to-navigation notices in force · see all
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.