Nav aids
GPS unreliable 0900Z to 1700Z and 2100Z to 0100Z commencing daily 10 thru 17 aug vicinity bristol channel…
HYDROLANT 2797/00
- issued
- 2000-08-10 12:49Z
- status
- cancelled 2000-08-10 19:47Z (archive)
- self-cancels
- 2000-08-18 02:00Z
- cancels
- HYDROLANT 2789/00
- authority
- WZ 1557/00 101044Z AUG 00
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. GPS UNRELIABLE 0900Z TO 1700Z AND 2100Z TO 0100Z COMMENCING DAILY 10 THRU 17 AUG VICINITY BRISTOL CHANNEL AND CARDIGAN BAY. 2. CANCEL HYDROLANT 2789/00, AID RESTORED. 3. CANCEL THIS MSG 180200Z AUG.
Activity windows · 16 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2000-08-10 09:00Z | 2000-08-10 17:00Z | — | 8 h |
| 2000-08-10 21:00Z | 2000-08-11 01:00Z | — | 4 h |
| 2000-08-11 09:00Z | 2000-08-11 17:00Z | — | 8 h |
| 2000-08-11 21:00Z | 2000-08-12 01:00Z | — | 4 h |
| 2000-08-12 09:00Z | 2000-08-12 17:00Z | — | 8 h |
| 2000-08-12 21:00Z | 2000-08-13 01:00Z | — | 4 h |
| 2000-08-13 09:00Z | 2000-08-13 17:00Z | — | 8 h |
| 2000-08-13 21:00Z | 2000-08-14 01:00Z | — | 4 h |
| … 8 more | |||
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
Timeline
- Rockabill light 53-36N 006-00W unreliablecancels · 2000-08-09
- Rockabill light 53-36N 006-00W unreliablereplaced · 2000-08-09
- GPS vicinity bristol channel and cardigan bay, dgps station at nash point light 51-24N 003-33W and point…cancelled by · 2000-08-10
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
194 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.