Nav aids

Fog signal at south bishop light 51-51N 005-25W inoperative

HYDROLANT 923/99

issued: 1999-05-06 08:25Z
status: cancelled 1999-05-06 00:00Z (archive)
cancels: HYDROLANT 910/99
position: 51.850, -5.417
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

CHART 36040 (16TH ED).
1. FOG SIGNAL AT SOUTH BISHOP LIGHT 51-51N 005-25W INOPERATIVE.
2. CANCEL HYDROLANT 910/99(24), VESSEL ASSISTED.

This area · aids-to-navigation notices

1680 within 180 nm since 1997 · 4 in the last 12 months · 4 in force now

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Walney extension wind farm2026-08-04
Fowey light 50-19.60N 004-38.90W unreliable2026-07-27
Fowey light 50-19.6N 004-38.9W unreliable2026-07-27
Fog signal at mumbles head light 51-34.00N 003-58.30W inoperative2024-04-26
Isle of man light 54-03.70N 004-48.00W unlit2024-04-25

Season · when aids-to-navigation notices happen here

month of issue, all years in the archive

Timeline

F/V progressao adrift vicinity 23-22S 026-47W at 032000Z mayreplaced · 1999-05-05
Cancel HYDROLANT 923/99 and this msg, aid restoredcancelled by · 1999-05-06

Nearby now · within 120 nm

Saint ives northwestwardsOther · 88.3 nm
Fowey light 50-19.60N 004-38.90W unreliableNav aids · 95.9 nm
Fowey light 50-19.6N 004-38.9W unreliableNav aids · 95.9 nm

Worldwide now

189 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.