Nav aids

Wolf rock light 49-57N 005-49W unreliable 311100Z jul to 020400Z aug

HYDROLANT 2140/01

issued: 2001-07-31 14:06Z
status: cancelled 2001-08-02 05:00Z (archive)
self-cancels: 2001-08-02 05:00Z
cancels: HYDROLANT 2061/01
authority: WZ 1626/01 310604Z JUL 01; WZ 1628/01 311148Z JUL 01
sea: Celtic Sea
position: 49.950, -5.817
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

CHART 36181 (18TH ED).
1. WOLF ROCK LIGHT 49-57N 005-49W UNRELIABLE
   311100Z JUL TO 020400Z AUG.
2. CANCEL HYDROLANT 2061/01(37), OPERATIONS COMPLETED.
3. CANCEL THIS MSG 020500Z AUG.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
2001-07-31 11:00Z	2001-08-02 04:00Z	—	41 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

This area · aids-to-navigation notices

1350 within 180 nm since 1997 · 1 in the last 12 months · 1 in force now

Fowey light 50-19.60N 004-38.90W unreliable2026-07-27
Ile vierge light 48-38.30N 004-34.10W unlit2024-05-03
Fog signal at mumbles head light 51-34.00N 003-58.30W inoperative2024-04-26
Ile vierge light 48-38.32N 004-34.04W range reduced2024-04-23
Bishop rock light 49-52.40N 006-26.70W unreliable2024-04-11
RACON at bridge buoy 50-39.60N 001-36.90W inoperative2024-04-09

Season · when aids-to-navigation notices happen here

month of issue, all years in the archive

Timeline

Underwater operations in progress until further notice by M/V sea otter and M/V top cat vicinity of 50-31N…cancels · 2001-07-23
Underwater operations in progress until further notice by M/V sea otter and M/V top cat vicinity of 50-31N…replaced · 2001-07-23

Nearby now · within 120 nm

Fowey light 50-19.60N 004-38.90W unreliableNav aids · 50.3 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.