Wrecks

Halfway shoal light 54-01.5N 003-11.8W unlit and RACON inoperative

Irish Sea and St. George's Channel · HYDROLANT 183/05

What this record establishes

Archived notice · 2005-12-08 14:26Z

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) · WZ 187/05 222326Z JAN 05.. Issued 2005-01-23 00:33Z. 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
Irish Sea and St. George's Channel. The parsed report position is 54.025, -3.197. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Related notices and cancellation links

These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.

  1. HYDROLANT 183/05 · this notice2005-01-23 · Archived notice
  2. HYDROLANT 434/052005-03-04 · Archived notice
Compare all 2 notices, changes and original texts →

Current notices and reporting history in the Irish Sea and St. George's Channel →

issued
2005-01-23 00:33Z
status
Archived notice
authority
WZ 187/05 222326Z JAN 05.
issued by
WZ
sea
Irish Sea and St. George's Channel
position
54.025, -3.197
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

CHART 36120 (9TH ED).
HALFWAY SHOAL LIGHT 54-01.5N 003-11.8W
UNLIT AND RACON INOPERATIVE.

Reading this warning

Chart reference
The number of the nautical chart on which the reported position lies.
Shoal / reported depth
Water shallower than the chart shows — a newly found shoal, a reported depth, or less water than charted.
Position (degrees and minutes)
How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
Unlit / extinguished
A light, buoy or structure that is not showing its charted light.
RACON (radar beacon)
A radar beacon on a buoy, lighthouse or structure that answers a ship's radar with a Morse-code mark on the screen.
Inoperative / unreliable / off air
An aid or radio service is not working as charted or published.

All warning terms →

Collected reports in this area · wrecks & obstructions

109 within 180 nm since 1998 · 0 in the last 12 months · 0 listed in force now

98
00
05
10
15
20
24

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

J
F
M
A
M
J
J
A
S
O
N
D

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

38 wrecks & obstructions listed in force · see all

Record snapshot 2026-10-02 11:38Z; source collection times vary.

Wrecks

Dangerous wrecks, shoals and submerged obstructions. All current wrecks & obstructions →

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.