Halfway shoal light 54-01.5N 003-11.8W unreliable
Irish Sea and St. George's Channel · HYDROLANT 434/05
What this record establishes
Archived notice · 2005-03-09 14:46Z
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 427/05 042135Z MAR 05./. Issued 2005-03-04 23:13Z. 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
- Cancel HYDROLANT 434/05 and this msglater cancellation notice
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.
- HYDROLANT 183/052005-01-23 · Archived notice
- HYDROLANT 434/05 · this notice2005-03-04 · Archived notice
Current notices and reporting history in the Irish Sea and St. George's Channel →
- issued
- 2005-03-04 23:13Z
- status
- Archived notice
- authority
- WZ 427/05 042135Z MAR 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 UNRELIABLE.
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.
- Inoperative / unreliable / off air
- An aid or radio service is not working as charted or published.
Collected reports in this area · wrecks & obstructions
109 within 180 nm since 1998 · 0 in the last 12 months · 0 listed in force now
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.
- Dangerous wreck in 54-12.68N 004-16.44W2024-05-02
- Dangerous wreck in 54-12.68N 004-16.44W2024-03-21
- Dangerous wreck in 54-12.68N 004-16.44W2024-03-21
- Dangerous wreck in 54-12.70N 004-16.40W2024-02-08
- Sheringham shoal wind farm turbines unlit in: a. 53-10.40N 001-04.80E2023-03-02
- Dangerous wreck, least depth 19.3 meters, in 56-38.80N 002-26.20W2022-06-10
Month of issue in the collected archive
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 2026-10-04 00:02Z; 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.